<PAGE> 1
As filed with the Securities and Exchange Commission on June 18, 1997
Registration Nos. 2-95973 and 811-4236
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
FORM N-lA
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 [X]
POST-EFFECTIVE AMENDMENT NO. 42 [X]
and
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT [X]
OF 1940
AMENDMENT NO. 43 [X]
THE ONE GROUP(R)
(Exact Name of Registrant as Specified in Charter)
1111 POLARIS PARKWAY
P.O. BOX 710211
COLUMBUS, OHIO 43271-0211
(Address of Principal Executive Offices)
(800) 480-4111
(Registrant's Telephone Number)
GEORGE MARTINEZ
3435 STELZER ROAD
COLUMBUS, OHIO 43219
(Name and Address of Agent for Service)
Copies To:
Alan G. Priest, Esquire Michael V. Wible, Esquire
Ropes & Gray Banc One Corporation
One Franklin Square 100 East Broad Street, 18th Fl.
1301 K Street, N.W., Suite 800E Columbus, Ohio 43271
Washington, D.C. 20005
It is proposed that this filing will become effective (check appropriate box)
X Immediately upon filing pursuant to paragraph(b)
---
on (date) pursuant to paragraph(b)
---
60 days after filing pursuant to paragraph(a)(1)
---
on (DATE) pursuant to paragraph (a)(1)
---
75 days after filing pursuant to paragraph (a)(2)
---
--- on (DATE) pursuant to paragraph (a)(2)
of Rule 485.
The Registrant has registered an indefinite number or amount of securities under
the Securities Act of 1933 pursuant to Section (a) (1) of Rule 24f-2. Rule 24f-2
Notice for the Registrant's fiscal year ending June 30, 1996 was filed on August
28, 1996.
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<NET-CHANGE-IN-ASSETS> (6898)
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<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 127
<OVERDIST-NET-GAINS-PRIOR> 4
<GROSS-ADVISORY-FEES> 915
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1552
<AVERAGE-NET-ASSETS> 41219<F1>
<PER-SHARE-NAV-BEGIN> 1.00<F1>
<PER-SHARE-NII> .015<F1>
<PER-SHARE-GAIN-APPREC> 0<F1>
<PER-SHARE-DIVIDEND> .015<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 1.00<F1>
<EXPENSE-RATIO> .68<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 041
<NAME> THE ONE GROUP INCOME EQUITY FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 293385
<INVESTMENTS-AT-VALUE> 419357
<RECEIVABLES> 1636
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<TOTAL-ASSETS> 421096
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<OTHER-ITEMS-LIABILITIES> 1162
<TOTAL-LIABILITIES> 1162
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<PAID-IN-CAPITAL-COMMON> 283496
<SHARES-COMMON-STOCK> 17505<F1>
<SHARES-COMMON-PRIOR> 18230<F1>
<ACCUMULATED-NII-CURRENT> 0
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<ACCUMULATED-NET-GAINS> 10469
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 125972
<NET-ASSETS> 419934
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<OTHER-INCOME> 26
<EXPENSES-NET> 2223
<NET-INVESTMENT-INCOME> 4083
<REALIZED-GAINS-CURRENT> 17707
<APPREC-INCREASE-CURRENT> 9362
<NET-CHANGE-FROM-OPS> 31152
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 3413<F1>
<DISTRIBUTIONS-OF-GAINS> 10511<F1>
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<NUMBER-OF-SHARES-SOLD> 980<F1>
<NUMBER-OF-SHARES-REDEEMED> 2104<F1>
<SHARES-REINVESTED> 399<F1>
<NET-CHANGE-IN-ASSETS> 24654
<ACCUMULATED-NII-PRIOR> 13
<ACCUMULATED-GAINS-PRIOR> 6440
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<GROSS-ADVISORY-FEES> 1501
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2248
<AVERAGE-NET-ASSETS> 316941<F1>
<PER-SHARE-NAV-BEGIN> 17.650<F1>
<PER-SHARE-NII> .190<F1>
<PER-SHARE-GAIN-APPREC> 1.200<F1>
<PER-SHARE-DIVIDEND> .190<F1>
<PER-SHARE-DISTRIBUTIONS> .610<F1>
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<PER-SHARE-NAV-END> 18.240<F1>
<EXPENSE-RATIO> .970<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 042
<NAME> THE ONE GROUP INCOME EQUITY FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 293385
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<PAID-IN-CAPITAL-COMMON> 283496
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<SHARES-COMMON-PRIOR> 2510<F1>
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<NET-INVESTMENT-INCOME> 4083
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<APPREC-INCREASE-CURRENT> 9362
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<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 468<F1>
<DISTRIBUTIONS-OF-GAINS> 1743<F1>
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<NUMBER-OF-SHARES-SOLD> 820<F1>
<NUMBER-OF-SHARES-REDEEMED> 435<F1>
<SHARES-REINVESTED> 117<F1>
<NET-CHANGE-IN-ASSETS> 24654
<ACCUMULATED-NII-PRIOR> 13
<ACCUMULATED-GAINS-PRIOR> 6440
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<OVERDIST-NET-GAINS-PRIOR> 0
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2248
<AVERAGE-NET-ASSETS> 48623<F1>
<PER-SHARE-NAV-BEGIN> 17.640<F1>
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<PER-SHARE-GAIN-APPREC> 1.200<F1>
<PER-SHARE-DIVIDEND> .170<F1>
<PER-SHARE-DISTRIBUTIONS> .610<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 18.230<F1>
<EXPENSE-RATIO> 1.23<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 043
<NAME> THE ONE GROUP INCOME EQUITY FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 293385
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<SHARES-COMMON-STOCK> 2506<F1>
<SHARES-COMMON-PRIOR> 1650<F1>
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<OVERDISTRIBUTION-NII> 3
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<NET-INVESTMENT-INCOME> 4083
<REALIZED-GAINS-CURRENT> 17707
<APPREC-INCREASE-CURRENT> 9362
<NET-CHANGE-FROM-OPS> 31152
<EQUALIZATION> 0
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<NUMBER-OF-SHARES-REDEEMED> 108<F1>
<SHARES-REINVESTED> 89<F1>
<NET-CHANGE-IN-ASSETS> 24654
<ACCUMULATED-NII-PRIOR> 13
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2248
<AVERAGE-NET-ASSETS> 36816<F1>
<PER-SHARE-NAV-BEGIN> 17.680<F1>
<PER-SHARE-NII> .100<F1>
<PER-SHARE-GAIN-APPREC> 1.190<F1>
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<PER-SHARE-DISTRIBUTIONS> .610<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 18.260<F1>
<EXPENSE-RATIO> 1.98<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 051
<NAME> THE ONE GROUP INCOME BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 581509
<INVESTMENTS-AT-VALUE> 600942
<RECEIVABLES> 10809
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<PAID-IN-CAPITAL-COMMON> 638796
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<ACCUMULATED-NII-CURRENT> 396
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<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 52261
<ACCUM-APPREC-OR-DEPREC> 19433
<NET-ASSETS> 606364
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<NUMBER-OF-SHARES-REDEEMED> 6380<F1>
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<OVERDIST-NET-GAINS-PRIOR> 54533
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<GROSS-EXPENSE> 2333
<AVERAGE-NET-ASSETS> 553193<F1>
<PER-SHARE-NAV-BEGIN> 9.33<F1>
<PER-SHARE-NII> .320<F1>
<PER-SHARE-GAIN-APPREC> .130<F1>
<PER-SHARE-DIVIDEND> .320<F1>
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<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.46<F1>
<EXPENSE-RATIO> .590<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 052
<NAME> THE ONE GROUP INCOME BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 581509
<INVESTMENTS-AT-VALUE> 600942
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<OVERDISTRIBUTION-NII> 0
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<OVERDISTRIBUTION-GAINS> 52261
<ACCUM-APPREC-OR-DEPREC> 19433
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<APPREC-INCREASE-CURRENT> 6103
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<NUMBER-OF-SHARES-REDEEMED> 167<F1>
<SHARES-REINVESTED> 32<F1>
<NET-CHANGE-IN-ASSETS> 69888
<ACCUMULATED-NII-PRIOR> 396
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<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 54533
<GROSS-ADVISORY-FEES> 1732
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2333
<AVERAGE-NET-ASSETS> 11667<F1>
<PER-SHARE-NAV-BEGIN> 9.32<F1>
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<PER-SHARE-DIVIDEND> .310<F1>
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<PER-SHARE-NAV-END> 9.45<F1>
<EXPENSE-RATIO> .840<F1>
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<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 053
<NAME> THE ONE GROUP INCOME BOND FUND
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<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<INVESTMENTS-AT-COST> 581509
<INVESTMENTS-AT-VALUE> 600942
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<ACCUM-APPREC-OR-DEPREC> 19433
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<NET-INVESTMENT-INCOME> 19522
<REALIZED-GAINS-CURRENT> 2272
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<SHARES-REINVESTED> 15<F1>
<NET-CHANGE-IN-ASSETS> 69888
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<GROSS-EXPENSE> 2333
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<EXPENSE-RATIO> 1.49<F1>
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<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 061
<NAME> THE ONE GROUP INTERMEDIATE TAX-FREE BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
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<PER-SHARE-DISTRIBUTIONS> .020<F1>
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<EXPENSE-RATIO> .560<F1>
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<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 062
<NAME> THE ONE GROUP INTERMEDIATE TAX-FREE BOND FUND
<MULTIPLIER> 1,000
<S> <C>
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<NET-INVESTMENT-INCOME> 5915
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<PER-SHARE-NII> .250<F1>
<PER-SHARE-GAIN-APPREC> .230<F1>
<PER-SHARE-DIVIDEND> .250<F1>
<PER-SHARE-DISTRIBUTIONS> .020<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 10.880<F1>
<EXPENSE-RATIO> .790<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 063
<NAME> THE ONE GROUP INTERMEDIATE TAX-FREE BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 257214
<INVESTMENTS-AT-VALUE> 264507
<RECEIVABLES> 7780
<ASSETS-OTHER> 2
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 272289
<PAYABLE-FOR-SECURITIES> 16635
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1592
<TOTAL-LIABILITIES> 18227
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 245804
<SHARES-COMMON-STOCK> 250<F1>
<SHARES-COMMON-PRIOR> 228<F1>
<ACCUMULATED-NII-CURRENT> 233
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 732
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 7293
<NET-ASSETS> 254062
<DIVIDEND-INCOME> 42
<INTEREST-INCOME> 6572
<OTHER-INCOME> 0
<EXPENSES-NET> 699
<NET-INVESTMENT-INCOME> 5915
<REALIZED-GAINS-CURRENT> 751
<APPREC-INCREASE-CURRENT> 4467
<NET-CHANGE-FROM-OPS> 11133
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 46<F1>
<DISTRIBUTIONS-OF-GAINS> 4<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 74<F1>
<NUMBER-OF-SHARES-REDEEMED> 56<F1>
<SHARES-REINVESTED> 4<F1>
<NET-CHANGE-IN-ASSETS> 27800
<ACCUMULATED-NII-PRIOR> 233
<ACCUMULATED-GAINS-PRIOR> 410
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 735
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1033
<AVERAGE-NET-ASSETS> 2278<F1>
<PER-SHARE-NAV-BEGIN> 10.680<F1>
<PER-SHARE-NII> .220<F1>
<PER-SHARE-GAIN-APPREC> .230<F1>
<PER-SHARE-DIVIDEND> .220<F1>
<PER-SHARE-DISTRIBUTIONS> .020<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 10.890<F1>
<EXPENSE-RATIO> 1.480<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 071
<NAME> THE ONE GROUP DISCIPLINED VALUE FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 463484
