<PAGE> PAGE 1
000 B000000 12/31/1999
000 C000000 0000756742
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 ALLMERICA INVESTMENT TRUST
001 B000000 811-4138
001 C000000 5088553498
002 A000000 440 LINCOLN STREET
002 B000000 WORCESTER
002 C000000 MA
002 D010000 01653
002 D020000 1959
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 14
007 C010100 1
007 C020100 GROWTH FUND
007 C030100 N
007 C010200 2
007 C020200 INVESTMENT GRADE INCOME FUND
007 C030200 N
007 C010300 3
007 C020300 MONEY MARKET FUND
007 C030300 N
007 C010400 4
007 C020400 EQUITY INDEX FUND
007 C030400 N
007 C010500 5
007 C020500 GOVERNMENT BOND FUND
007 C030500 N
007 C010600 6
007 C020600 SELECT GROWTH AND INCOME FUND
007 C030600 N
007 C010700 7
007 C020700 SELECT GROWTH FUND
007 C030700 N
007 C010800 8
007 C020800 SELECT AGGRESSIVE GROWTH FUND
007 C030800 N
007 C010900 9
007 C020900 SELECT INCOME FUND
007 C030900 N
007 C011000 10
<PAGE> PAGE 2
007 C021000 SELECT VALUE OPPORTUNITY
007 C031000 N
007 C011100 11
007 C021100 SELECT INTERNATIONAL EQUITY FUND
007 C031100 N
007 C011200 12
007 C021200 SELECT CAPITAL APPRECIATION FUND
007 C031200 N
007 C011300 13
007 C021300 SELECT EMERGING MARKETS FUND
007 C031300 N
007 C011400 14
007 C021400 SELECT STRATEGIC GROWTH FUND
007 C031400 N
007 C011500 15
007 C011600 16
007 C011700 17
007 C011800 18
007 C011900 19
007 C012000 20
007 C012100 21
007 C012200 22
007 C012300 23
007 C012400 24
007 C012500 25
007 C012600 26
007 C012700 27
007 C012800 28
007 C012900 29
007 C013000 30
007 C013100 31
007 C013200 32
007 C013300 33
007 C013400 34
007 C013500 35
007 C013600 36
007 C013700 37
007 C013800 38
007 C013900 39
007 C014000 40
007 C014100 41
007 C014200 42
007 C014300 43
007 C014400 44
007 C014500 45
007 C014600 46
007 C014700 47
007 C014800 48
007 C014900 49
007 C015000 50
010 A00AA01 INVESTORS BANK & TRUST COMPANY
<PAGE> PAGE 3
010 B00AA01 85-720
010 C01AA01 BOSTON
010 C02AA01 MA
010 C03AA01 02116
010 A00AA02 FIRST DATA INVESTOR SERVICES GROUP, INC.
010 B00AA02 84-1761
010 C01AA02 WESTBOROUGH
010 C02AA02 MA
010 C03AA02 01581
011 A00AA01 ALLMERICA INVESTMENTS, INC.
011 B00AA01 8-14716
011 C01AA01 WORCESTER
011 C02AA01 MA
011 C03AA01 01653
011 C04AA01 1959
013 A00AA01 PRICEWATERHOUSECOOPERS, LLP
013 B01AA01 BOSTON
013 B02AA01 MA
013 B03AA01 02110
014 A00AA01 ALLMERICA INVESTMENTS, INC.
014 B00AA01 8-14716
015 A00AA01 INVESTORS BANK & TRUST COMPANY
015 B00AA01 C
015 C01AA01 BOSTON
015 C02AA01 MA
015 C03AA01 02116
015 E01AA01 X
015 A00AA02 CITIBANK, N.A. (ARGENTINA)
015 B00AA02 S
015 C01AA02 BUENOS AIRES
015 D01AA02 ARGENTINA
015 E04AA02 X
015 A00AA03 NATIONAL AUSTRALIA BANK LIMITED
015 B00AA03 S
015 C01AA03 MELBOURNE
015 D01AA03 AUSTRALIA
015 E04AA03 X
015 A00AA04 BANKAUSTRIA AG
015 B00AA04 S
015 C01AA04 -
015 D01AA04 AUSTRIA
015 E04AA04 X
015 A00AA05 THE BRITISH BANK OF THE MIDDLE EAST
015 B00AA05 S
015 C01AA05 -
015 D01AA05 BAHRAIN
015 E04AA05 X
015 A00AA06 STANDARD CHARTERED BANK, DHAKA
015 B00AA06 S
015 C01AA06 -
015 D01AA06 BANGLADESH
<PAGE> PAGE 4
015 E04AA06 X
015 A00AA07 PARIBAS
015 B00AA07 S
015 C01AA07 -
015 D01AA07 BELGIUM
015 E04AA07 X
015 A00AA08 THE BANK OF BERMUDA LIMITED
015 B00AA08 S
015 C01AA08 -
015 D01AA08 BERMUDA
015 E04AA08 X
015 A00AA09 BARCLAYS BANK OF BOTSWANA LTD.
