SECURITY INCOME FUND /KS/
NSAR-A, 1997-08-29
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<PAGE>      PAGE  1
000 A000000 06/30/97
000 C000000 0000088498
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 SECURITY INCOME FUND
001 B000000 811-2120
001 C000000 7854313127
002 A000000 700 HARRISON
002 B000000 TOPEKA
002 C000000 KS
002 D010000 66636
002 D020000 0001
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  7
007 C010100  1
007 C020100 CORPORATE BOND
007 C030100 N
007 C010200  2
007 C020200 U.S. GOVERNMENT
007 C030200 N
007 C010300  3
007 C020300 LIMITED MATURITY BOND
007 C030300 N
007 C010400  4
007 C020400 MFR GLOBAL HIGH YIELD
007 C030400 N
007 C010500  5
007 C020500 HIGH YIELD
007 C030500 N
007 C010600  6
007 C020600 MFR EMERGING MARKETS TOTAL RETURN
007 C030600 N
007 C010700  7
007 C020700 MFR GLOBAL ASSET ALLOCATION
007 C030700 N
007 C010800  8
007 C010900  9
007 C011000 10
010 A00AA01 SECURITY MANAGEMENT COMPANY, LLC
010 B00AA01 84-01497
010 C01AA01 TOPEKA
010 C02AA01 KS
<PAGE>      PAGE  2
010 C03AA01 66636
010 C04AA01 0001
011 A00AA01 SECURITY DISTRIBUTORS, INC.
011 B00AA01 8-10781
011 C01AA01 TOPEKA
011 C02AA01 KS
011 C03AA01 66636
011 C04AA01 0001
012 A00AA01 SECURITY MANAGEMENT COMPANY, LLC
012 B00AA01 84-01497
012 C01AA01 TOPEKA
012 C02AA01 KS
012 C03AA01 66636
012 C04AA01 0001
013 A00AA01 ERNST & YOUNG LLP
013 B01AA01 KANSAS CITY
013 B02AA01 MO
013 B03AA01 64105
013 B04AA01 2100
018  00AA00 Y
019 A00AA00 Y
019 B00AA00   29
019 C00AA00 SECURITYFU
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020 B000001 74-2817852
020 C000001      3
020 A000002 MERRILL LYNCH
020 B000002 13-5674085
020 C000002      1
020 A000003 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP
020 B000003 13-2741729
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021  000000        5
022 A000001 SALOMON BROTHERS, INC.
022 B000001 13-3082694
022 C000001     13440
022 D000001     24846
022 A000002 SMITH BARNEY
022 B000002 13-3371860
022 C000002     11099
022 D000002      5833
022 A000003 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP
022 B000003 13-2741729
022 C000003     10007
<PAGE>      PAGE  3
022 D000003      6448
022 A000004 MERRILL LYNCH
022 B000004 13-5674085
022 C000004      7163
022 D000004      7838
022 A000005 ABN AMRO SECURITIES, INC.
022 B000005 13-3227945
022 C000005      5393
022 D000005      7422
022 A000006 MORGAN STANLEY & COMPANY, INC.
022 B000006 13-2655998
022 C000006      2816
022 D000006      3151
022 A000007 COMMERCE BANK OF KANSAS CITY
022 B000007 44-0206815
022 C000007        99
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022 A000008 CHASE SECURITIES, INC.
022 B000008 13-3112953
022 C000008      3882
022 D000008      1811
022 A000009 LEHMAN BROTHERS, INC.
022 B000009 13-2518466
022 C000009      2642
022 D000009      1071
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022 D000010         0
023 C000000      71432
023 D000000      73908
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<PAGE>      PAGE  4
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<PAGE>      PAGE  5
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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008 B000201 A