<INVESTMENTS-AT-VALUE> 532651
<RECEIVABLES> 2234
<ASSETS-OTHER> 3
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 534888
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2126
<TOTAL-LIABILITIES> 2126
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 455974
<SHARES-COMMON-STOCK> 34731<F1>
<SHARES-COMMON-PRIOR> 35564<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 47
<ACCUMULATED-NET-GAINS> 7668
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 69167
<NET-ASSETS> 532762
<DIVIDEND-INCOME> 7279
<INTEREST-INCOME> 159
<OTHER-INCOME> 67
<EXPENSES-NET> 2764
<NET-INVESTMENT-INCOME> 4741
<REALIZED-GAINS-CURRENT> 23995
<APPREC-INCREASE-CURRENT> 15176
<NET-CHANGE-FROM-OPS> 43912
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 4513<F1>
<DISTRIBUTIONS-OF-GAINS> 53221<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 3666<F1>
<NUMBER-OF-SHARES-REDEEMED> 6474<F1>
<SHARES-REINVESTED> 1975<F1>
<NET-CHANGE-IN-ASSETS> (26855)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 41035
<OVERDISTRIB-NII-PRIOR> 45
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2006
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2775
<AVERAGE-NET-ASSETS> 499602<F1>
<PER-SHARE-NAV-BEGIN> 14.690<F1>
<PER-SHARE-NII> .130<F1>
<PER-SHARE-GAIN-APPREC> 1.090<F1>
<PER-SHARE-DIVIDEND> .130<F1>
<PER-SHARE-DISTRIBUTIONS> 1.610<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 14.170<F1>
<EXPENSE-RATIO> .980<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 072
<NAME> THE ONE GROUP DISCIPLINED VALUE FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 463484
<INVESTMENTS-AT-VALUE> 532651
<RECEIVABLES> 2234
<ASSETS-OTHER> 3
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 534888
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2126
<TOTAL-LIABILITIES> 2126
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 455974
<SHARES-COMMON-STOCK> 1569<F1>
<SHARES-COMMON-PRIOR> 1416<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 47
<ACCUMULATED-NET-GAINS> 7668
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 69167
<NET-ASSETS> 532762
<DIVIDEND-INCOME> 7279
<INTEREST-INCOME> 159
<OTHER-INCOME> 67
<EXPENSES-NET> 2764
<NET-INVESTMENT-INCOME> 4741
<REALIZED-GAINS-CURRENT> 23995
<APPREC-INCREASE-CURRENT> 15176
<NET-CHANGE-FROM-OPS> 43912
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 164<F1>
<DISTRIBUTIONS-OF-GAINS> 2286<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 354<F1>
<NUMBER-OF-SHARES-REDEEMED> 371<F1>
<SHARES-REINVESTED> 170<F1>
<NET-CHANGE-IN-ASSETS> (26855)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 41035
<OVERDISTRIB-NII-PRIOR> 45
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2006
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2775
<AVERAGE-NET-ASSETS> 21132<F1>
<PER-SHARE-NAV-BEGIN> 14.720<F1>
<PER-SHARE-NII> .110<F1>
<PER-SHARE-GAIN-APPREC> 1.080<F1>
<PER-SHARE-DIVIDEND> .110<F1>
<PER-SHARE-DISTRIBUTIONS> 1.610<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 14.190<F1>
<EXPENSE-RATIO> 1.23<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 073
<NAME> THE ONE GROUP DISCIPLINED VALUE FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 463484
<INVESTMENTS-AT-VALUE> 532651
<RECEIVABLES> 2234
<ASSETS-OTHER> 3
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 534888
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<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2126
<TOTAL-LIABILITIES> 2126
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 455974
<SHARES-COMMON-STOCK> 1290<F1>
<SHARES-COMMON-PRIOR> 1110<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 47
<ACCUMULATED-NET-GAINS> 4668
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 69167
<NET-ASSETS> 532762
<DIVIDEND-INCOME> 7279
<INTEREST-INCOME> 159
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<EXPENSES-NET> 2764
<NET-INVESTMENT-INCOME> 4741
<REALIZED-GAINS-CURRENT> 23995
<APPREC-INCREASE-CURRENT> 15176
<NET-CHANGE-FROM-OPS> 43912
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 66<F1>
<DISTRIBUTIONS-OF-GAINS> 1855<F1>
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<NUMBER-OF-SHARES-SOLD> 121<F1>
<NUMBER-OF-SHARES-REDEEMED> 76<F1>
<SHARES-REINVESTED> 135<F1>
<NET-CHANGE-IN-ASSETS> (26855)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 41035
<OVERDISTRIB-NII-PRIOR> 45
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2006
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2775
<AVERAGE-NET-ASSETS> 16888<F1>
<PER-SHARE-NAV-BEGIN> 14.690<F1>
<PER-SHARE-NII> .060<F1>
<PER-SHARE-GAIN-APPREC> 1.080<F1>
<PER-SHARE-DIVIDEND> .060<F1>
<PER-SHARE-DISTRIBUTIONS> 1.610<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 14.160<F1>
<EXPENSE-RATIO> 1.980<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 081
<NAME> THE ONE GROUP GROWTH OPPORTUNITIES FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 550336
<INVESTMENTS-AT-VALUE> 589569
<RECEIVABLES> 17617
<ASSETS-OTHER> 51
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 607237
<PAYABLE-FOR-SECURITIES> 19983
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1456
<TOTAL-LIABILITIES> 21439
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 555028
<SHARES-COMMON-STOCK> 31493<F1>
<SHARES-COMMON-PRIOR> 28310<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 138
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 8325
<ACCUM-APPREC-OR-DEPREC> 39233
<NET-ASSETS> 585798
<DIVIDEND-INCOME> 10228
<INTEREST-INCOME> 818
<OTHER-INCOME> 206
<EXPENSES-NET> 2991
<NET-INVESTMENT-INCOME> 8261
<REALIZED-GAINS-CURRENT> 2253
<APPREC-INCREASE-CURRENT> 31069
<NET-CHANGE-FROM-OPS> 41583
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 7722<F1>
<DISTRIBUTIONS-OF-GAINS> 83581<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 7557<F1>
<NUMBER-OF-SHARES-REDEEMED> 7164<F1>
<SHARES-REINVESTED> 2790<F1>
<NET-CHANGE-IN-ASSETS> 12311
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 80677
<OVERDISTRIB-NII-PRIOR> 47
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2187
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3005
<AVERAGE-NET-ASSETS> 540901<F1>
<PER-SHARE-NAV-BEGIN> 18.810<F1>
<PER-SHARE-NII> .270<F1>
<PER-SHARE-GAIN-APPREC> 1.050<F1>
<PER-SHARE-DIVIDEND> .270<F1>
<PER-SHARE-DISTRIBUTIONS> 2.920<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 16.940<F1>
<EXPENSE-RATIO> .970<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 082
<NAME> THE ONE GROUP GROWTH OPPORTUNITIES FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 550336
<INVESTMENTS-AT-VALUE> 589569
<RECEIVABLES> 17617
<ASSETS-OTHER> 51
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 607237
<PAYABLE-FOR-SECURITIES> 19983
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1456
<TOTAL-LIABILITIES> 21439
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 555028
<SHARES-COMMON-STOCK> 1823<F1>
<SHARES-COMMON-PRIOR> 1495<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 138
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 8325
<ACCUM-APPREC-OR-DEPREC> 39233
<NET-ASSETS> 585798
<DIVIDEND-INCOME> 10228
<INTEREST-INCOME> 818
<OTHER-INCOME> 206
<EXPENSES-NET> 2991
<NET-INVESTMENT-INCOME> 8261
<REALIZED-GAINS-CURRENT> 2253
<APPREC-INCREASE-CURRENT> 31069
<NET-CHANGE-FROM-OPS> 41583
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 395<F1>
<DISTRIBUTIONS-OF-GAINS> 4572<F1>
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<NUMBER-OF-SHARES-SOLD> 2268<F1>
<NUMBER-OF-SHARES-REDEEMED> 2233<F1>
<SHARES-REINVESTED> 293<F1>
<NET-CHANGE-IN-ASSETS> 12311
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 80677
<OVERDISTRIB-NII-PRIOR> 47
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2187
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3005
<AVERAGE-NET-ASSETS> 28538<F1>
<PER-SHARE-NAV-BEGIN> 18.760<F1>
<PER-SHARE-NII> .240<F1>
<PER-SHARE-GAIN-APPREC> 1.050<F1>
<PER-SHARE-DIVIDEND> .260<F1>
<PER-SHARE-DISTRIBUTIONS> 2.920<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 16.870<F1>
<EXPENSE-RATIO> 1.22<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 083
<NAME> THE ONE GROUP GROWTH OPPORTUNITIES FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 550336
<INVESTMENTS-AT-VALUE> 589569
<RECEIVABLES> 17617
<ASSETS-OTHER> 51
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 607237
<PAYABLE-FOR-SECURITIES> 19983
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1456
<TOTAL-LIABILITIES> 21439
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 555028
<SHARES-COMMON-STOCK> 1306<F1>
<SHARES-COMMON-PRIOR> 701<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 138
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 8325
<ACCUM-APPREC-OR-DEPREC> 39233
<NET-ASSETS> 585798
<DIVIDEND-INCOME> 10228
<INTEREST-INCOME> 818
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<EXPENSES-NET> 2991
<NET-INVESTMENT-INCOME> 8261
<REALIZED-GAINS-CURRENT> 2253
<APPREC-INCREASE-CURRENT> 31069
<NET-CHANGE-FROM-OPS> 41583
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 235<F1>
<DISTRIBUTIONS-OF-GAINS> 3102<F1>
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<NUMBER-OF-SHARES-SOLD> 454<F1>
<NUMBER-OF-SHARES-REDEEMED> 49<F1>
<SHARES-REINVESTED> 200<F1>
<NET-CHANGE-IN-ASSETS> 12311
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 80677
<OVERDISTRIB-NII-PRIOR> 47
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2187
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3005
<AVERAGE-NET-ASSETS> 16778<F1>
<PER-SHARE-NAV-BEGIN> 18.430<F1>
<PER-SHARE-NII> .170<F1>
<PER-SHARE-GAIN-APPREC> 1.030<F1>
<PER-SHARE-DIVIDEND> .240<F1>
<PER-SHARE-DISTRIBUTIONS> 2.920<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 16.470<F1>
<EXPENSE-RATIO> 1.98<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 101
<NAME> THE ONE GROUP LIMITED VOLATILITY BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 606745
<INVESTMENTS-AT-VALUE> 609450
<RECEIVABLES> 10522
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<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4773
<TOTAL-LIABILITIES> 4773
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 619682
<SHARES-COMMON-STOCK> 56206<F1>
<SHARES-COMMON-PRIOR> 58043<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 121
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 7011
<ACCUM-APPREC-OR-DEPREC> 2705
<NET-ASSETS> 615255
<DIVIDEND-INCOME> 32
<INTEREST-INCOME> 20168
<OTHER-INCOME> 90
<EXPENSES-NET> 1634
<NET-INVESTMENT-INCOME> 18656
<REALIZED-GAINS-CURRENT> (186)
<APPREC-INCREASE-CURRENT> 3760
<NET-CHANGE-FROM-OPS> 22230
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 17909<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 6184<F1>
<NUMBER-OF-SHARES-REDEEMED> 8169<F1>
<SHARES-REINVESTED> 148<F1>
<NET-CHANGE-IN-ASSETS> (15927)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 121
<OVERDIST-NET-GAINS-PRIOR> 6825
<GROSS-ADVISORY-FEES> 1876
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2585
<AVERAGE-NET-ASSETS> 593836<F1>
<PER-SHARE-NAV-BEGIN> 10.42<F1>
<PER-SHARE-NII> .320<F1>
<PER-SHARE-GAIN-APPREC> .06<F1>
<PER-SHARE-DIVIDEND> .320<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 10.48<F1>
<EXPENSE-RATIO> .510<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 102
<NAME> THE ONE GROUP LIMITED VOLATILITY BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 606745
<INVESTMENTS-AT-VALUE> 609450
<RECEIVABLES> 10522
<ASSETS-OTHER> 56
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 620028
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4773
<TOTAL-LIABILITIES> 4773
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 619682
<SHARES-COMMON-STOCK> 2001<F1>
<SHARES-COMMON-PRIOR> 2050<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 121
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 7011
<ACCUM-APPREC-OR-DEPREC> 2705
