<PAGE> PAGE 1
000 A000000 03/31/2000
000 C000000 0001015852
000 D000000 N
000 E000000 F
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 BERGER/BIAM WORLDWIDE PORTFOLIOS TRUST
001 B000000 811-07667
001 C000000 3033290200
002 A000000 210 UNIVERSITY BLVD, STE 900
002 B000000 DENVER
002 C000000 CO
002 D010000 80206
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 1
007 C010100 1
007 C020100 BERGER/BIAM INTERNATIONAL PORTFOLIO
007 C030100 N
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 18
019 C00AA00 BERGERFUND
020 A000001 WARBURG
020 C000001 28
020 A000002 MORGAN STANLEY
020 C000002 16
020 A000003 GOLDMAN SACHS
020 C000003 15
020 A000004 CREDIT SUISSE
020 C000004 15
020 A000005 SALOMON SMITH BARNEY
020 C000005 12
020 A000006 DEUTSCHE BANK
020 C000006 12
020 A000007 HSBC
<PAGE> PAGE 2
020 C000007 9
020 A000008 INB BARING SECURITIES
020 C000008 6
020 A000009 KLEINWORT BENSON
020 C000009 5
020 A000010 ABN AMRO
020 C000010 5
021 000000 144
022 A000001 STATE STREET BANK
022 B000001 04-1867445
022 C000001 1028810
022 D000001 0
022 A000002 GOLDMAN SACHS & COMPANY
022 C000002 4933
022 D000002 0
022 A000003 DEUTSCHE BANK SECURITIES CORP.
022 C000003 970
022 D000003 0
022 A000004 ABN AMRO
022 C000004 316
022 D000004 0
022 A000005 BANK JULIUS BAER
022 C000005 242
022 D000005 0
022 A000006 DRESDNER BANK
022 C000006 0
022 D000006 10
022 C000007 0
022 D000007 0
022 C000008 0
022 D000008 0
022 C000009 0
022 D000009 0
022 C000010 0
022 D000010 0
023 C000000 1035270
023 D000000 10
024 00AA00 Y
025 A00AA01 ABN AMRO HOLDINGS NV
025 C00AA01 E
025 D00AA01 3466
025 D00AA02 0
025 D00AA03 0
025 D00AA04 0
025 D00AA05 0
025 D00AA06 0
025 D00AA07 0
025 D00AA08 0
026 A000000 N
026 B000000 Y
026 C000000 N
<PAGE> PAGE 3
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 Y
028 A01AA00 20287
028 A02AA00 0
028 A03AA00 0
028 A04AA00 20001
028 B01AA00 19241
028 B02AA00 0
028 B03AA00 0
028 B04AA00 18777
028 C01AA00 26226
028 C02AA00 0
028 C03AA00 0
028 C04AA00 27938
028 D01AA00 21988
028 D02AA00 0
028 D03AA00 0
028 D04AA00 22491
028 E01AA00 50841
028 E02AA00 0
028 E03AA00 0
028 E04AA00 41708
028 F01AA00 51758
028 F02AA00 0
028 F03AA00 0
028 F04AA00 42053
028 G01AA00 190341
028 G02AA00 0
028 G03AA00 0
028 G04AA00 172968
028 H00AA00 0
029 00AA00 N
030 A00AA00 0
030 B00AA00 0.00
030 C00AA00 0.00
031 A00AA00 0
031 B00AA00 0
032 00AA00 0
033 00AA00 0
034 00AA00 N
035 00AA00 0
036 B00AA00 0
037 00AA00 N
038 00AA00 0
039 00AA00 N
040 00AA00 N
<PAGE> PAGE 4
041 00AA00 N
042 A00AA00 0
042 B00AA00 0
042 C00AA00 0
042 D00AA00 0
042 E00AA00 0
042 F00AA00 0
042 G00AA00 0
042 H00AA00 0
043 00AA00 0
044 00AA00 0
045 00AA00 Y
046 00AA00 N
047 00AA00 Y
048 00AA00 0.900
048 A01AA00 0
048 A02AA00 0.000
048 B01AA00 0
048 B02AA00 0.000
048 C01AA00 0
048 C02AA00 0.000
048 D01AA00 0
048 D02AA00 0.000
048 E01AA00 0
048 E02AA00 0.000
048 F01AA00 0
048 F02AA00 0.000
048 G01AA00 0
048 G02AA00 0.000
048 H01AA00 0
048 H02AA00 0.000
048 I01AA00 0
048 I02AA00 0.000
048 J01AA00 0
048 J02AA00 0.000
048 K01AA00 0
048 K02AA00 0.000
049 00AA00 N
050 00AA00 N
051 00AA00 N
052 00AA00 N
053 A00AA00 Y
053 B00AA00 Y
054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 Y
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 N
054 H00AA00 Y
<PAGE> PAGE 5
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 N
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 N
055 A00AA00 N
055 B00AA00 N
056 00AA00 Y
057 00AA00 N
070 A01AA00 Y
070 A02AA00 Y
070 B01AA00 N
070 B02AA00 N
070 C01AA00 N
070 C02AA00 N
070 D01AA00 N
070 D02AA00 N
070 E01AA00 N
070 E02AA00 N
070 F01AA00 N
070 F02AA00 N
070 G01AA00 N
070 G02AA00 N
070 H01AA00 N
070 H02AA00 N
070 I01AA00 N
070 I02AA00 N
070 J01AA00 Y
070 J02AA00 N
070 K01AA00 Y
070 K02AA00 N
070 L01AA00 Y
070 L02AA00 Y
070 M01AA00 Y
070 M02AA00 Y
070 N01AA00 Y
070 N02AA00 Y
070 O01AA00 Y
070 O02AA00 N
070 P01AA00 Y
070 P02AA00 N
070 Q01AA00 N
070 Q02AA00 N