008 C000201 801-8008
008 D010201 TOPEKA
008 D020201 KS
008 D030201 66636
008 D040201 0001
015 A000201 UMB BANK, N.A.
015 B000201 C
015 C010201 KANSAS CITY
015 C020201 MO
015 C030201 64106
015 E010201 X
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<PAGE>      PAGE  10
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<PAGE>      PAGE  11
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067  000200 N
068 A000200 N
068 B000200 N
069  000200 N
070 A010200 Y
070 A020200 N
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070 B020200 N
070 C010200 N
070 C020200 N
070 D010200 N
070 D020200 N
070 E010200 N
070 E020200 N
070 F010200 N
070 F020200 N
070 G010200 N
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
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<PAGE>      PAGE  13
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<PAGE>      PAGE  14
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<PAGE>      PAGE  15
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<PAGE>      PAGE  16
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<PAGE>      PAGE  17
067  000300 N
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070 I020300 N
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070 M020300 N
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<PAGE>      PAGE  18
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<PAGE>      PAGE  19
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008 A000401 MFR ADVISORS, INC.
008 B000401 A
008 C000401 801-38015
008 D010401 NEW YORK
008 D020401 NY
008 D030401 10006
008 A000402 LEXINGTON MANAGEMENT CORPORATION
008 B000402 S
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008 D010402 SADDLE BROOK
008 D020402 NJ
008 D030402 07662
008 A000403 DELETE
015 A000401 CHASE MANHATTAN BANK, N.A.
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<PAGE>      PAGE  20
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<PAGE>      PAGE  21
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<PAGE>      PAGE  22
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<PAGE>      PAGE  24
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008 C000501 801-8008
008 D010501 TOPEKA
008 D020501 KS
008 D030501 66636
008 D040501 0001
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015 C020501 MO
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<PAGE>      PAGE  25
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<PAGE>      PAGE  26
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<PAGE>      PAGE  27
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008 B000601 A
008 C000601 801-38015
008 D010601 NEW YORK
008 D020601 NY
008 D030601 10006
<PAGE>      PAGE  29
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008 B000602 S
008 C000602 801-8281
008 D010602 SADDLE BROOK
008 D020602 NJ
008 D030602 07663
015 A000601 CHASE MANHATTAN BANK, N.A.
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<PAGE>      PAGE  32
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008 B000701 A
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008 D010701 NEW YORK
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008 D030701 10006
008 A000702 LEXINGTON MANAGEMENT CORPORATION
008 B000702 S
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008 D030702 07663
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<PAGE>      PAGE  34
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008 D030703 66636
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015 A000701 CHASE MANHATTAN BANK, N.A.
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<PAGE>      PAGE  36
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<PAGE>      PAGE  37
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074 L000700       33
074 M000700        0
074 N000700     1087
074 O000700       50
074 P000700        0
074 Q000700        0
074 R010700        0
074 R020700        0
074 R030700        0
074 R040700        5
074 S000700        0
074 T000700     1032
074 U010700       50
074 U020700       50
074 V010700    10.32
074 V020700    10.31
074 W000700   0.0000
074 X000700        2
074 Y000700        0
075 A000700        0
075 B000700     1011
076  000700     0.00
SIGNATURE   JAMES R. SCHMANK                             
TITLE       V.P. AND TREASURER  
 


<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 011
   <NAME> CORPORATE BOND, CLASS A
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                            63109
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<SHARES-COMMON-STOCK>                             8606
<SHARES-COMMON-PRIOR>                            10681
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<NET-ASSETS>                                     65890
<DIVIDEND-INCOME>                                    0
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<OTHER-INCOME>                                       0
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<NET-INVESTMENT-INCOME>                           2334
<REALIZED-GAINS-CURRENT>                        (1302)
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<EQUALIZATION>                                       0
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<NUMBER-OF-SHARES-SOLD>                            419
<NUMBER-OF-SHARES-REDEEMED>                       2724
<SHARES-REINVESTED>                                230
<NET-CHANGE-IN-ASSETS>                         (14821)
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<ACCUMULATED-GAINS-PRIOR>                      (12357)
<OVERDISTRIB-NII-PRIOR>                              0
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<GROSS-EXPENSE>                                    415
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<PER-SHARE-NAV-BEGIN>                             6.87
<PER-SHARE-NII>                                   .233
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<PER-SHARE-NAV-END>                                6.8
<EXPENSE-RATIO>                                   1.08
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 012
   <NAME> CORPORATE BOND, CLASS B
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                            63109
<INVESTMENTS-AT-VALUE>                           63417
<RECEIVABLES>                                     1932
<ASSETS-OTHER>                                     662
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                   66011
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<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                         79187
<SHARES-COMMON-STOCK>                             1075
<SHARES-COMMON-PRIOR>                             1058
<ACCUMULATED-NII-CURRENT>                           54
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<ACCUMULATED-NET-GAINS>                        (13659)
<OVERDISTRIBUTION-GAINS>                             0
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<NET-ASSETS>                                     65890