<NET-ASSETS> 615255
<DIVIDEND-INCOME> 32
<INTEREST-INCOME> 20168
<OTHER-INCOME> 90
<EXPENSES-NET> 1634
<NET-INVESTMENT-INCOME> 18656
<REALIZED-GAINS-CURRENT> (186)
<APPREC-INCREASE-CURRENT> 3760
<NET-CHANGE-FROM-OPS> 22230
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 618<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 273<F1>
<NUMBER-OF-SHARES-REDEEMED> 366<F1>
<SHARES-REINVESTED> 44<F1>
<NET-CHANGE-IN-ASSETS> (15927)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 121
<OVERDIST-NET-GAINS-PRIOR> 6825
<GROSS-ADVISORY-FEES> 1876
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2585
<AVERAGE-NET-ASSETS> 21371<F1>
<PER-SHARE-NAV-BEGIN> 10.41<F1>
<PER-SHARE-NII> .300<F1>
<PER-SHARE-GAIN-APPREC> .07<F1>
<PER-SHARE-DIVIDEND> .300<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 10.48<F1>
<EXPENSE-RATIO> .760<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 103
<NAME> THE ONE GROUP LIMITED VOLATILITY BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 606745
<INVESTMENTS-AT-VALUE> 609450
<RECEIVABLES> 10522
<ASSETS-OTHER> 56
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 620028
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 4773
<TOTAL-LIABILITIES> 4773
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 619682
<SHARES-COMMON-STOCK> 480<F1>
<SHARES-COMMON-PRIOR> 469<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 121
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 7011
<ACCUM-APPREC-OR-DEPREC> 2705
<NET-ASSETS> 615255
<DIVIDEND-INCOME> 32
<INTEREST-INCOME> 20168
<OTHER-INCOME> 90
<EXPENSES-NET> 1634
<NET-INVESTMENT-INCOME> 18656
<REALIZED-GAINS-CURRENT> (186)
<APPREC-INCREASE-CURRENT> 3760
<NET-CHANGE-FROM-OPS> 22230
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 129<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 48<F1>
<NUMBER-OF-SHARES-REDEEMED> 48<F1>
<SHARES-REINVESTED> 11<F1>
<NET-CHANGE-IN-ASSETS> (15927)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 121
<OVERDIST-NET-GAINS-PRIOR> 6825
<GROSS-ADVISORY-FEES> 1876
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2585
<AVERAGE-NET-ASSETS> 5037<F1>
<PER-SHARE-NAV-BEGIN> 10.49<F1>
<PER-SHARE-NII> .270<F1>
<PER-SHARE-GAIN-APPREC> .06<F1>
<PER-SHARE-DIVIDEND> .270<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 10.55<F1>
<EXPENSE-RATIO> 1.41<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 111
<NAME> THE ONE GROUP EQUITY INDEX FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 405033
<INVESTMENTS-AT-VALUE> 536303
<RECEIVABLES> 1566
<ASSETS-OTHER> 65
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 537934
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1731
<TOTAL-LIABILITIES> 1731
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 404537
<SHARES-COMMON-STOCK> 21851<F1>
<SHARES-COMMON-PRIOR> 19269<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 394
<ACCUMULATED-NET-GAINS> 1332
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 130728
<NET-ASSETS> 536203
<DIVIDEND-INCOME> 4818
<INTEREST-INCOME> 585
<OTHER-INCOME> 38
<EXPENSES-NET> 1003
<NET-INVESTMENT-INCOME> 4438
<REALIZED-GAINS-CURRENT> 3219
<APPREC-INCREASE-CURRENT> 44523
<NET-CHANGE-FROM-OPS> 52180
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 3682<F1>
<DISTRIBUTIONS-OF-GAINS> 3288<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 5987<F1>
<NUMBER-OF-SHARES-REDEEMED> 3596<F1>
<SHARES-REINVESTED> 191<F1>
<NET-CHANGE-IN-ASSETS> 144421
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 2450
<OVERDISTRIB-NII-PRIOR> 405
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 696
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1647
<AVERAGE-NET-ASSETS> 359058<F1>
<PER-SHARE-NAV-BEGIN> 16.660<F1>
<PER-SHARE-NII> .180<F1>
<PER-SHARE-GAIN-APPREC> 1.740<F1>
<PER-SHARE-DIVIDEND> .180<F1>
<PER-SHARE-DISTRIBUTIONS> .150<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 18.250<F1>
<EXPENSE-RATIO> .280<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 112
<NAME> THE ONE GROUP EQUITY INDEX FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 405033
<INVESTMENTS-AT-VALUE> 536303
<RECEIVABLES> 1566
<ASSETS-OTHER> 65
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 537934
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1731
<TOTAL-LIABILITIES> 1731
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 404537
<SHARES-COMMON-STOCK> 2969<F1>
<SHARES-COMMON-PRIOR> 1931<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 394
<ACCUMULATED-NET-GAINS> 1332
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 130728
<NET-ASSETS> 536203
<DIVIDEND-INCOME> 4818
<INTEREST-INCOME> 585
<OTHER-INCOME> 38
<EXPENSES-NET> 1003
<NET-INVESTMENT-INCOME> 4438
<REALIZED-GAINS-CURRENT> 3219
<APPREC-INCREASE-CURRENT> 44523
<NET-CHANGE-FROM-OPS> 52180
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 391<F1>
<DISTRIBUTIONS-OF-GAINS> 420<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 2173<F1>
<NUMBER-OF-SHARES-REDEEMED> 1177<F1>
<SHARES-REINVESTED> 42<F1>
<NET-CHANGE-IN-ASSETS> 144421
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 2450
<OVERDISTRIB-NII-PRIOR> 405
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 696
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1647
<AVERAGE-NET-ASSETS> 42687<F1>
<PER-SHARE-NAV-BEGIN> 16.670<F1>
<PER-SHARE-NII> .150<F1>
<PER-SHARE-GAIN-APPREC> 1.730<F1>
<PER-SHARE-DIVIDEND> .150<F1>
<PER-SHARE-DISTRIBUTIONS> .150<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 18.250<F1>
<EXPENSE-RATIO> .530<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 113
<NAME> THE ONE GROUP EQUITY INDEX FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 405033
<INVESTMENTS-AT-VALUE> 536303
<RECEIVABLES> 1566
<ASSETS-OTHER> 65
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 537934
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1731
<TOTAL-LIABILITIES> 1731
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 404537
<SHARES-COMMON-STOCK> 4563<F1>
<SHARES-COMMON-PRIOR> 2310<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 394
<ACCUMULATED-NET-GAINS> 1332
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 130728
<NET-ASSETS> 536203
<DIVIDEND-INCOME> 4818
<INTEREST-INCOME> 585
<OTHER-INCOME> 38
<EXPENSES-NET> 1003
<NET-INVESTMENT-INCOME> 4438
<REALIZED-GAINS-CURRENT> 3219
<APPREC-INCREASE-CURRENT> 44523
<NET-CHANGE-FROM-OPS> 52180
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 354<F1>
<DISTRIBUTIONS-OF-GAINS> 629<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 2315<F1>
<NUMBER-OF-SHARES-REDEEMED> 114<F1>
<SHARES-REINVESTED> 52<F1>
<NET-CHANGE-IN-ASSETS> 144421
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 2450
<OVERDISTRIB-NII-PRIOR> 405
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 696
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1647
<AVERAGE-NET-ASSETS> 58353<F1>
<PER-SHARE-NAV-BEGIN> 16.680<F1>
<PER-SHARE-NII> .090<F1>
<PER-SHARE-GAIN-APPREC> 1.740<F1>
<PER-SHARE-DIVIDEND> .100<F1>
<PER-SHARE-DISTRIBUTIONS> .150<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 18.260<F1>
<EXPENSE-RATIO> 1.280<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 121
<NAME> THE ONE GROUP LARGE COMPANY VALUE FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 570741
<INVESTMENTS-AT-VALUE> 627221
<RECEIVABLES> 3047
<ASSETS-OTHER> 38
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 630306
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2375
<TOTAL-LIABILITIES> 2375
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 577653
<SHARES-COMMON-STOCK> 47037<F1>
<SHARES-COMMON-PRIOR> 45543<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 91
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 6111
<ACCUM-APPREC-OR-DEPREC> 56480
<NET-ASSETS> 627931
<DIVIDEND-INCOME> 8412
<INTEREST-INCOME> 616
<OTHER-INCOME> 110
<EXPENSES-NET> 2942
<NET-INVESTMENT-INCOME> 6196
<REALIZED-GAINS-CURRENT> (4647)
<APPREC-INCREASE-CURRENT> 60686
<NET-CHANGE-FROM-OPS> 62235
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 6044<F1>
<DISTRIBUTIONS-OF-GAINS> 47388<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 7277<F1>
<NUMBER-OF-SHARES-REDEEMED> 7698<F1>
<SHARES-REINVESTED> 1915<F1>
<NET-CHANGE-IN-ASSETS> 29889
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 47238
<OVERDISTRIB-NII-PRIOR> 114
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2243
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2947
<AVERAGE-NET-ASSETS> 585802<F1>
<PER-SHARE-NAV-BEGIN> 12.830<F1>
<PER-SHARE-NII> .130<F1>
<PER-SHARE-GAIN-APPREC> 1.210<F1>
<PER-SHARE-DIVIDEND> .130<F1>
<PER-SHARE-DISTRIBUTIONS> 1.060<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 12.980<F1>
<EXPENSE-RATIO> .960<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 122
<NAME> THE ONE GROUP LARGE COMPANY VALUE FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 570741
<INVESTMENTS-AT-VALUE> 627221
<RECEIVABLES> 3047
<ASSETS-OTHER> 38
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 630306
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2375
<TOTAL-LIABILITIES> 2375
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 577653
<SHARES-COMMON-STOCK> 916<F1>
<SHARES-COMMON-PRIOR> 729<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 91
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 6111
<ACCUM-APPREC-OR-DEPREC> 56480
<NET-ASSETS> 627931
<DIVIDEND-INCOME> 8412
<INTEREST-INCOME> 616
<OTHER-INCOME> 110
<EXPENSES-NET> 2942
<NET-INVESTMENT-INCOME> 6196
<REALIZED-GAINS-CURRENT> (4647)
<APPREC-INCREASE-CURRENT> 60686
<NET-CHANGE-FROM-OPS> 62235
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 99<F1>
<DISTRIBUTIONS-OF-GAINS> 904<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 525<F1>
<NUMBER-OF-SHARES-REDEEMED> 414<F1>
<SHARES-REINVESTED> 76<F1>
<NET-CHANGE-IN-ASSETS> 29889
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 47238
<OVERDISTRIB-NII-PRIOR> 114
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2243
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2947
<AVERAGE-NET-ASSETS> 10676<F1>
<PER-SHARE-NAV-BEGIN> 12.870<F1>
<PER-SHARE-NII> .110<F1>
<PER-SHARE-GAIN-APPREC> 1.220<F1>
<PER-SHARE-DIVIDEND> .120<F1>
<PER-SHARE-DISTRIBUTIONS> 1.060<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 13.020<F1>
<EXPENSE-RATIO> 1.210<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 123
<NAME> THE ONE GROUP LARGE COMPANY VALUE FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 570741
<INVESTMENTS-AT-VALUE> 627221
<RECEIVABLES> 3047
<ASSETS-OTHER> 38
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 630306
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2375
<TOTAL-LIABILITIES> 2375
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 577653
<SHARES-COMMON-STOCK> 425<F1>
<SHARES-COMMON-PRIOR> 318<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 91
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 6111
<ACCUM-APPREC-OR-DEPREC> 56480
<NET-ASSETS> 627931
<DIVIDEND-INCOME> 8412
<INTEREST-INCOME> 616
<OTHER-INCOME> 110
<EXPENSES-NET> 2942
<NET-INVESTMENT-INCOME> 6196
<REALIZED-GAINS-CURRENT> (4647)
<APPREC-INCREASE-CURRENT> 60686
<NET-CHANGE-FROM-OPS> 62235
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 30<F1>
<DISTRIBUTIONS-OF-GAINS> 410<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 97<F1>
<NUMBER-OF-SHARES-REDEEMED> 23<F1>
<SHARES-REINVESTED> 33<F1>
<NET-CHANGE-IN-ASSETS> 29889
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 47238
<OVERDISTRIB-NII-PRIOR> 114
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2243
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2947
<AVERAGE-NET-ASSETS> 4765<F1>
<PER-SHARE-NAV-BEGIN> 12.980<F1>
<PER-SHARE-NII> .070<F1>
<PER-SHARE-GAIN-APPREC> 1.210<F1>
<PER-SHARE-DIVIDEND> .080<F1>