015 B00AA09 S
015 C01AA09 -
015 D01AA09 BOTSWANA
015 E04AA09 X
015 A00AA10 BANKBOSTON BRAZIL
015 B00AA10 S
015 C01AA10 -
015 D01AA10 BRAZIL
015 E04AA10 X
015 A00AA11 ING BANK
015 B00AA11 S
015 C01AA11 -
015 D01AA11 BULGARIA
015 E04AA11 X
015 A00AA12 ROYAL BANK OF CANADA
015 B00AA12 S
015 C01AA12 -
015 D01AA12 CANADA
015 E04AA12 X
015 A00AA13 BANKBOSTON, SANTIAGO
015 B00AA13 S
015 C01AA13 -
015 D01AA13 CHILE
015 E04AA13 X
015 A00AA14 STANDARD CHARTERED BANK, SHANGHAI
015 B00AA14 S
015 C01AA14 -
015 D01AA14 CHINA
015 E04AA14 X
015 A00AA15 STANDARD CHARTERED BANK, SHENZEN
015 B00AA15 S
015 C01AA15 -
015 D01AA15 CHINA
015 E04AA15 X
015 A00AA16 CITITRUST COLUMBIA S.A. (COLUMBIA)
015 B00AA16 S
015 C01AA16 -
015 D01AA16 COLUMBIA
015 E04AA16 X
<PAGE> PAGE 5
015 A00AA17 BANKAUSTRIA CREDITANSTALT
015 B00AA17 S
015 C01AA17 -
015 D01AA17 CROATIA
015 E04AA17 X
015 A00AA18 CITIBANK, A.S.
015 B00AA18 S
015 C01AA18 -
015 D01AA18 CZECH REPUBLIC
015 E04AA18 X
015 A00AA19 UNIBANK, A.S.
015 B00AA19 S
015 C01AA19 -
015 D01AA19 DENMARK
015 E04AA19 X
015 A00AA20 CITIBANK, N.A. (ECUADOR)
015 B00AA20 S
015 C01AA20 -
015 D01AA20 ECUADOR
015 E04AA20 X
015 A00AA21 CITIBANK, N.A. (EGYPT)
015 B00AA21 S
015 C01AA21 -
015 D01AA21 EGYPT
015 E04AA21 X
015 A00AA22 HANSABANK
015 B00AA22 S
015 C01AA22 -
015 D01AA22 ESTONIA
015 E04AA22 X
015 A00AA23 EUROCLEAR / MERITA BANK
015 B00AA23 S
015 C01AA23 -
015 D01AA23 FINLAND
015 E04AA23 X
015 A00AA24 PARIBAS
015 B00AA24 S
015 C01AA24 -
015 D01AA24 FRANCE
015 E04AA24 X
015 A00AA25 EUROCLEAR / DEUTSCHE BANK A.G.
015 B00AA25 S
015 C01AA25 -
015 D01AA25 GERMANY
015 E04AA25 X
015 A00AA26 BARCLAYS BANK OF GHANA LTD.
015 B00AA26 S
015 C01AA26 -
015 D01AA26 GHANA
015 E04AA26 X
015 A00AA27 PARIBAS
<PAGE> PAGE 6
015 B00AA27 S
015 C01AA27 -
015 D01AA27 GREECE
015 E04AA27 X
015 A00AA28 STANDARD CHARTERED BANK, HONG KONG
015 B00AA28 S
015 C01AA28 -
015 D01AA28 HONG KONG
015 E04AA28 X
015 A00AA29 CITIBANK BUDAPEST RT
015 B00AA29 S
015 C01AA29 -
015 D01AA29 HUNGARY
015 E04AA29 X
015 A00AA30 ANZ GRINDLAYS BANK
015 B00AA30 S
015 C01AA30 -
015 D01AA30 INDIA
015 E04AA30 X
015 A00AA31 STANDARD CHARTERED BANK, JAKARTA
015 B00AA31 S
015 C01AA31 -
015 D01AA31 INDONESIA
015 E04AA31 X
015 A00AA32 BANK OF IRELAND SECURITIES SERVICES
015 B00AA32 S
015 C01AA32 -
015 D01AA32 IRELAND
015 E04AA32 X
015 A00AA33 BANK HAPOALIM B.M.
015 B00AA33 S
015 C01AA33 -
015 D01AA33 ISRAEL
015 E04AA33 X
015 A00AA34 PARIBAS
015 B00AA34 S
015 C01AA34 -
015 D01AA34 ITALY
015 E04AA34 X
015 A00AA35 STANDARD CHARTERED BANK, TOKYO
015 B00AA35 S
015 C01AA35 -
015 D01AA35 JAPAN
015 E04AA35 X
015 A00AA36 CITIBANK, N.A. (JORDAN)
015 B00AA36 S
015 C01AA36 -
015 D01AA36 JORDAN
015 E04AA36 X
015 A00AA37 ABN AMRO
015 B00AA37 S
<PAGE> PAGE 7
015 C01AA37 -
015 D01AA37 KAZAKSTAN
015 E04AA37 X
015 A00AA38 BARCLAYS BANK OF KENYA LTD.
015 B00AA38 S
015 C01AA38 -
015 D01AA38 KENYA
015 E04AA38 X
015 A00AA39 STANDARD CHARTERED BANK, SEOUL
015 B00AA39 S
015 C01AA39 -
015 D01AA39 KOREA
015 E04AA39 X
015 A00AA40 SOCIETE GENERALE
015 B00AA40 S
015 C01AA40 -
015 D01AA40 LATVIA
015 E04AA40 X
015 A00AA41 HONGKONG SHANGHAI BANKING CORP.
015 B00AA41 S
015 C01AA41 -
015 D01AA41 LEBANON
015 E04AA41 X
015 A00AA42 VILNIAUS BANKAS AB