<DIVIDEND-INCOME>                                    0
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<REALIZED-GAINS-CURRENT>                        (1302)
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<NET-CHANGE-FROM-OPS>                             1543
<EQUALIZATION>                                       0
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<NUMBER-OF-SHARES-REDEEMED>                        458
<SHARES-REINVESTED>                                168
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<GROSS-ADVISORY-FEES>                              176
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<GROSS-EXPENSE>                                    415
<AVERAGE-NET-ASSETS>                             70897
<PER-SHARE-NAV-BEGIN>                              6.9
<PER-SHARE-NII>                                   .195
<PER-SHARE-GAIN-APPREC>                         (.053)
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<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               6.84
<EXPENSE-RATIO>                                   1.85
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<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 021
   <NAME> US GOVERNMENT, CLASS A
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                             8189
<INVESTMENTS-AT-VALUE>                            8252
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<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           75
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<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          9253
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<SHARES-COMMON-PRIOR>                             1705
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<ACCUMULATED-NET-GAINS>                          (962)
<OVERDISTRIBUTION-GAINS>                             0
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<NET-ASSETS>                                      8366
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  317
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      32
<NET-INVESTMENT-INCOME>                            285
<REALIZED-GAINS-CURRENT>                            16
<APPREC-INCREASE-CURRENT>                         (98)
<NET-CHANGE-FROM-OPS>                              203
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          254
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            105
<NUMBER-OF-SHARES-REDEEMED>                        221
<SHARES-REINVESTED>                                 45
<NET-CHANGE-IN-ASSETS>                           (399)
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                        (978)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
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<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     53
<AVERAGE-NET-ASSETS>                             10252
<PER-SHARE-NAV-BEGIN>                             4.71
<PER-SHARE-NII>                                    .16
<PER-SHARE-GAIN-APPREC>                         (.047)
<PER-SHARE-DIVIDEND>                              .153
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               4.67
<EXPENSE-RATIO>                                    .55
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 022
   <NAME> US GOVERNMENT, CLASS B
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                             8189
<INVESTMENTS-AT-VALUE>                            8252
<RECEIVABLES>                                      165
<ASSETS-OTHER>                                      24
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<TOTAL-ASSETS>                                    8441
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
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<TOTAL-LIABILITIES>                                 75
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          9253
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<SHARES-COMMON-PRIOR>                              140
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<ACCUMULATED-NET-GAINS>                          (962)
<OVERDISTRIBUTION-GAINS>                             0
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<NET-ASSETS>                                      8366
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  317
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      32
<NET-INVESTMENT-INCOME>                            285
<REALIZED-GAINS-CURRENT>                            16
<APPREC-INCREASE-CURRENT>                         (98)
<NET-CHANGE-FROM-OPS>                              203
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                           20
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             25
<NUMBER-OF-SHARES-REDEEMED>                         13
<SHARES-REINVESTED>                                  4
<NET-CHANGE-IN-ASSETS>                              68
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                        (978)
<OVERDISTRIB-NII-PRIOR>                              0
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<GROSS-EXPENSE>                                     53
<AVERAGE-NET-ASSETS>                             10252
<PER-SHARE-NAV-BEGIN>                             4.71
<PER-SHARE-NII>                                    .12
<PER-SHARE-GAIN-APPREC>                         (.027)
<PER-SHARE-DIVIDEND>                              .133
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                               4.67
<EXPENSE-RATIO>                                   1.52
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 031
   <NAME> LIMITED MATURITY BOND, CLASS A
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                             5863
<INVESTMENTS-AT-VALUE>                            5924
<RECEIVABLES>                                      253
<ASSETS-OTHER>                                      96
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    6273
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           14
<TOTAL-LIABILITIES>                                 14
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          6270
<SHARES-COMMON-STOCK>                              530
<SHARES-COMMON-PRIOR>                              487
<ACCUMULATED-NII-CURRENT>                           10
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           (82)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            61
<NET-ASSETS>                                      6259
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  228
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      22
<NET-INVESTMENT-INCOME>                            206
<REALIZED-GAINS-CURRENT>                          (13)
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<NET-CHANGE-FROM-OPS>                              191