<PER-SHARE-DISTRIBUTIONS> 1.060<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 13.120<F1>
<EXPENSE-RATIO> 1.960<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 131
<NAME> THE ONE GROUP OHIO MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 106236
<INVESTMENTS-AT-VALUE> 112468
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<FN>
<F1>Fiduciary Class
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<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 132
<NAME> THE ONE GROUP OHIO MUNICIPAL BOND FUND
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<S> <C>
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<F1>CLASS A SHARES
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 133
<NAME> THE ONE GROUP OHIO MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
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<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 141
<NAME> THE ONE GROUP INTERNATIONAL EQUITY INDEX FUND
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<S> <C>
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<FISCAL-YEAR-END> JUN-30-1997
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<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 142
<NAME> THE ONE GROUP INTERNATIONAL EQUITY INDEX FUND
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<S> <C>
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<FN>
<F1>CLASS A SHARES
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 143
<NAME> THE ONE GROUP INTERNATIONAL EQUITY INDEX FUND
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<S> <C>
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<F1>CLASS B SHARES
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<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
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<NAME> THE ONE GROUP TREASURY ONLY MONEY MARKET FUND
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<TABLE> <S> <C>
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<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
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<NAME> THE ONE GROUP GOVERNMENT MONEY MARKET FUND
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</TABLE>
<TABLE> <S> <C>
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<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
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<NAME> THE ONE GROUP ASSET ALLOCATION FUND
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<S> <C>
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<PER-SHARE-NAV-BEGIN> 11.710<F1>
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<PER-SHARE-GAIN-APPREC> .660<F1>
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<EXPENSE-RATIO> .800<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 172
<NAME> THE ONE GROUP ASSET ALLOCATION FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<REALIZED-GAINS-CURRENT> 2856
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<NUMBER-OF-SHARES-REDEEMED> 176<F1>
<SHARES-REINVESTED> 107<F1>
<NET-CHANGE-IN-ASSETS> 31115
<ACCUMULATED-NII-PRIOR> 19
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<GROSS-EXPENSE> 662
<AVERAGE-NET-ASSETS> 20203<F1>
<PER-SHARE-NAV-BEGIN> 11.720<F1>
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<EXPENSE-RATIO> 1.05<F1>
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<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 173
<NAME> THE ONE GROUP ASSET ALLOCATION FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<SHARES-COMMON-PRIOR> 1580<F1>
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<NET-INVESTMENT-INCOME> 1694
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<APPREC-INCREASE-CURRENT> 2880
<NET-CHANGE-FROM-OPS> 7430
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<DISTRIBUTIONS-OF-GAINS> 1129<F1>
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<NUMBER-OF-SHARES-REDEEMED> 115<F1>
<SHARES-REINVESTED> 117<F1>
<NET-CHANGE-IN-ASSETS> 31115
<ACCUMULATED-NII-PRIOR> 19
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 662
<AVERAGE-NET-ASSETS> 22720<F1>
<PER-SHARE-NAV-BEGIN> 11.760<F1>
<PER-SHARE-NII> .150<F1>
<PER-SHARE-GAIN-APPREC> .670<F1>
<PER-SHARE-DIVIDEND> .160<F1>
<PER-SHARE-DISTRIBUTIONS> .540<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 11.880<F1>
<EXPENSE-RATIO> 1.80<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 181
<NAME> THE ONE GROUP GOVERNMENT BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 710095
<INVESTMENTS-AT-VALUE> 714436
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<NET-INVESTMENT-INCOME> 23379
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<APPREC-INCREASE-CURRENT> 9020
<NET-CHANGE-FROM-OPS> 34226
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<NUMBER-OF-SHARES-REDEEMED> 12152<F1>
<SHARES-REINVESTED> 143<F1>
<NET-CHANGE-IN-ASSETS> (9962)
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<GROSS-EXPENSE> 2538
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<AVG-DEBT-OUTSTANDING> 0
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<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 182
<NAME> THE ONE GROUP GOVERNMENT BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<INVESTMENTS-AT-COST> 710095
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<NUMBER-OF-SHARES-REDEEMED> 784<F1>
<SHARES-REINVESTED> 84<F1>
<NET-CHANGE-IN-ASSETS> (9962)
<ACCUMULATED-NII-PRIOR> 0
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<OVERDIST-NET-GAINS-PRIOR> 20043
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2538
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<PER-SHARE-NAV-BEGIN> 9.56<F1>
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<EXPENSE-RATIO> .880<F1>
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<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 183
<NAME> THE ONE GROUP GOVERNMENT BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<NET-CHANGE-IN-ASSETS> (9962)
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<EXPENSE-RATIO> 1.53<F1>
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<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 191
<NAME> THE ONE GROUP ULTRA SHORT-TERM INCOME FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
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<APPREC-INCREASE-CURRENT> 630
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<FN>
<F1>FIDUCIARY SHARES
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 192
<NAME> THE ONE GROUP ULTRA SHORT-TERM INCOME FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
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<GROSS-EXPENSE> 313
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<PER-SHARE-GAIN-APPREC> .050<F1>
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<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>CLASS A SHARES
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 193
<NAME> THE ONE GROUP ULTRA SHORT-TERM INCOME FUND
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<S> <C>
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<EXPENSES-NET> 125
<NET-INVESTMENT-INCOME> 2194
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<OVERDIST-NET-GAINS-PRIOR> 3772
<GROSS-ADVISORY-FEES> 201
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 313
<AVERAGE-NET-ASSETS> 1321<F1>
<PER-SHARE-NAV-BEGIN> 9.76<F1>
<PER-SHARE-NII> .260<F1>
<PER-SHARE-GAIN-APPREC> .040<F1>
<PER-SHARE-DIVIDEND> .270<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.79<F1>
<EXPENSE-RATIO> 1.22<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>CLASS B SHARES
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 201
<NAME> THE ONE GROUP MUNICIPAL INCOME BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 341207
<INVESTMENTS-AT-VALUE> 345975
<RECEIVABLES> 6536
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<TOTAL-ASSETS> 352525
<PAYABLE-FOR-SECURITIES> 4902
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 2251
<TOTAL-LIABILITIES> 7153
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 349422
<SHARES-COMMON-STOCK> 29347<F1>
<SHARES-COMMON-PRIOR> 24956<F1>
<ACCUMULATED-NII-CURRENT> 20
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<OVERDISTRIBUTION-GAINS> 8838
<ACCUM-APPREC-OR-DEPREC> 4768
<NET-ASSETS> 345372
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<INTEREST-INCOME> 9616
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<EXPENSES-NET> 1074
<NET-INVESTMENT-INCOME> 8584
<REALIZED-GAINS-CURRENT> (759)
<APPREC-INCREASE-CURRENT> 4481
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<NUMBER-OF-SHARES-SOLD> 7050<F1>
<NUMBER-OF-SHARES-REDEEMED> 2677<F1>
<SHARES-REINVESTED> 18<F1>
<NET-CHANGE-IN-ASSETS> 55266
<ACCUMULATED-NII-PRIOR> 20
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 8079
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<GROSS-ADVISORY-FEES> 722
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1287
<AVERAGE-NET-ASSETS> 264672<F1>
<PER-SHARE-NAV-BEGIN> 9.66<F1>
<PER-SHARE-NII> .270<F1>
<PER-SHARE-GAIN-APPREC> .12<F1>
<PER-SHARE-DIVIDEND> .27<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.780<F1>
<EXPENSE-RATIO> .570<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 202
<NAME> THE ONE GROUP MUNICIPAL INCOME BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<INVESTMENTS-AT-COST> 341207
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<TOTAL-ASSETS> 352525
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<SHARES-COMMON-PRIOR> 2662<F1>
<ACCUMULATED-NII-CURRENT> 20
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<INTEREST-INCOME> 9616
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<EXPENSES-NET> 1074
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<REALIZED-GAINS-CURRENT> (759)
<APPREC-INCREASE-CURRENT> 4481
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<NUMBER-OF-SHARES-SOLD> 526<F1>
<NUMBER-OF-SHARES-REDEEMED> 247<F1>
<SHARES-REINVESTED> 54<F1>
<NET-CHANGE-IN-ASSETS> 8303
<ACCUMULATED-NII-PRIOR> 20
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 8079
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 722
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1287
<AVERAGE-NET-ASSETS> 27261<F1>
<PER-SHARE-NAV-BEGIN> 9.69<F1>
<PER-SHARE-NII> .260<F1>
<PER-SHARE-GAIN-APPREC> .12<F1>
<PER-SHARE-DIVIDEND> .26<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
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<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 203
<NAME> THE ONE GROUP MUNICIPAL INCOME BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 341207
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<TOTAL-ASSETS> 352525
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<SHARES-COMMON-PRIOR> 2403<F1>
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<APPREC-INCREASE-CURRENT> 4481
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<NUMBER-OF-SHARES-REDEEMED> 141<F1>
<SHARES-REINVESTED> 42<F1>
<NET-CHANGE-IN-ASSETS> 8303
<ACCUMULATED-NII-PRIOR> 20
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<OVERDISTRIB-NII-PRIOR> 8079
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<GROSS-ADVISORY-FEES> 722
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1287
<AVERAGE-NET-ASSETS> 26279<F1>
<PER-SHARE-NAV-BEGIN> 9.66<F1>
<PER-SHARE-NII> .220<F1>
<PER-SHARE-GAIN-APPREC> .11<F1>
<PER-SHARE-DIVIDEND> .22<F1>
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<PER-SHARE-NAV-END> 9.77<F1>
<EXPENSE-RATIO> 1.47<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 211
<NAME> THE ONE GROUP OHIO MUNICIPAL MONEY MARKET FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 88833
<INVESTMENTS-AT-VALUE> 88833
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<SENIOR-EQUITY> 0
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<SHARES-COMMON-STOCK> 52946<F1>