015 B00AA42 S
015 C01AA42 -
015 D01AA42 LITHUANIA
015 E04AA42 X
015 A00AA43 EUROCLEAR/BANQUE ET CAISSE D'EPARGNE DE LETAT
015 B00AA43 S
015 C01AA43 -
015 D01AA43 LUXEMBOURG
015 E04AA43 X
015 A00AA44 STD CHARTER BANK MALAYSIA BERHAD,KUALA LUMPUR
015 B00AA44 S
015 C01AA44 -
015 D01AA44 MALAYSIA
015 E04AA44 X
015 A00AA45 HONGKONG SHANGHAI BANKING CORP.
015 B00AA45 S
015 C01AA45 -
015 D01AA45 MAURITIUS
015 E04AA45 X
015 A00AA46 BANCOMER, S.A.
015 B00AA46 S
015 C01AA46 -
015 D01AA46 MEXICO
015 E04AA46 X
015 A00AA47 CITIBANK, MAGHREB
015 B00AA47 S
015 C01AA47 -
<PAGE> PAGE 8
015 D01AA47 MOROCCO
015 E04AA47 X
015 A00AA48 MEESPIERSON
015 B00AA48 S
015 C01AA48 -
015 D01AA48 NETHERLANDS
015 E04AA48 X
015 A00AA49 NATIONAL NOMINEES LIMITED
015 B00AA49 S
015 C01AA49 -
015 D01AA49 NEW ZEALAND
015 E04AA49 X
015 A00AA50 UNION BANK OF NORWAY
015 B00AA50 S
015 C01AA50 -
015 D01AA50 NORWAY
015 E04AA50 X
015 A00AA51 HONGKONG SHANGHAI BANKING CORP.
015 B00AA51 S
015 C01AA51 -
015 D01AA51 OMAN
015 E04AA51 X
015 A00AA52 STANDARD CHARTERED BANK, KARACHI
015 B00AA52 S
015 C01AA52 -
015 D01AA52 PAKISTAN
015 E04AA52 X
015 A00AA53 CITIBANK, N.A. (PERU)
015 B00AA53 S
015 C01AA53 -
015 D01AA53 PERU
015 E04AA53 X
015 A00AA54 STANDARD CHARTERED BANK, MANILA
015 B00AA54 S
015 C01AA54 -
015 D01AA54 PHILIPPINES
015 E04AA54 X
015 A00AA55 BANK POLSKA (PEKAO)
015 B00AA55 S
015 C01AA55 -
015 D01AA55 POLAND
015 E04AA55 X
015 A00AA56 CITIBANK PORTUGAL S.A.
015 B00AA56 S
015 C01AA56 -
015 D01AA56 PORTUGAL
015 E04AA56 X
015 A00AA57 BANKAUSTRIA SECURITIES S.A.
015 B00AA57 S
015 C01AA57 -
015 D01AA57 ROMANIA
<PAGE> PAGE 9
015 E04AA57 X
015 A00AA58 CREDIT SUISSE (MOSCOW) LTD.
015 B00AA58 S
015 C01AA58 -
015 D01AA58 RUSSIA
015 E04AA58 X
015 A00AA59 STANDARD CHARTERED BANK, SINGAPORE
015 B00AA59 S
015 C01AA59 -
015 D01AA59 SINGAPORE
015 E04AA59 X
015 A00AA60 CESKOSLOVENSKA OBCHODNA BANKA A.S.
015 B00AA60 S
015 C01AA60 -
015 D01AA60 SLOVAK REPUBLIC
015 E04AA60 X
015 A00AA61 BANK AUSTRIA D.D. LJUBLJANA
015 B00AA61 S
015 C01AA61 -
015 D01AA61 SLOVENIA
015 E04AA61 X
015 A00AA62 THE STANDARD BANK OF SOUTH AFRICA LIMITED
015 B00AA62 S
015 C01AA62 -
015 D01AA62 SOUTH AFRICA
015 E04AA62 X
015 A00AA63 PARIBAS
015 B00AA63 S
015 C01AA63 -
015 D01AA63 SPAIN
015 E04AA63 X
015 A00AA64 STANDARD CHARTERED BANK, COLUMBO
015 B00AA64 S
015 C01AA64 -
015 D01AA64 SRI LANKA
015 E04AA64 X
015 A00AA65 SVENSKA HANDELSBANKEN
015 B00AA65 S
015 C01AA65 -
015 D01AA65 SWEDEN
015 E04AA65 X
015 A00AA66 BANK LEU LTD.
015 B00AA66 S
015 C01AA66 -
015 D01AA66 SWITZERLAND
015 E04AA66 X
015 A00AA67 STANDARD CHARTERED BANK, TAIPEI
015 B00AA67 S
015 C01AA67 -
015 D01AA67 TAIWAN
015 E04AA67 X
<PAGE> PAGE 10
015 A00AA68 STANDARD CHARTERED BANK, BANGKOK
015 B00AA68 S
015 C01AA68 -
015 D01AA68 THAILAND
015 E04AA68 X
015 A00AA69 CITIBANK N.A. (TURKEY)
015 B00AA69 S
015 C01AA69 -
015 D01AA69 TURKEY
015 E04AA69 X
015 A00AA70 ING BANK
015 B00AA70 S
015 C01AA70 -
015 D01AA70 UKRAINE
015 E04AA70 X
015 A00AA71 MIDLAND BANK
015 B00AA71 S
015 C01AA71 -
015 D01AA71 UNITED KINGDOM
015 E04AA71 X
015 A00AA72 FIRST CHICAGO CLEARING CENTRE
015 B00AA72 S
015 C01AA72 -
015 D01AA72 UNITED KINGDOM
015 E04AA72 X
015 A00AA73 BANKBOSTON MONTEVIDEO
015 B00AA73 S
015 C01AA73 -
015 D01AA73 URUGUAY