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          170
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                            105
<NUMBER-OF-SHARES-REDEEMED>                         77
<SHARES-REINVESTED>                                 15
<NET-CHANGE-IN-ASSETS>                             429
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                         (70)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
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<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     37
<AVERAGE-NET-ASSETS>                              5969
<PER-SHARE-NAV-BEGIN>                            10.14
<PER-SHARE-NII>                                   .354
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<PER-SHARE-NAV-END>                              10.12
<EXPENSE-RATIO>                                    .63
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 032
   <NAME> LIMITED MATURITY BOND, CLASS B
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                             5863
<INVESTMENTS-AT-VALUE>                            5924
<RECEIVABLES>                                      253
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<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    6273
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           14
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<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          6270
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<SHARES-COMMON-PRIOR>                               75
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<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            61
<NET-ASSETS>                                      6259
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  228
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      22
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<REALIZED-GAINS-CURRENT>                          (13)
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<EQUALIZATION>                                       0
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<NUMBER-OF-SHARES-SOLD>                             18
<NUMBER-OF-SHARES-REDEEMED>                          8
<SHARES-REINVESTED>                                  3
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<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                         (70)
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<OVERDIST-NET-GAINS-PRIOR>                           0
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<GROSS-EXPENSE>                                     37
<AVERAGE-NET-ASSETS>                              5969
<PER-SHARE-NAV-BEGIN>                            10.14
<PER-SHARE-NII>                                    .29
<PER-SHARE-GAIN-APPREC>                         (.044)
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<PER-SHARE-NAV-END>                              10.09
<EXPENSE-RATIO>                                   1.53
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<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 041
   <NAME> MFR GLOBAL HIGH YIELD, CLASS A
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                             6012
<INVESTMENTS-AT-VALUE>                            6003
<RECEIVABLES>                                      670
<ASSETS-OTHER>                                      20
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<TOTAL-ASSETS>                                    6693
<PAYABLE-FOR-SECURITIES>                           480
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           31
<TOTAL-LIABILITIES>                                511
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          6097
<SHARES-COMMON-STOCK>                              449
<SHARES-COMMON-PRIOR>                              339
<ACCUMULATED-NII-CURRENT>                          132
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           (35)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                          (12)
<NET-ASSETS>                                      6182
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  280
<OTHER-INCOME>                                     (4)
<EXPENSES-NET>                                      53
<NET-INVESTMENT-INCOME>                            223
<REALIZED-GAINS-CURRENT>                            64
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<NET-CHANGE-FROM-OPS>                              131
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          154
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<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             98
<NUMBER-OF-SHARES-REDEEMED>                          3
<SHARES-REINVESTED>                                 15
<NET-CHANGE-IN-ASSETS>                            1069
<ACCUMULATED-NII-PRIOR>                            117
<ACCUMULATED-GAINS-PRIOR>                        (100)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               20
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     79
<AVERAGE-NET-ASSETS>                              5511
<PER-SHARE-NAV-BEGIN>                            10.36
<PER-SHARE-NII>                                    .65
<PER-SHARE-GAIN-APPREC>                          (.43)
<PER-SHARE-DIVIDEND>                               .39
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.19
<EXPENSE-RATIO>                                    1.9
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 042
   <NAME> MFR GLOBAL HIGH YIELD, CLASS B
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                             6012
<INVESTMENTS-AT-VALUE>                            6003
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<PAYABLE-FOR-SECURITIES>                           480
<SENIOR-LONG-TERM-DEBT>                              0
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<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          6097
<SHARES-COMMON-STOCK>                              157
<SHARES-COMMON-PRIOR>                              148
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<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                           (35)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                          (12)
<NET-ASSETS>                                      6182
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                                  280
<OTHER-INCOME>                                     (4)
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<REALIZED-GAINS-CURRENT>                            64
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<DISTRIBUTIONS-OF-INCOME>                           54
<DISTRIBUTIONS-OF-GAINS>                             0
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<NUMBER-OF-SHARES-SOLD>                              4