<SHARES-COMMON-PRIOR> 55946<F1>
<ACCUMULATED-NII-CURRENT> 0
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<NET-INVESTMENT-INCOME> 1421
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<NET-CHANGE-FROM-OPS> 1413
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<NUMBER-OF-SHARES-REDEEMED> 86421<F1>
<SHARES-REINVESTED> 46<F1>
<NET-CHANGE-IN-ASSETS> (7858)
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<ACCUMULATED-GAINS-PRIOR> 0
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<OVERDIST-NET-GAINS-PRIOR> 0
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<GROSS-EXPENSE> 337
<AVERAGE-NET-ASSETS> 53072<F1>
<PER-SHARE-NAV-BEGIN> 1.00<F1>
<PER-SHARE-NII> .016<F1>
<PER-SHARE-GAIN-APPREC> 0<F1>
<PER-SHARE-DIVIDEND> .016<F1>
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<PER-SHARE-NAV-END> 1.00<F1>
<EXPENSE-RATIO> .40<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 212
<NAME> THE ONE GROUP OHIO MUNICIPAL MONEY MARKET FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 88833
<INVESTMENTS-AT-VALUE> 88833
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<NET-INVESTMENT-INCOME> 1421
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<NET-CHANGE-FROM-OPS> 1413
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<NUMBER-OF-SHARES-REDEEMED> 130740<F1>
<SHARES-REINVESTED> 504<F1>
<NET-CHANGE-IN-ASSETS> (7858)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
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<OVERDIST-NET-GAINS-PRIOR> 0
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 337
<AVERAGE-NET-ASSETS> 41497<F1>
<PER-SHARE-NAV-BEGIN> 1.00<F1>
<PER-SHARE-NII> .014<F1>
<PER-SHARE-GAIN-APPREC> 0<F1>
<PER-SHARE-DIVIDEND> .014<F1>
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<EXPENSE-RATIO> .65<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 221
<NAME> THE ONE GROUP INTERMEDIATE BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<INVESTMENTS-AT-COST> 302377
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<SENIOR-EQUITY> 0
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<REALIZED-GAINS-CURRENT> (297)
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<GROSS-EXPENSE> 1211
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<EXPENSE-RATIO> .520<F1>
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<FN>
<F1>FIDUCIARY SHARES
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 222
<NAME> THE ONE GROUP INTERMEDIATE BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<SHARES-COMMON-PRIOR> 1389<F1>
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<ACCUM-APPREC-OR-DEPREC> 1201
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<NET-INVESTMENT-INCOME> 9261
<REALIZED-GAINS-CURRENT> (297)
<APPREC-INCREASE-CURRENT> 3975
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<NUMBER-OF-SHARES-REDEEMED> 230<F1>
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<NET-CHANGE-IN-ASSETS> 49790
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<GROSS-EXPENSE> 1211
<AVERAGE-NET-ASSETS> 13987<F1>
<PER-SHARE-NAV-BEGIN> 9.87<F1>
<PER-SHARE-NII> .310<F1>
<PER-SHARE-GAIN-APPREC> .120<F1>
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<PER-SHARE-NAV-END> 9.99<F1>
<EXPENSE-RATIO> .770<F1>
<AVG-DEBT-OUTSTANDING> 0
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<FN>
<F1>CLASS A SHARES
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</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 223
<NAME> THE ONE GROUP INTERMEDIATE BOND FUND
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<S> <C>
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<PER-SHARE-NAV-END> 9.96<F1>
<EXPENSE-RATIO> 1.42<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>CLASS B SHARES
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 231
<NAME> THE ONE GROUP LARGE COMPANY GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 737976
<INVESTMENTS-AT-VALUE> 939777
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<OTHER-ITEMS-LIABILITIES> 3395
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<SHARES-COMMON-PRIOR> 48320<F1>
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<NET-INVESTMENT-INCOME> 3965
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<APPREC-INCREASE-CURRENT> 42213
<NET-CHANGE-FROM-OPS> 81585
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<DISTRIBUTIONS-OF-INCOME> 3519<F1>
<DISTRIBUTIONS-OF-GAINS> 37414<F1>
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<NUMBER-OF-SHARES-SOLD> 5586<F1>
<NUMBER-OF-SHARES-REDEEMED> 7366<F1>
<SHARES-REINVESTED> 1411<F1>
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<ACCUMULATED-NII-PRIOR> 0
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<GROSS-EXPENSE> 4915
<AVERAGE-NET-ASSETS> 750674<F1>
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<PER-SHARE-NII> .080<F1>
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<PER-SHARE-DISTRIBUTIONS> .800<F1>
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<EXPENSE-RATIO> .970<F1>
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<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 232
<NAME> THE ONE GROUP LARGE COMPANY GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<ACCUM-APPREC-OR-DEPREC> 201801
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<APPREC-INCREASE-CURRENT> 42213
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<PER-SHARE-DIVIDEND> .050<F1>
<PER-SHARE-DISTRIBUTIONS> .800<F1>
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<FN>
<F1>CLASS A SHARES
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 233
<NAME> THE ONE GROUP LARGE COMPANY GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
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<FISCAL-YEAR-END> JUN-30-1997
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<ACCUMULATED-NII-CURRENT> 52
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<ACCUM-APPREC-OR-DEPREC> 201801
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<APPREC-INCREASE-CURRENT> 42213
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<SHARES-REINVESTED> 232<F1>
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<GROSS-EXPENSE> 4915
<AVERAGE-NET-ASSETS> 68608<F1>
<PER-SHARE-NAV-BEGIN> 15.630<F1>
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<PER-SHARE-GAIN-APPREC> 1.350<F1>
<PER-SHARE-DIVIDEND> .000<F1>
<PER-SHARE-DISTRIBUTIONS> .800<F1>
<RETURNS-OF-CAPITAL> .000<F1>
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<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>CLASS B SHARES
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 241
<NAME> THE ONE GROUP KENTUCKY MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<INVESTMENTS-AT-VALUE> 42114
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 43316
<SHARES-COMMON-STOCK> 3182<F1>
<SHARES-COMMON-PRIOR> 3018<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
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<OVERDISTRIBUTION-GAINS> 1822
<ACCUM-APPREC-OR-DEPREC> 1032
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<INTEREST-INCOME> 1092
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<EXPENSES-NET> 144
<NET-INVESTMENT-INCOME> 972
<REALIZED-GAINS-CURRENT> (7)
<APPREC-INCREASE-CURRENT> 662
<NET-CHANGE-FROM-OPS> 1627
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 752<F1>
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<SHARES-REINVESTED> 1<F1>
<NET-CHANGE-IN-ASSETS> 2591
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<GROSS-EXPENSE> 208
<AVERAGE-NET-ASSETS> 32005<F1>
<PER-SHARE-NAV-BEGIN> 10.04<F1>
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<PER-SHARE-GAIN-APPREC> .160<F1>
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<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 242
<NAME> THE ONE GROUP KENTUCKY MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<SHARES-COMMON-PRIOR> 814<F1>
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<REALIZED-GAINS-CURRENT> (7)
<APPREC-INCREASE-CURRENT> 662
<NET-CHANGE-FROM-OPS> 1627
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<NUMBER-OF-SHARES-SOLD> 6<F1>
<NUMBER-OF-SHARES-REDEEMED> 37<F1>
<SHARES-REINVESTED> 9<F1>
<NET-CHANGE-IN-ASSETS> 2591
<ACCUMULATED-NII-PRIOR> 0
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<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 1815
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 208
<AVERAGE-NET-ASSETS> 8109<F1>
<PER-SHARE-NAV-BEGIN> 10.05<F1>
<PER-SHARE-NII> .220<F1>
<PER-SHARE-GAIN-APPREC> .170<F1>
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<PER-SHARE-DISTRIBUTIONS> .000<F1>
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<PER-SHARE-NAV-END> 10.210<F1>
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<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 243
<NAME> THE ONE GROUP KENTUCKY MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<INVESTMENTS-AT-COST> 41082
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<TOTAL-ASSETS> 42872
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<TOTAL-LIABILITIES> 346
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<PAID-IN-CAPITAL-COMMON> 43316
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<SHARES-COMMON-PRIOR> 146<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 1822
<ACCUM-APPREC-OR-DEPREC> 1032
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<EXPENSES-NET> 144
<NET-INVESTMENT-INCOME> 972
<REALIZED-GAINS-CURRENT> (7)
<APPREC-INCREASE-CURRENT> 662
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<NUMBER-OF-SHARES-REDEEMED> 7<F1>
<SHARES-REINVESTED> 2<F1>
<NET-CHANGE-IN-ASSETS> 2591
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<GROSS-ADVISORY-FEES> 127
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 208
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<PER-SHARE-DIVIDEND> .240<F1>
<PER-SHARE-DISTRIBUTIONS> .000<F1>
<RETURNS-OF-CAPITAL> 0<F1>
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<EXPENSE-RATIO> .600<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 251
<NAME> THE ONE GROUP LOUISIANA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<INVESTMENTS-AT-COST> 172389
<INVESTMENTS-AT-VALUE> 178318
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<SENIOR-EQUITY> 0
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<SHARES-COMMON-PRIOR> 13706<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
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<ACCUM-APPREC-OR-DEPREC> 5929
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<NET-INVESTMENT-INCOME> 4489
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 911
<AVERAGE-NET-ASSETS> 130989<F1>
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<PER-SHARE-GAIN-APPREC> .14<F1>
<PER-SHARE-DIVIDEND> .24<F1>
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<EXPENSE-RATIO> .650<F1>
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<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 252
<NAME> THE ONE GROUP LOUISIANA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
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<SHARES-COMMON-PRIOR> 5388<F1>
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<OVERDISTRIBUTION-GAINS> 731
<ACCUM-APPREC-OR-DEPREC> 5929
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<EXPENSES-NET> 688
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<REALIZED-GAINS-CURRENT> (135)
<APPREC-INCREASE-CURRENT> 2803
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<SHARES-REINVESTED> 78<F1>
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<GROSS-EXPENSE> 911
<AVERAGE-NET-ASSETS> 51447<F1>
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<PER-SHARE-DIVIDEND> .23<F1>
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<PER-SHARE-NAV-END> 10.070<F1>
<EXPENSE-RATIO> .900<F1>