015 E04AA73 X
015 A00AA74 CITIBANK, N.A. (CARACAS)
015 B00AA74 S
015 C01AA74 -
015 D01AA74 VENEZUELA
015 E04AA74 X
015 A00AA75 BARCLAYS BANK PLC
015 B00AA75 S
015 C01AA75 -
015 D01AA75 ZAMBIA
015 E04AA75 X
015 A00AA76 BARCLAYS BANK PLC
015 B00AA76 S
015 C01AA76 -
015 D01AA76 ZIMBABWE
015 E04AA76 X
018 00AA00 Y
019 A00AA00 Y
019 B00AA00 15
019 C00AA00 ALLMEFUNDS
020 A000001 PRUDENTIAL SECURITIES
020 B000001 22-2347336
<PAGE> PAGE 11
020 C000001 761
020 A000002 MORGAN STANLEY & CO., SALOMON, SMITH BARNEY
020 B000002 13-2655998
020 C000002 647
020 A000003 INVESTMENT TECHNOLOGY
020 B000003 95-2622900
020 C000003 573
020 A000004 CAPITAL INSTITUTIONAL SERVICES
020 B000004 75-1565705
020 C000004 564
020 A000005 GOLDMAN SACHS & CO.
020 B000005 13-5108880
020 C000005 440
020 A000006 LEHMAN BROTHERS INC.
020 B000006 13-2518466
020 C000006 393
020 A000007 MERRILL LYNCH, PIERCE, FENNER & SMITH
020 B000007 13-5674085
020 C000007 380
020 A000008 FIRST BOSTON CORP.
020 B000008 13-5659485
020 C000008 341
020 A000009 BEAR STEARNS & CO. INC
020 B000009 13-4946705
020 C000009 303
020 A000010 DONALDSON, LUFKIN, JENRETTE
020 B000010 13-2741729
020 C000010 263
021 000000 9128
022 A000001 SMITH BARNEY & CO., INC.
022 C000001 1313300
022 D000001 603499
022 A000002 STATE STREET BANK
022 B000002 13-5108880
022 C000002 900345
022 D000002 838340
022 A000003 GOLDMAN SACHS & CO.
022 B000003 04-1867445
022 C000003 1233318
022 D000003 449273
022 A000004 ASSOCIATES CORP. OF NORTH AMERICA
022 C000004 1457998
022 D000004 0
022 A000005 CREDIT SUISSE FIRST BOSTON
022 B000005 13-5659485
022 C000005 1273230
022 D000005 133054
022 A000006 MERRILL LYNCH, PIERCE FENNER & SMITH INC.
022 B000006 13-5674085
022 C000006 1177035
022 D000006 179063
<PAGE> PAGE 12
022 A000007 PAINE WEBBER INC.
022 B000007 13-2638166
022 C000007 623333
022 D000007 77575
022 A000008 LEHMAN BROTHERS HOLDINGS, INC.
022 B000008 13-2518466
022 C000008 585262
022 D000008 100386
022 A000009 CHASE SECURITIES & CHASE BANK
022 C000009 374258
022 D000009 71089
022 A000010 BA SECURITIES, INC.
022 B000010 95-3783486
022 C000010 170855
022 D000010 93882
023 C000000 12106528
023 D000000 3497042
026 A000000 N
026 B000000 Y
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 Y
026 G010000 N
026 G020000 Y
026 H000000 N
027 000000 Y
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
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
<PAGE> PAGE 13
043 00AA00 0
044 00AA00 0
054 A00AA00 Y
054 B00AA00 Y
054 C00AA00 N
054 D00AA00 N
054 E00AA00 N
054 F00AA00 N
054 G00AA00 Y
054 H00AA00 Y
054 I00AA00 N
054 J00AA00 Y
054 K00AA00 N
054 L00AA00 N
054 M00AA00 Y
054 N00AA00 N
054 O00AA00 Y
058 A00AA00 N
058 B00AA00 N
058 C00AA00 N
058 D00AA00 N
058 E00AA00 N
059 00AA00 Y
060 A00AA00 Y
060 B00AA00 Y
061 00AA00 0
077 A000000 Y
077 B000000 Y
077 D000000 Y
077 Q010000 Y
078 000000 N
080 A00AA00 UNDERWRITERS AT LLOYDS & OTHER LONDON COS.
080 C00AA00 23100
081 A00AA00 Y
081 B00AA00 6
082 A00AA00 Y
082 B00AA00 10
083 A00AA00 N
083 B00AA00 0
084 A00AA00 N
084 B00AA00 0
085 A00AA00 Y
085 B00AA00 N
086 A010000 0
086 A020000 0
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
<PAGE> PAGE 14
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