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  5
<NET-CHANGE-IN-ASSETS>                              66
<ACCUMULATED-NII-PRIOR>                            117
<ACCUMULATED-GAINS-PRIOR>                        (100)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               20
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     79
<AVERAGE-NET-ASSETS>                              5511
<PER-SHARE-NAV-BEGIN>                            10.41
<PER-SHARE-NII>                                    .64
<PER-SHARE-GAIN-APPREC>                         (.472)
<PER-SHARE-DIVIDEND>                              .358
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.22
<EXPENSE-RATIO>                                   1.96
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 051
   <NAME> HIGH YIELD, CLASS A
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                             6495
<INVESTMENTS-AT-VALUE>                            6721
<RECEIVABLES>                                      138
<ASSETS-OTHER>                                     347
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    7206
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           12
<TOTAL-LIABILITIES>                                 12
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          6971
<SHARES-COMMON-STOCK>                              262
<SHARES-COMMON-PRIOR>                              181
<ACCUMULATED-NII-CURRENT>                            1
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            (4)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                           226
<NET-ASSETS>                                      7194
<DIVIDEND-INCOME>                                   15
<INTEREST-INCOME>                                  271
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      41
<NET-INVESTMENT-INCOME>                            245
<REALIZED-GAINS-CURRENT>                            33
<APPREC-INCREASE-CURRENT>                           79
<NET-CHANGE-FROM-OPS>                              357
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          139
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             79
<NUMBER-OF-SHARES-REDEEMED>                          7
<SHARES-REINVESTED>                                  9
<NET-CHANGE-IN-ASSETS>                            1291
<ACCUMULATED-NII-PRIOR>                              1
<ACCUMULATED-GAINS-PRIOR>                         (37)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               17
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     57
<AVERAGE-NET-ASSETS>                              6333
<PER-SHARE-NAV-BEGIN>                            15.32
<PER-SHARE-NII>                                    .55
<PER-SHARE-GAIN-APPREC>                           .237
<PER-SHARE-DIVIDEND>                              .557
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.55
<EXPENSE-RATIO>                                    .88
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 052
   <NAME> HIGH YIELD, CLASS B
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                             6495
<INVESTMENTS-AT-VALUE>                            6721
<RECEIVABLES>                                      138
<ASSETS-OTHER>                                     347
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    7206
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                           12
<TOTAL-LIABILITIES>                                 12
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          6971
<SHARES-COMMON-STOCK>                              201
<SHARES-COMMON-PRIOR>                              177
<ACCUMULATED-NII-CURRENT>                            1
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                            (4)
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                           226
<NET-ASSETS>                                      7194
<DIVIDEND-INCOME>                                   15
<INTEREST-INCOME>                                  271
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                      41
<NET-INVESTMENT-INCOME>                            245
<REALIZED-GAINS-CURRENT>                            33
<APPREC-INCREASE-CURRENT>                           79
<NET-CHANGE-FROM-OPS>                              357
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                          106
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             17
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  7
<NET-CHANGE-IN-ASSETS>                             404
<ACCUMULATED-NII-PRIOR>                              1
<ACCUMULATED-GAINS-PRIOR>                         (37)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                               17
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                     57
<AVERAGE-NET-ASSETS>                              6333
<PER-SHARE-NAV-BEGIN>                            15.32
<PER-SHARE-NII>                                    .55
<PER-SHARE-GAIN-APPREC>                           .237
<PER-SHARE-DIVIDEND>                              .557
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              15.55
<EXPENSE-RATIO>                                    .88
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 061
   <NAME> MFR EMERGING MARKETS TOTAL RETURN, CLASS A
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   2-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             MAY-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                              906
<INVESTMENTS-AT-VALUE>                             926
<RECEIVABLES>                                       39
<ASSETS-OTHER>                                      64
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    1029
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            5
<TOTAL-LIABILITIES>                                  5
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          1000
<SHARES-COMMON-STOCK>                               50
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            4
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            20
<NET-ASSETS>                                      1024
<DIVIDEND-INCOME>                                    2
<INTEREST-INCOME>                                    5
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       3
<NET-INVESTMENT-INCOME>                              4
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                           20
<NET-CHANGE-FROM-OPS>                               23
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             50
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                             512
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                1