070 R01AA00 N
070 R02AA00 N
077 A000000 Y
077 Q010000 Y
078 000000 N
080 C00AA00 0
<PAGE> PAGE 6
081 B00AA00 0
082 B00AA00 0
083 B00AA00 0
084 B00AA00 0
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
008 A000101 BBOI WORLDWIDE LLC
008 B000101 A
008 C000101 801-52264
008 D010101 DENVER
008 D020101 CO
008 D030101 80206
008 A000102 BANK OF IRELAND ASSET MANAGEMENT (U.S.) LTD
008 B000102 S
008 C000102 801-29606
008 D010102 GREENWICH
008 D020102 CT
008 D030102 06830
012 A000101 DST SYSTEMS, INC.
012 B000101 84-00448
012 C010101 KANSAS CITY
012 C020101 MO
012 C030101 64141
013 A000101 PRICEWATERHOUSECOOPERS LLP
013 B010101 DENVER
013 B020101 CO
013 B030101 80202
014 A000101 DST SECURITIES, INC.
014 B000101 8-24385
015 A000101 STATE STREET BANK & TRUST
015 B000101 C
015 C010101 KANSAS CITY
015 C020101 MO
015 C030101 64105
015 E010101 X
058 A000100 N
059 000100 Y
060 A000100 Y
060 B000100 Y
061 000100 0
062 A000100 N
<PAGE> PAGE 7
062 B000100 0.0
062 C000100 0.0
062 D000100 0.0
062 E000100 0.0
062 F000100 0.0
062 G000100 0.0
062 H000100 0.0
062 I000100 0.0
062 J000100 0.0
062 K000100 0.0
062 L000100 0.0
062 M000100 0.0
062 N000100 0.0
062 O000100 0.0
062 P000100 0.0
062 Q000100 0.0
062 R000100 0.0
063 A000100 0
063 B000100 0.0
066 A000100 Y
066 B000100 N
066 C000100 N
066 D000100 Y
066 E000100 N
066 F000100 N
066 G000100 N
067 000100 N
068 A000100 N
068 B000100 Y
069 000100 N
071 A000100 63921
071 B000100 48563
071 C000100 293169
071 D000100 17
072 A000100 6
072 B000100 235
072 C000100 1555
072 D000100 0
072 E000100 0
072 F000100 1382
072 G000100 0
072 H000100 0
072 I000100 0
072 J000100 67
072 K000100 0
072 L000100 2
072 M000100 8
072 N000100 0
072 O000100 0
072 P000100 0
072 Q000100 32
<PAGE> PAGE 8
072 R000100 15
072 S000100 2
072 T000100 0
072 U000100 0
072 V000100 0
072 W000100 4
072 X000100 1512
072 Y000100 4
072 Z000100 281
072AA000100 19442
072BB000100 0
072CC010100 40845
072CC020100 0
072DD010100 0
072DD020100 0
072EE000100 0
073 A010100 0.0000
073 A020100 0.0000
073 B000100 0.0000
073 C000100 0.0000
074 A000100 2526
074 B000100 6261
074 C000100 0
074 D000100 0
074 E000100 0
074 F000100 331800
074 G000100 0
074 H000100 0
074 I000100 0
074 J000100 697
074 K000100 0
074 L000100 5325
074 M000100 25965
074 N000100 372574
074 O000100 1796
074 P000100 261
074 Q000100 0
074 R010100 0
074 R020100 0
074 R030100 0
074 R040100 27364
074 S000100 0
074 T000100 343153
074 U010100 0
074 U020100 0
074 V010100 0.00
074 V020100 0.00
074 W000100 0.0000
074 X000100 3
074 Y000100 25965
075 A000100 0
<PAGE> PAGE 9
075 B000100 306272
076 000100 0.00
SIGNATURE LANCE CAMPBELL
TITLE MGR. FUND ACCOUNTING
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0001015852
<NAME> BERGER/BIAM WORLDWIDE PORTFOLIOS TRUST
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-2000
<PERIOD-START> OCT-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 246967613
<INVESTMENTS-AT-VALUE> 338061429
<RECEIVABLES> 6021243
<ASSETS-OTHER> 25964940
<OTHER-ITEMS-ASSETS> 2526174
<TOTAL-ASSETS> 372573786
<PAYABLE-FOR-SECURITIES> 1795678
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 27625225
<TOTAL-LIABILITIES> 29420903
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 0
<SHARES-COMMON-STOCK> 0
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 343152883
<DIVIDEND-INCOME> 1554581
<INTEREST-INCOME> 234590
<OTHER-INCOME> 480
<EXPENSES-NET> 1508506
<NET-INVESTMENT-INCOME> 281145
<REALIZED-GAINS-CURRENT> 19441598
<APPREC-INCREASE-CURRENT> 40844946
<NET-CHANGE-FROM-OPS> 60567689
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 0
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 77941513
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1381557
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1512321
<AVERAGE-NET-ASSETS> 306272025
<PER-SHARE-NAV-BEGIN> 0
<PER-SHARE-NII> 0
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 0
<EXPENSE-RATIO> 0.98
</TABLE>