008 A000101 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B000101 A
008 C000101 801-44189
008 D010101 WORCESTER
008 D020101 MA
008 D030101 01653
008 D040101 1959
008 A000102 MILLER, ANDERSON & SHERRERD, LLP
008 B000102 S
008 C000102 801-10437
008 D010102 WEST CONSHOCKEN
008 D020102 PA
008 D030102 19428
024 000100 Y
025 A000101 DONALDSON, LUFKIN, JENRETTE, INC.
025 C000101 E
025 D000101 1292
025 A000102 LEHMAN BROTHERS
025 B000102 13-2518466
025 C000102 E
025 D000102 7673
025 A000103 MERRILL LYNCH
025 B000103 13-5674085
025 C000103 E
025 D000103 6321
025 A000104 STATE STREET CORP.
025 B000104 13-5108880
025 C000104 E
025 D000104 2411
025 D000105 0
025 D000106 0
025 D000107 0
025 D000108 0
028 A010100 2223
028 A020100 0
028 A030100 0
028 A040100 3986
028 B010100 4837
028 B020100 0
028 B030100 0
028 B040100 4021
028 C010100 7148
028 C020100 1886
028 C030100 0
028 C040100 7709
028 D010100 3880
028 D020100 0
<PAGE> PAGE 15
028 D030100 0
028 D040100 2876
028 E010100 1478
028 E020100 0
028 E030100 0
028 E040100 3731
028 F010100 2737
028 F020100 625
028 F030100 0
028 F040100 2707
028 G010100 22303
028 G020100 2511
028 G030100 0
028 G040100 25030
028 H000100 0
045 000100 Y
046 000100 N
047 000100 Y
048 000100 0.000
048 A010100 250000
048 A020100 0.600
048 B010100 250000
048 B020100 0.400
048 C010100 0
048 C020100 0.000
048 D010100 0
048 D020100 0.000
048 E010100 0
048 E020100 0.000
048 F010100 0
048 F020100 0.000
048 G010100 0
048 G020100 0.000
048 H010100 0
048 H020100 0.000
048 I010100 0
048 I020100 0.000
048 J010100 0
048 J020100 0.000
048 K010100 500000
048 K020100 0.350
049 000100 N
050 000100 N
051 000100 N
052 000100 N
053 A000100 N
055 A000100 N
055 B000100 N
056 000100 N
057 000100 N
062 A000100 N
<PAGE> PAGE 16
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 N
069 000100 N
070 A010100 Y
070 A020100 N
070 B010100 Y
070 B020100 N
070 C010100 Y
070 C020100 N
070 D010100 Y
070 D020100 N
070 E010100 Y
070 E020100 N
070 F010100 Y
070 F020100 N
070 G010100 Y
070 G020100 N
070 H010100 Y
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 N
070 K010100 Y
<PAGE> PAGE 17
070 K020100 Y
070 L010100 Y
070 L020100 Y
070 M010100 Y
070 M020100 N
070 N010100 Y
070 N020100 Y
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 N
070 Q010100 N
070 Q020100 N
070 R010100 N
070 R020100 N
071 A000100 1076230
071 B000100 1136348
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071 D000100 116
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072 I000100 0
072 J000100 249
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072 M000100 19
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<PAGE> PAGE 18
072EE000100 86927
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008 A000201 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B000201 A
008 C000201 801-44189
008 D010201 WORCESTER
008 D020201 MA
008 D030201 01653
008 D040201 1959
008 A000202 ALLMERICA ASSET MANAGEMENT, INC.
008 B000202 S
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008 D010202 WORCESTER
008 D020202 MA
008 D030202 01653
<PAGE> PAGE 19
008 D040202 1959
024 000200 Y
025 A000201 PAINE WEBBER GROUP, INC.
025 B000201 13-2638166
025 C000201 D
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025 A000202 BEAR STEARNS COS., INC.