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      9
<AVERAGE-NET-ASSETS>                              1010
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                    .04
<PER-SHARE-GAIN-APPREC>                            .20
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.24
<EXPENSE-RATIO>                                    2.0
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 062
   <NAME> MFR EMERGING MARKETS TOTAL RETURN, CLASS B
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   2-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             MAY-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                              906
<INVESTMENTS-AT-VALUE>                             926
<RECEIVABLES>                                       39
<ASSETS-OTHER>                                      64
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    1029
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            5
<TOTAL-LIABILITIES>                                  5
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          1000
<SHARES-COMMON-STOCK>                               50
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            4
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            20
<NET-ASSETS>                                      1024
<DIVIDEND-INCOME>                                    2
<INTEREST-INCOME>                                    5
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       3
<NET-INVESTMENT-INCOME>                              4
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                           20
<NET-CHANGE-FROM-OPS>                               23
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             50
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                             511
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                1
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      9
<AVERAGE-NET-ASSETS>                              1010
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                    .04
<PER-SHARE-GAIN-APPREC>                            .19
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.23
<EXPENSE-RATIO>                                   2.75
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 071
   <NAME> MFR GLOBAL ASSET ALLOCATION, CLASS A
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   2-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             MAY-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                              912
<INVESTMENTS-AT-VALUE>                             940
<RECEIVABLES>                                       34
<ASSETS-OTHER>                                     113
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    1087
<PAYABLE-FOR-SECURITIES>                            50
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            5
<TOTAL-LIABILITIES>                                 55
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          1000
<SHARES-COMMON-STOCK>                               50
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            3
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            29
<NET-ASSETS>                                      1032
<DIVIDEND-INCOME>                                    3
<INTEREST-INCOME>                                    3
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       3
<NET-INVESTMENT-INCOME>                              3
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                           29
<NET-CHANGE-FROM-OPS>                               32
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             50
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                             516
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                1
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      9
<AVERAGE-NET-ASSETS>                              1011
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                    .04
<PER-SHARE-GAIN-APPREC>                            .28
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.32
<EXPENSE-RATIO>                                   2.00
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000088498
<NAME> SECURITY INCOME FUND
<SERIES>
   <NUMBER> 072
   <NAME> MFR GLOBAL ASSET ALLOCATION, CLASS B
<MULTIPLIER> 1000
<CURRENCY> US DOLLARS
       
<S>                             <C>
<PERIOD-TYPE>                   2-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             MAY-01-1997
<PERIOD-END>                               JUN-30-1997
<EXCHANGE-RATE>                                      1
<INVESTMENTS-AT-COST>                              912
<INVESTMENTS-AT-VALUE>                             940
<RECEIVABLES>                                       34
<ASSETS-OTHER>                                     113
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                                    1087
<PAYABLE-FOR-SECURITIES>                            50
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                            5
<TOTAL-LIABILITIES>                                 55
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                          1000
<SHARES-COMMON-STOCK>                               50
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            3
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                              0
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                            29
<NET-ASSETS>                                      1032
<DIVIDEND-INCOME>                                    3
<INTEREST-INCOME>                                    3
<OTHER-INCOME>                                       0
<EXPENSES-NET>                                       3
<NET-INVESTMENT-INCOME>                              3
<REALIZED-GAINS-CURRENT>                             0
<APPREC-INCREASE-CURRENT>                           29
<NET-CHANGE-FROM-OPS>                               32
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                             50
<NUMBER-OF-SHARES-REDEEMED>                          0
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                             516
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                                1
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                                      9
<AVERAGE-NET-ASSETS>                              1011
<PER-SHARE-NAV-BEGIN>                            10.00
<PER-SHARE-NII>                                    .03
<PER-SHARE-GAIN-APPREC>                            .28
<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              10.31
<EXPENSE-RATIO>                                   2.75
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>


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