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<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF FUNDS
<SERIES>
<NUMBER> 253
<NAME> THE ONE GROUP LOUISIANA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 172389
<INVESTMENTS-AT-VALUE> 178318
<RECEIVABLES> 3176
<ASSETS-OTHER> 1
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 181495
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 892
<TOTAL-LIABILITIES> 892
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 175405
<SHARES-COMMON-STOCK> 359<F1>
<SHARES-COMMON-PRIOR> 325<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 731
<ACCUM-APPREC-OR-DEPREC> 5929
<NET-ASSETS> 180603
<DIVIDEND-INCOME> 19
<INTEREST-INCOME> 5158
<OTHER-INCOME> 0
<EXPENSES-NET> 688
<NET-INVESTMENT-INCOME> 4489
<REALIZED-GAINS-CURRENT> (135)
<APPREC-INCREASE-CURRENT> 2803
<NET-CHANGE-FROM-OPS> 7157
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 69<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 47<F1>
<NUMBER-OF-SHARES-REDEEMED> 18<F1>
<SHARES-REINVESTED> 5<F1>
<NET-CHANGE-IN-ASSETS> 12140
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 596
<GROSS-ADVISORY-FEES> 562
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 911
<AVERAGE-NET-ASSETS> 3453<F1>
<PER-SHARE-NAV-BEGIN> 9.930<F1>
<PER-SHARE-NII> .200<F1>
<PER-SHARE-GAIN-APPREC> .14<F1>
<PER-SHARE-DIVIDEND> .20<F1>
<PER-SHARE-DISTRIBUTIONS> 0<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 10.070<F1>
<EXPENSE-RATIO> 1.55<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 261
<NAME> THE ONE GROUP GULF SOUTH GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 81453
<INVESTMENTS-AT-VALUE> 100215
<RECEIVABLES> 63
<ASSETS-OTHER> 17
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 100295
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 92
<TOTAL-LIABILITIES> 92
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 81128
<SHARES-COMMON-STOCK> 7980<F1>
<SHARES-COMMON-PRIOR> 7757<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 129
<ACCUMULATED-NET-GAINS> 442
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 18762
<NET-ASSETS> 100203
<DIVIDEND-INCOME> 273
<INTEREST-INCOME> 106
<OTHER-INCOME> 33
<EXPENSES-NET> 541
<NET-INVESTMENT-INCOME> (129)
<REALIZED-GAINS-CURRENT> 6229
<APPREC-INCREASE-CURRENT> (3378)
<NET-CHANGE-FROM-OPS> 2722
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 8358<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 282<F1>
<NUMBER-OF-SHARES-REDEEMED> 880<F1>
<SHARES-REINVESTED> 821<F1>
<NET-CHANGE-IN-ASSETS> (4069)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 4708
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 374
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 608
<AVERAGE-NET-ASSETS> 79632<F1>
<PER-SHARE-NAV-BEGIN> 10.750<F1>
<PER-SHARE-NII> (.010)<F1>
<PER-SHARE-GAIN-APPREC> .240<F1>
<PER-SHARE-DIVIDEND> .000<F1>
<PER-SHARE-DISTRIBUTIONS> 1.100<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.880<F1>
<EXPENSE-RATIO> 1.000<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 262
<NAME> THE ONE GROUP GULF SOUTH GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 81453
<INVESTMENTS-AT-VALUE> 100215
<RECEIVABLES> 63
<ASSETS-OTHER> 17
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 100295
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 92
<TOTAL-LIABILITIES> 92
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 81128
<SHARES-COMMON-STOCK> 1814<F1>
<SHARES-COMMON-PRIOR> 1710<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 129
<ACCUMULATED-NET-GAINS> 442
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 18762
<NET-ASSETS> 100203
<DIVIDEND-INCOME> 273
<INTEREST-INCOME> 106
<OTHER-INCOME> 33
<EXPENSES-NET> 541
<NET-INVESTMENT-INCOME> (129)
<REALIZED-GAINS-CURRENT> 6229
<APPREC-INCREASE-CURRENT> (3378)
<NET-CHANGE-FROM-OPS> 2722
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 1835<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 159<F1>
<NUMBER-OF-SHARES-REDEEMED> 245<F1>
<SHARES-REINVESTED> 190<F1>
<NET-CHANGE-IN-ASSETS> (4069)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 4708
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 374
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 608
<AVERAGE-NET-ASSETS> 17703<F1>
<PER-SHARE-NAV-BEGIN> 10.730<F1>
<PER-SHARE-NII> (.020)<F1>
<PER-SHARE-GAIN-APPREC> .290<F1>
<PER-SHARE-DIVIDEND> .000<F1>
<PER-SHARE-DISTRIBUTIONS> 1.100<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.900<F1>
<EXPENSE-RATIO> 1.250<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 263
<NAME> THE ONE GROUP GULF SOUTH GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 81453
<INVESTMENTS-AT-VALUE> 100215
<RECEIVABLES> 63
<ASSETS-OTHER> 17
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 100295
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 92
<TOTAL-LIABILITIES> 92
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 81128
<SHARES-COMMON-STOCK> 345<F1>
<SHARES-COMMON-PRIOR> 237<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 129
<ACCUMULATED-NET-GAINS> 442
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 18762
<NET-ASSETS> 100203
<DIVIDEND-INCOME> 273
<INTEREST-INCOME> 106
<OTHER-INCOME> 33
<EXPENSES-NET> 541
<NET-INVESTMENT-INCOME> (129)
<REALIZED-GAINS-CURRENT> 6229
<APPREC-INCREASE-CURRENT> (3378)
<NET-CHANGE-FROM-OPS> 2722
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 302<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 93<F1>
<NUMBER-OF-SHARES-REDEEMED> 16<F1>
<SHARES-REINVESTED> 31<F1>
<NET-CHANGE-IN-ASSETS> (4069)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 4708
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 374
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 608
<AVERAGE-NET-ASSETS> 2946<F1>
<PER-SHARE-NAV-BEGIN> 10.720<F1>
<PER-SHARE-NII> (.050)<F1>
<PER-SHARE-GAIN-APPREC> .270<F1>
<PER-SHARE-DIVIDEND> .000<F1>
<PER-SHARE-DISTRIBUTIONS> 1.100<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.840<F1>
<EXPENSE-RATIO> 2.000<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 271
<NAME> THE ONE GROUP VALUE GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 250906
<INVESTMENTS-AT-VALUE> 284984
<RECEIVABLES> 569
<ASSETS-OTHER> 13
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 285566
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 881
<TOTAL-LIABILITIES> 881
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 245933
<SHARES-COMMON-STOCK> 24755<F1>
<SHARES-COMMON-PRIOR> 18398<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 10
<ACCUMULATED-NET-GAINS> 4965
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 33797
<NET-ASSETS> 284685
<DIVIDEND-INCOME> 2287
<INTEREST-INCOME> 441
<OTHER-INCOME> 24
<EXPENSES-NET> 1301
<NET-INVESTMENT-INCOME> 1451
<REALIZED-GAINS-CURRENT> 15897
<APPREC-INCREASE-CURRENT> 8361
<NET-CHANGE-FROM-OPS> 25709
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1269<F1>
<DISTRIBUTIONS-OF-GAINS> 36353<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 4994<F1>
<NUMBER-OF-SHARES-REDEEMED> 1986<F1>
<SHARES-REINVESTED> 3349<F1>
<NET-CHANGE-IN-ASSETS> 52816
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 32307
<OVERDISTRIB-NII-PRIOR> 12
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 941
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1397
<AVERAGE-NET-ASSETS> 209919<F1>
<PER-SHARE-NAV-BEGIN> 10.390<F1>
<PER-SHARE-NII> .060<F1>
<PER-SHARE-GAIN-APPREC> 1.010<F1>
<PER-SHARE-DIVIDEND> .060<F1>
<PER-SHARE-DISTRIBUTIONS> 1.730<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.670<F1>
<EXPENSE-RATIO> .960<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 272
<NAME> THE ONE GROUP VALUE GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 250906
<INVESTMENTS-AT-VALUE> 284984
<RECEIVABLES> 569
<ASSETS-OTHER> 13
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 285566
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 881
<TOTAL-LIABILITIES> 881
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 245933
<SHARES-COMMON-STOCK> 4017<F1>
<SHARES-COMMON-PRIOR> 3462<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 10
<ACCUMULATED-NET-GAINS> 4965
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 33797
<NET-ASSETS> 284685
<DIVIDEND-INCOME> 2287
<INTEREST-INCOME> 441
<OTHER-INCOME> 24
<EXPENSES-NET> 1301
<NET-INVESTMENT-INCOME> 1451
<REALIZED-GAINS-CURRENT> 15897
<APPREC-INCREASE-CURRENT> 8361
<NET-CHANGE-FROM-OPS> 25709
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 173<F1>
<DISTRIBUTIONS-OF-GAINS> 5894<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 362<F1>
<NUMBER-OF-SHARES-REDEEMED> 408<F1>
<SHARES-REINVESTED> 601<F1>
<NET-CHANGE-IN-ASSETS> 52816
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 32307
<OVERDISTRIB-NII-PRIOR> 12
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 941
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1397
<AVERAGE-NET-ASSETS> 36540<F1>
<PER-SHARE-NAV-BEGIN> 10.390<F1>
<PER-SHARE-NII> .050<F1>
<PER-SHARE-GAIN-APPREC> 1.000<F1>
<PER-SHARE-DIVIDEND> .050<F1>
<PER-SHARE-DISTRIBUTIONS> 1.730<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.660<F1>
<EXPENSE-RATIO> 1.210<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>CLASS A SHARES
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 273
<NAME> THE ONE GROUP VALUE GROWTH FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 250906
<INVESTMENTS-AT-VALUE> 284984
<RECEIVABLES> 569
<ASSETS-OTHER> 13
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 285566
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 881
<TOTAL-LIABILITIES> 881
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 245933
<SHARES-COMMON-STOCK> 688<F1>
<SHARES-COMMON-PRIOR> 450<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 10
<ACCUMULATED-NET-GAINS> 4965
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 33797
<NET-ASSETS> 284685
<DIVIDEND-INCOME> 2287
<INTEREST-INCOME> 441
<OTHER-INCOME> 24
<EXPENSES-NET> 1301
<NET-INVESTMENT-INCOME> 1451
<REALIZED-GAINS-CURRENT> 15897
<APPREC-INCREASE-CURRENT> 8361
<NET-CHANGE-FROM-OPS> 25709
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 7<F1>
<DISTRIBUTIONS-OF-GAINS> 992<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 182<F1>
<NUMBER-OF-SHARES-REDEEMED> 47<F1>
<SHARES-REINVESTED> 103<F1>
<NET-CHANGE-IN-ASSETS> 52816
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 32307
<OVERDISTRIB-NII-PRIOR> 12
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 941
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1397
<AVERAGE-NET-ASSETS> 5669<F1>
<PER-SHARE-NAV-BEGIN> 10.390<F1>
<PER-SHARE-NII> .010<F1>
<PER-SHARE-GAIN-APPREC> .990<F1>
<PER-SHARE-DIVIDEND> .010<F1>
<PER-SHARE-DISTRIBUTIONS> 1.730<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.650<F1>
<EXPENSE-RATIO> 2.090<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>CLASS B SHARES
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 351
<NAME> THE ONE GROUP INVESTOR GROWTH FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 17336
<INVESTMENTS-AT-VALUE> 17239
<RECEIVABLES> 1196
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 18435
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1198
<TOTAL-LIABILITIES> 1198
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 17334
<SHARES-COMMON-STOCK> 1734<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (97)
<NET-ASSETS> 17237
<DIVIDEND-INCOME> 23
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 2
<NET-INVESTMENT-INCOME> 21
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (97)
<NET-CHANGE-FROM-OPS> (76)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 21<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 1736<F1>
<NUMBER-OF-SHARES-REDEEMED> 2<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 17237<F1>