025 B000202 13-4946705
025 C000202 D
025 D000202 6792
025 A000203 DONALDSON, LUFKIN & JENRETTE, INC.
025 B000203 13-2741729
025 C000203 D
025 D000203 3072
025 A000204 MORGAN STANLEY DEAN WITTER & CO.
025 B000204 13-2655998
025 C000204 D
025 D000204 2148
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025 C000205 D
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<PAGE> PAGE 20
028 G010200 6182
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050 000200 N
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<PAGE> PAGE 21
062 L000200 0.0
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063 B000200 14.9
064 A000200 N
064 B000200 N
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067 000200 N
068 A000200 N
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070 A020200 N
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070 C020200 N
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070 D020200 N
070 E010200 Y
070 E020200 N
070 F010200 N
070 F020200 N
070 G010200 Y
070 G020200 N
070 H010200 N
070 H020200 N
070 I010200 N
070 I020200 N
070 J010200 Y
070 J020200 Y
070 K010200 Y
070 K020200 Y
070 L010200 Y
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070 M010200 Y
070 M020200 N
070 N010200 Y
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070 O020200 N
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070 Q010200 N
070 Q020200 N
070 R010200 N
<PAGE> PAGE 22
070 R020200 N
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<PAGE> PAGE 23
074 J000200 0
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008 A000301 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B000301 A
008 C000301 801-44189
008 D010301 WORCESTER
008 D020301 MA
008 D030301 01653
008 D040301 1959
008 A000302 ALLMERICA ASSET MANAGEMENT, INC.
008 B000302 S
008 C000302 801-44189
008 D010302 WORCESTER
008 D020302 MA
008 D030302 01653
008 D040302 1959
024 000300 Y
025 A000301 PAINE WEBBER GROUP, INC.
025 B000301 13-2638166
025 C000301 D
025 D000301 18766
025 A000302 BEAR STEARNS COS., INC.
025 B000302 13-4946705
025 C000302 D
025 D000302 17581
025 A000303 GOLDMAN SACHS & CO.
025 B000303 13-5108880
025 C000303 D
025 D000303 16839
<PAGE> PAGE 24
025 A000304 LEHMAN BROTHERS HOLDINGS, INC.
025 B000304 13-2518466
025 C000304 D
025 D000304 14275
025 A000305 MORGAN STANLEY DEAN WITTER & CO.
025 B000305 13-2655998
025 C000305 D
025 D000305 14878
025 A000306 MERRILL LYNCH & CO., INC.
025 B000306 13-5674085
025 C000306 D
025 D000306 4916
025 A000307 DONALDSON, LUFKIN & JENRETTE, INC.
025 B000307 13-2741729
025 C000307 D
025 D000307 16843
025 A000308 SALOMON SMITH BARNEY HOLDINGS, INC.
025 C000308 D
025 D000308 1003
025 A000309 STATE STREET BANK
025 B000309 13-5108880
025 C000309 D
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<PAGE> PAGE 25
028 F020300 2405
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050 000300 N
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<PAGE> PAGE 26
062 I000300 37.3
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070 D010300 N
070 D020300 N
070 E010300 N
070 E020300 N
070 F010300 N
070 F020300 N
070 G010300 N
070 G020300 N
070 H010300 N
070 H020300 N
070 I010300 N
070 I020300 N
070 J010300 Y
070 J020300 Y
070 K010300 Y
070 K020300 Y
070 L010300 Y
070 L020300 Y
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<PAGE> PAGE 27
070 Q010300 N
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<PAGE> PAGE 28
074 G000300 0
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008 A000401 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B000401 A
008 C000401 801-44189
008 D010401 WORCESTER
008 D020401 MA
008 D030401 01653
008 D040401 1959
008 A000402 ALLMERICA ASSET MANAGEMENT, INC.
008 B000402 S
008 C000402 801-44189
008 D010402 WORCESTER
008 D020402 MA
008 D030402 01653
008 D040402 1959
024 000400 Y
025 A000401 MORGAN STANLEY DEAN WITTER & CO.
025 B000401 13-2655998
025 C000401 E
025 D000401 3914
025 A000402 MERRILL LYNCH & CO., INC.
025 B000402 13-5674085
025 C000402 E
025 D000402 1520
025 A000403 STATE STREET CORP.
<PAGE> PAGE 29
025 B000403 13-5108880
025 C000403 E
025 D000403 570
025 A000404 LEHMAN BROTHERS HOLDINGS, INC.
025 B000404 13-2518466
025 C000404 E
025 D000404 500
025 A000405 BEAR STEARNS COS., INC.
025 B000405 13-4946705
025 C000405 E
025 D000405 246
025 A000406 PAINE WEBBER GROUP, INC.
025 B000406 13-2638166
025 C000406 E
025 D000406 272
025 A000407 STATE STREET BANK
025 B000407 13-5108880
025 C000407 D
025 D000407 20546
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<PAGE> PAGE 30
028 D040400 873
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<PAGE> PAGE 31
062 C000400 0.0
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067 000400 N
068 A000400 N
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070 A010400 Y
070 A020400 N
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070 B020400 N
070 C010400 Y
070 C020400 N
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070 D020400 N
070 E010400 Y
070 E020400 N
070 F010400 Y
070 F020400 Y
070 G010400 Y
070 G020400 N
070 H010400 Y
070 H020400 N
070 I010400 N
070 I020400 N
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070 J020400 N
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070 K020400 Y
<PAGE> PAGE 32
070 L010400 Y
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070 Q020400 N
070 R010400 N
070 R020400 N
071 A000400 143386
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<PAGE> PAGE 33
073 A010400 0.0350
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076 000400 0.00
008 A000501 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B000501 A
008 C000501 801-44189
008 D010501 WORCESTER
008 D020501 MA
008 D030501 01653
008 D040501 1959
008 A000502 ALLMERICA ASSET MANAGEMENT, INC.
008 B000502 S
008 C000502 801-44189
008 D010502 WORCESTER
008 D020502 MA
008 D030502 01653
008 D040502 1959
<PAGE> PAGE 34
024 000500 Y
025 A000501 MORGAN STANLEY DEAN WITTER & CO.
025 B000501 13-2655998
025 C000501 D
025 D000501 1481
025 A000502 STATE STREET BANK
025 B000502 13-5108880
025 C000502 D
025 D000502 156
025 A000503 CHASE MANHATTAN CORP.
025 C000503 D
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<PAGE> PAGE 35
048 A020500 0.000
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062 A000500 Y
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<PAGE> PAGE 36
064 B000500 N
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<PAGE> PAGE 37
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<PAGE> PAGE 38
074 R030500 0
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008 A000601 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B000601 A
008 C000601 801-44189
008 D010601 WORCESTER
008 D020601 MA
008 D030601 01653
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008 A000602 J.P. MORGAN INVESTMENT MANAGEMENT INC.
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008 D010602 NEW YORK
008 D020602 NY
008 D030602 10020
024 000600 Y
025 A000601 BEAR STEARNS COS., INC.
025 B000601 13-4946705
025 C000601 E
025 D000601 838
025 A000602 GOLDMAN SACHS AND CO.
025 B000602 13-5108880
025 C000602 E
025 D000602 4643
025 A000603 STATE STREET BANK
025 B000603 13-5108880
025 C000603 D
025 D000603 342
025 A000604 MERILL LYNCH & CO., INC.
025 B000604 13-5674085
025 C000604 E
025 D000604 4300
025 A000605 PAINE WEBBER GROUP, INC.
025 B000605 13-2638166
025 C000605 E
025 D000605 737
025 A000606 DELETE
025 D000606 0
025 D000607 0
<PAGE> PAGE 39
025 D000608 0
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<PAGE> PAGE 40
048 I020600 0.000
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049 000600 N
050 000600 N
051 000600 N
052 000600 N
053 A000600 N
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055 B000600 N
056 000600 N
057 000600 N
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066 C000600 N
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069 000600 N
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070 B010600 Y
070 B020600 N
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070 C020600 N
<PAGE> PAGE 41
070 D010600 Y
070 D020600 N
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070 E020600 N
070 F010600 Y
070 F020600 Y
070 G010600 Y
070 G020600 N
070 H010600 Y
070 H020600 N
070 I010600 N
070 I020600 N
070 J010600 Y
070 J020600 Y
070 K010600 Y
070 K020600 Y
070 L010600 Y
070 L020600 Y
070 M010600 Y
070 M020600 N
070 N010600 Y
070 N020600 Y
070 O010600 Y
070 O020600 N
070 P010600 Y
070 P020600 N
070 Q010600 N
070 Q020600 N
070 R010600 N
070 R020600 N
071 A000600 1030095
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<PAGE> PAGE 42
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<PAGE> PAGE 43
075 B000600 728642
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008 A000701 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B000701 A
008 C000701 801-44189
008 D010701 WORCESTER
008 D020701 MA
008 D030701 01653
008 D040701 1959
008 A000702 PUTNAM INVESTMENT MANAGEMENT, INC.
008 B000702 S
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008 D010702 BOSTON
008 D020702 MA
008 D030702 02109
024 000700 Y
025 A000701 STATE STREET BANK
025 B000701 13-5108880
025 C000701 D
025 D000701 8200
025 A000702 MORGAN STANLEY DEAN WITTER & CO.
025 B000702 13-2655998
025 C000702 D
025 D000702 5817
025 A000703 PAINE WEBBER
025 B000703 13-2638166
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<PAGE> PAGE 44
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<PAGE> PAGE 45
062 F000700 0.0
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069 000700 N
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070 E020700 N
070 F010700 Y
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070 G010700 Y
070 G020700 N
070 H010700 Y
070 H020700 N
070 I010700 N
070 I020700 N
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070 J020700 N
070 K010700 Y
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070 L010700 Y
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070 M010700 Y
<PAGE> PAGE 46
070 M020700 N
070 N010700 Y
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070 O020700 N
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070 P020700 N
070 Q010700 N
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070 R010700 N
070 R020700 N
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<PAGE> PAGE 47
073 C000700 0.0000
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075 B000700 961222
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008 A000801 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,L.P.