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2
<AVERAGE-NET-ASSETS> 14883<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.01<F1>
<PER-SHARE-GAIN-APPREC> (0.06)<F1>
<PER-SHARE-DIVIDEND> 0.01<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0.00<F1>
<PER-SHARE-NAV-END> 9.94<F1>
<EXPENSE-RATIO> 0.20<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 352
<NAME> THE ONE GROUP INVESTOR GROWTH FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 17336
<INVESTMENTS-AT-VALUE> 17239
<RECEIVABLES> 1196
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 18435
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1198
<TOTAL-LIABILITIES> 1198
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 17334
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<OVERDISTRIBUTION-NII> 0
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<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (97)
<NET-ASSETS> 17237
<DIVIDEND-INCOME> 23
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 2
<NET-INVESTMENT-INCOME> 21
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (97)
<NET-CHANGE-FROM-OPS> (76)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 0<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 17237
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.01<F1>
<PER-SHARE-GAIN-APPREC> (0.05)<F1>
<PER-SHARE-DIVIDEND> 0.00<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0.00<F1>
<PER-SHARE-NAV-END> 9.96<F1>
<EXPENSE-RATIO> 0.45<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 353
<NAME> THE ONE GROUP INVESTOR GROWTH FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 17336
<INVESTMENTS-AT-VALUE> 17239
<RECEIVABLES> 1196
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 18435
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1198
<TOTAL-LIABILITIES> 1198
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 17334
<SHARES-COMMON-STOCK> 0<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (97)
<NET-ASSETS> 17237
<DIVIDEND-INCOME> 23
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 2
<NET-INVESTMENT-INCOME> 21
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (97)
<NET-CHANGE-FROM-OPS> (76)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 0<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 17237
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.01<F1>
<PER-SHARE-GAIN-APPREC> (0.05)<F1>
<PER-SHARE-DIVIDEND> 0.00<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0.00<F1>
<PER-SHARE-NAV-END> 9.96<F1>
<EXPENSE-RATIO> 1.20<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 361
<NAME> THE ONE GROUP INVESTOR GROWTH & INCOME FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 19112
<INVESTMENTS-AT-VALUE> 19056
<RECEIVABLES> 62
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 19118
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 62
<TOTAL-LIABILITIES> 62
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 19119
<SHARES-COMMON-STOCK> 1917<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 7
<ACCUM-APPREC-OR-DEPREC> (56)
<NET-ASSETS> 19056
<DIVIDEND-INCOME> 35
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 2
<NET-INVESTMENT-INCOME> 33
<REALIZED-GAINS-CURRENT> (7)
<APPREC-INCREASE-CURRENT> (56)
<NET-CHANGE-FROM-OPS> (30)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 33<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 1958<F1>
<NUMBER-OF-SHARES-REDEEMED> 41<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 19056
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2
<AVERAGE-NET-ASSETS> 16848<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.02<F1>
<PER-SHARE-GAIN-APPREC> (0.06)<F1>
<PER-SHARE-DIVIDEND> 0.02<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.94<F1>
<EXPENSE-RATIO> 0.16<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 362
<NAME> THE ONE GROUP INVESTOR GROWTH & INCOME FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 19112
<INVESTMENTS-AT-VALUE> 19056
<RECEIVABLES> 62
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 19118
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<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 62
<TOTAL-LIABILITIES> 62
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 19119
<SHARES-COMMON-STOCK> 0<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 7
<ACCUM-APPREC-OR-DEPREC> (56)
<NET-ASSETS> 19056
<DIVIDEND-INCOME> 35
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 2
<NET-INVESTMENT-INCOME> 33
<REALIZED-GAINS-CURRENT> (7)
<APPREC-INCREASE-CURRENT> (56)
<NET-CHANGE-FROM-OPS> (30)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 0<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 19056
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.01<F1>
<PER-SHARE-GAIN-APPREC> (0.07)<F1>
<PER-SHARE-DIVIDEND> 0.00<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.94<F1>
<EXPENSE-RATIO> 0.41<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 363
<NAME> THE ONE GROUP INVESTOR GROWTH & INCOME FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 19112
<INVESTMENTS-AT-VALUE> 19056
<RECEIVABLES> 62
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 19118
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 62
<TOTAL-LIABILITIES> 62
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 19119
<SHARES-COMMON-STOCK> 0<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 7
<ACCUM-APPREC-OR-DEPREC> (56)
<NET-ASSETS> 19056
<DIVIDEND-INCOME> 35
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 2
<NET-INVESTMENT-INCOME> 33
<REALIZED-GAINS-CURRENT> (7)
<APPREC-INCREASE-CURRENT> (56)
<NET-CHANGE-FROM-OPS> (30)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 0<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 19056
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.01<F1>
<PER-SHARE-GAIN-APPREC> (0.07)<F1>
<PER-SHARE-DIVIDEND> 0.00<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.94<F1>
<EXPENSE-RATIO> 1.16<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUTAL FUNDS
<SERIES>
<NUMBER> 391
<NAME> THE ONE GROUP INVESTOR CONSERVATIVE GROWTH FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 9203
<INVESTMENTS-AT-VALUE> 9140
<RECEIVABLES> 29
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 9169
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 28
<TOTAL-LIABILITIES> 28
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 9204
<SHARES-COMMON-STOCK> 920<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (63)
<NET-ASSETS> 9141
<DIVIDEND-INCOME> 27
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 1
<NET-INVESTMENT-INCOME> 26
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (63)
<NET-CHANGE-FROM-OPS> (37)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 26<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 923<F1>
<NUMBER-OF-SHARES-REDEEMED> 3<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 9141
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1
<AVERAGE-NET-ASSETS> 8549<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.03<F1>
<PER-SHARE-GAIN-APPREC> (0.06)<F1>
<PER-SHARE-DIVIDEND> 0.03<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.94<F1>
<EXPENSE-RATIO> 0.16<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUTAL FUNDS
<SERIES>
<NUMBER> 392
<NAME> THE ONE GROUP INVESTOR CONSERVATIVE GROWTH FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 9203
<INVESTMENTS-AT-VALUE> 9140
<RECEIVABLES> 29
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 9169
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 28
<TOTAL-LIABILITIES> 28
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 9204
<SHARES-COMMON-STOCK> 0<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (63)
<NET-ASSETS> 9141
<DIVIDEND-INCOME> 27
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 1
<NET-INVESTMENT-INCOME> 26
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (63)
<NET-CHANGE-FROM-OPS> (37)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 0<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 9141
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.00<F1>
<PER-SHARE-GAIN-APPREC> (0.07)<F1>
<PER-SHARE-DIVIDEND> 0.00<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.93<F1>
<EXPENSE-RATIO> 0.41<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUTAL FUNDS
<SERIES>
<NUMBER> 393
<NAME> THE ONE GROUP INVESTOR CONSERVATIVE GROWTH FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 9203
<INVESTMENTS-AT-VALUE> 9140
<RECEIVABLES> 29
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 9169
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 28
<TOTAL-LIABILITIES> 28
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 9204
<SHARES-COMMON-STOCK> 0<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (63)
<NET-ASSETS> 9141
<DIVIDEND-INCOME> 27
<INTEREST-INCOME> 0
<OTHER-INCOME> 0
<EXPENSES-NET> 1
<NET-INVESTMENT-INCOME> 26
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (63)
<NET-CHANGE-FROM-OPS> (37)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 0<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 9141
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.00<F1>
<PER-SHARE-GAIN-APPREC> (0.07)<F1>
<PER-SHARE-DIVIDEND> 0.00<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.93<F1>
<EXPENSE-RATIO> 1.16<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUTAL FUNDS
<SERIES>
<NUMBER> 401
<NAME> THE ONE GROUP INVESTOR BALANCED FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 43465
<INVESTMENTS-AT-VALUE> 43219
<RECEIVABLES> 6412
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<OTHER-ITEMS-LIABILITIES> 6411
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<SENIOR-EQUITY> 0
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<SHARES-COMMON-STOCK> 4350<F1>
<SHARES-COMMON-PRIOR> 0<F1>
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<ACCUM-APPREC-OR-DEPREC> (246)
<NET-ASSETS> 43220
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<NET-INVESTMENT-INCOME> 89
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<APPREC-INCREASE-CURRENT> (246)
<NET-CHANGE-FROM-OPS> (157)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 89<F1>
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<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 4373<F1>
<NUMBER-OF-SHARES-REDEEMED> 23<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 43220
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
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<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3
<AVERAGE-NET-ASSETS> 34467<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.02<F1>
<PER-SHARE-GAIN-APPREC> (0.06)<F1>
<PER-SHARE-DIVIDEND> 0.02<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
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<PER-SHARE-NAV-END> 9.94<F1>
<EXPENSE-RATIO> 0.14<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUTAL FUNDS
<SERIES>
<NUMBER> 402
<NAME> THE ONE GROUP INVESTOR BALANCED FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 43465
<INVESTMENTS-AT-VALUE> 43219
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<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (246)
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<APPREC-INCREASE-CURRENT> (246)
<NET-CHANGE-FROM-OPS> (157)
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<DISTRIBUTIONS-OTHER> 0<F1>
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<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 43220
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.01<F1>
<PER-SHARE-GAIN-APPREC> (0.06)<F1>
<PER-SHARE-DIVIDEND> 0.00<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.95<F1>
<EXPENSE-RATIO> 0.39<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUTAL FUNDS
<SERIES>
<NUMBER> 403
<NAME> THE ONE GROUP INVESTOR BALANCED FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> OTHER
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JUL-01-1996
<PERIOD-END> DEC-31-1996
<INVESTMENTS-AT-COST> 43465
<INVESTMENTS-AT-VALUE> 43219
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<SENIOR-LONG-TERM-DEBT> 0
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<TOTAL-LIABILITIES> 6411
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<PAID-IN-CAPITAL-COMMON> 43466
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<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
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<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (246)
<NET-ASSETS> 43220
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<EXPENSES-NET> 3
<NET-INVESTMENT-INCOME> 89
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<APPREC-INCREASE-CURRENT> (246)
<NET-CHANGE-FROM-OPS> (157)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
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<DISTRIBUTIONS-OTHER> 0<F1>
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<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 43220
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.00<F1>
<PER-SHARE-NII> 0.01<F1>
<PER-SHARE-GAIN-APPREC> (0.06)<F1>
<PER-SHARE-DIVIDEND> 0.00<F1>
<PER-SHARE-DISTRIBUTIONS> 0.00<F1>
<RETURNS-OF-CAPITAL> 0<F1>
<PER-SHARE-NAV-END> 9.95<F1>
<EXPENSE-RATIO> 1.14<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 291
<NAME> WEST VIRGINIA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JAN-20-1997
<PERIOD-END> MAR-31-1997
<INVESTMENTS-AT-COST> 90625
<INVESTMENTS-AT-VALUE> 93971
<RECEIVABLES> 1952
<ASSETS-OTHER> 1
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 90863
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<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (20)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3346
<NET-ASSETS> 94189
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<REALIZED-GAINS-CURRENT> (20)
<APPREC-INCREASE-CURRENT> (543)
<NET-CHANGE-FROM-OPS> 341
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 903<F1>
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<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 9604<F1>
<NUMBER-OF-SHARES-REDEEMED> 215<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 94189
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 138
<AVERAGE-NET-ASSETS> 92693<F1>
<PER-SHARE-NAV-BEGIN> 10.000<F1>
<PER-SHARE-NII> .100<F1>
<PER-SHARE-GAIN-APPREC> (.060)<F1>
<PER-SHARE-DIVIDEND> .100<F1>
<PER-SHARE-DISTRIBUTIONS> .000<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.940<F1>
<EXPENSE-RATIO> .590<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 292
<NAME> WEST VIRGINIA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JAN-20-1997
<PERIOD-END> MAR-31-1997
<INVESTMENTS-AT-COST> 90625
<INVESTMENTS-AT-VALUE> 93971
<RECEIVABLES> 1952
<ASSETS-OTHER> 1
<OTHER-ITEMS-ASSETS> 0
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 90863
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<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (20)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3346
<NET-ASSETS> 94189
<DIVIDEND-INCOME> 12
<INTEREST-INCOME> 997
<OTHER-INCOME> 0
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<NET-INVESTMENT-INCOME> 904
<REALIZED-GAINS-CURRENT> (20)
<APPREC-INCREASE-CURRENT> (543)
<NET-CHANGE-FROM-OPS> 341
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 1<F1>
<DISTRIBUTIONS-OF-GAINS> 0<F1>
<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 79<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 94189
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 81
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 138
<AVERAGE-NET-ASSETS> 115<F1>
<PER-SHARE-NAV-BEGIN> 10.000<F1>
<PER-SHARE-NII> .030<F1>
<PER-SHARE-GAIN-APPREC> .030<F1>
<PER-SHARE-DIVIDEND> .030<F1>
<PER-SHARE-DISTRIBUTIONS> .000<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 10.030<F1>
<EXPENSE-RATIO> .840<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 293
<NAME> WEST VIRGINIA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JAN-20-1997
<PERIOD-END> MAR-31-1997
<INVESTMENTS-AT-COST> 90625
<INVESTMENTS-AT-VALUE> 93971
<RECEIVABLES> 1952
<ASSETS-OTHER> 1
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 95924
<PAYABLE-FOR-SECURITIES> 1000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 735
<TOTAL-LIABILITIES> 1735
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 90863
<SHARES-COMMON-STOCK> 6<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (20)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3346
<NET-ASSETS> 94189
<DIVIDEND-INCOME> 12
<INTEREST-INCOME> 997
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<EXPENSES-NET> 105
<NET-INVESTMENT-INCOME> 904
<REALIZED-GAINS-CURRENT> (20)
<APPREC-INCREASE-CURRENT> (543)
<NET-CHANGE-FROM-OPS> 341
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
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<DISTRIBUTIONS-OTHER> 0<F1>
<NUMBER-OF-SHARES-SOLD> 6<F1>
<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 94189
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 81
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 138
<AVERAGE-NET-ASSETS> 22<F1>
<PER-SHARE-NAV-BEGIN> 10.000<F1>
<PER-SHARE-NII> .040<F1>
<PER-SHARE-GAIN-APPREC> (.010)<F1>
<PER-SHARE-DIVIDEND> .040<F1>
<PER-SHARE-DISTRIBUTIONS> .000<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.990<F1>
<EXPENSE-RATIO> 1.490<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 301
<NAME> ARIZONA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JAN-20-1997
<PERIOD-END> MAR-31-1997
<INVESTMENTS-AT-COST> 246755
<INVESTMENTS-AT-VALUE> 256054
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<SENIOR-LONG-TERM-DEBT> 0
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<TOTAL-LIABILITIES> 1383
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 249192
<SHARES-COMMON-STOCK> 26130<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 281
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 9299
<NET-ASSETS> 258772
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<EXPENSES-NET> 300
<NET-INVESTMENT-INCOME> 2600
<REALIZED-GAINS-CURRENT> 281
<APPREC-INCREASE-CURRENT> (2798)
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<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 2600<F1>
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<NUMBER-OF-SHARES-REDEEMED> 626<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 258772
<ACCUMULATED-NII-PRIOR> 0
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<OVERDIST-NET-GAINS-PRIOR> 0
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<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 377
<AVERAGE-NET-ASSETS> 264488<F1>
<PER-SHARE-NAV-BEGIN> 10.000<F1>
<PER-SHARE-NII> .100<F1>
<PER-SHARE-GAIN-APPREC> (.100)<F1>
<PER-SHARE-DIVIDEND> .100<F1>
<PER-SHARE-DISTRIBUTIONS> .000<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.900<F1>
<EXPENSE-RATIO> .590<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Fiduciary Class
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 302
<NAME> ARIZONA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JAN-20-1997
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<INVESTMENTS-AT-COST> 246755
<INVESTMENTS-AT-VALUE> 256054
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<TOTAL-LIABILITIES> 1383
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 249192
<SHARES-COMMON-STOCK> 0<F1>
<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 281
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 9299
<NET-ASSETS> 258772
<DIVIDEND-INCOME> 14
<INTEREST-INCOME> 2886
<OTHER-INCOME> 0
<EXPENSES-NET> 300
<NET-INVESTMENT-INCOME> 2600
<REALIZED-GAINS-CURRENT> 281
<APPREC-INCREASE-CURRENT> (2798)
<NET-CHANGE-FROM-OPS> 83
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0<F1>
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<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 258772
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 228
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 377
<AVERAGE-NET-ASSETS> 1<F1>
<PER-SHARE-NAV-BEGIN> 10.000<F1>
<PER-SHARE-NII> .030<F1>
<PER-SHARE-GAIN-APPREC> (.090)<F1>
<PER-SHARE-DIVIDEND> .030<F1>
<PER-SHARE-DISTRIBUTIONS> .000<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.910<F1>
<EXPENSE-RATIO> .840<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class A
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 303
<NAME> ARIZONA MUNICIPAL BOND FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JAN-20-1997
<PERIOD-END> MAR-31-1997
<INVESTMENTS-AT-COST> 246755
<INVESTMENTS-AT-VALUE> 256054
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<PER-SHARE-NAV-BEGIN> 10.000<F1>
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<PER-SHARE-GAIN-APPREC> (.090)<F1>
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<AVG-DEBT-OUTSTANDING> 0
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<F1>Class B
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 411
<NAME> TREASURY & AGENCY FUND
<MULTIPLIER> 1,000
<S> <C>
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<FISCAL-YEAR-END> JUN-30-1997
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<INVESTMENTS-AT-COST> 108633
<INVESTMENTS-AT-VALUE> 108959
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<ACCUMULATED-NII-PRIOR> 0
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<FN>
<F1>Fiduciary Class
</FN>
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WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 412
<NAME> TREASURY & AGENCY FUND
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<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JAN-20-1997
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<INVESTMENTS-AT-COST> 108633
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<APPREC-INCREASE-CURRENT> (1705)
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<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 87
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 170
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.000<F1>
<PER-SHARE-NII> .130<F1>
<PER-SHARE-GAIN-APPREC> (.140)<F1>
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<EXPENSE-RATIO> .700<F1>
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<FN>
<F1>Class A
</FN>
</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000763852
<NAME> THE ONE GROUP FAMILY OF MUTUAL FUNDS
<SERIES>
<NUMBER> 413
<NAME> TREASURY & AGENCY FUND
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> JUN-30-1997
<PERIOD-START> JAN-20-1997
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<INVESTMENTS-AT-COST> 108633
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<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 111745
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<SHARES-COMMON-PRIOR> 0<F1>
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 157
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<NET-INVESTMENT-INCOME> 1407
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<APPREC-INCREASE-CURRENT> (1705)
<NET-CHANGE-FROM-OPS> (141)
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<NUMBER-OF-SHARES-REDEEMED> 0<F1>
<SHARES-REINVESTED> 0<F1>
<NET-CHANGE-IN-ASSETS> 112228
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 87
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 170
<AVERAGE-NET-ASSETS> 0<F1>
<PER-SHARE-NAV-BEGIN> 10.000<F1>
<PER-SHARE-NII> .120<F1>
<PER-SHARE-GAIN-APPREC> (.140)<F1>
<PER-SHARE-DIVIDEND> .120<F1>
<PER-SHARE-DISTRIBUTIONS> .000<F1>
<RETURNS-OF-CAPITAL> .000<F1>
<PER-SHARE-NAV-END> 9.860<F1>
<EXPENSE-RATIO> 1.200<F1>
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
<FN>
<F1>Class B
</FN>
</TABLE>