008 B000801 A
008 C000801 801-44189
008 D010801 WORCESTER
008 D020801 MA
008 D030801 01653
008 D040801 1959
008 A000802 NICHOLAS-APPLEGATE CAPITAL MANAGEMENT,L.P.
008 B000802 S
008 C000802 801-21442
008 D010802 SAN DIEGO
008 D020802 CA
008 D030802 92101
024 000800 Y
025 A000801 ASSOCIATES CORP. OF NORTH AMERICA
025 C000801 D
025 D000801 6017
<PAGE> PAGE 48
025 D000802 0
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<PAGE> PAGE 49
048 F020800 0.000
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050 000800 N
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066 F000800 N
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067 000800 N
068 A000800 N
068 B000800 N
069 000800 N
<PAGE> PAGE 50
070 A010800 Y
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070 E020800 N
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070 I020800 N
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070 J020800 N
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070 Q020800 N
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070 R020800 N
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<PAGE> PAGE 51
072 L000800 162
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<PAGE> PAGE 52
074 V010800 3.41
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008 A000901 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B000901 A
008 C000901 801-44189
008 D010901 WORCESTER
008 D020901 MA
008 D030901 01653
008 D040901 1959
008 A000902 STANDISH, AYER & WOOD, INC.
008 B000902 S
008 C000902 801-584
008 D010902 BOSTON
008 D020902 MA
008 D030902 02111
024 000900 Y
025 A000901 MERRILL LYNCH & CO., INC.
025 B000901 13-5674085
025 C000901 D
025 D000901 1609
025 A000902 BEAR STEARNS COS., INC
025 B000902 13-4946705
025 C000902 D
025 D000902 1386
025 A000903 MORGAN STANLEY DEAN WITTER & CO.
025 B000903 13-2655998
025 C000903 D
025 D000903 1598
025 A000904 DELETE
025 D000904 0
025 A000905 DELETE
025 D000905 0
025 A000906 DELETE
025 D000906 0
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<PAGE> PAGE 53
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<PAGE> PAGE 54
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070 J020900 N
<PAGE> PAGE 55
070 K010900 Y
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<PAGE> PAGE 56
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008 A001001 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B001001 A
008 C001001 801-44189
008 D011001 WORCESTER
008 D021001 MA
008 D031001 01653
008 D041001 1959
008 A001002 CRAMER ROSENTHAL MCGLYNN, LLC
008 B001002 S
008 C001002 801-19007
008 D011002 NEW YORK
008 D021002 NY
<PAGE> PAGE 57
008 D031002 10020
024 001000 N
025 A001001 DELETE
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028 G011000 39719
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045 001000 Y
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<PAGE> PAGE 58
048 D021000 0.750
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048 I011000 0
048 I021000 0.000
048 J011000 0
048 J021000 0.000
048 K011000 750000
048 K021000 0.700
049 001000 N
050 001000 N
051 001000 N
052 001000 N
053 A001000 N
055 A001000 N
055 B001000 N
056 001000 N
057 001000 N
062 A001000 N
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062 D001000 0.0
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062 P001000 0.0
062 Q001000 0.0
062 R001000 0.0
063 A001000 0
063 B001000 0.0
066 A001000 Y
066 B001000 Y
066 C001000 N
066 D001000 N
066 E001000 N
066 F001000 N
066 G001000 N
<PAGE> PAGE 59
067 001000 N
068 A001000 N
068 B001000 N
069 001000 N
070 A011000 Y
070 A021000 N
070 B011000 Y
070 B021000 N
070 C011000 Y
070 C021000 N
070 D011000 Y
070 D021000 N
070 E011000 Y
070 E021000 N
070 F011000 Y
070 F021000 N
070 G011000 Y
070 G021000 N
070 H011000 Y
070 H021000 N
070 I011000 N
070 I021000 N
070 J011000 Y
070 J021000 N
070 K011000 Y
070 K021000 Y
070 L011000 Y
070 L021000 Y
070 M011000 Y
070 M021000 N
070 N011000 Y
070 N021000 Y
070 O011000 Y
070 O021000 N
070 P011000 Y
070 P021000 N
070 Q011000 N
070 Q021000 N
070 R011000 N
070 R021000 N
071 A001000 325525
071 B001000 267616
071 C001000 272255
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<PAGE> PAGE 60
072 H001000 0
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<PAGE> PAGE 61
074 S001000 0
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008 A001101 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B001101 A
008 C001101 801-44189
008 D011101 WORCESTER
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008 D031101 01653
008 D041101 1959
008 A001102 BANK OF IRELAND ASSET MANAGEMENT (U.S) LTD.
008 B001102 S
008 C001102 801-529606
008 D011102 GREENWICH
008 D021102 CT
008 D031102 06830
024 001100 N
025 A001101 DELETE
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<PAGE> PAGE 62
028 D031100 0
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049 001100 N
050 001100 N
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052 001100 N
053 A001100 N
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056 001100 N
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<PAGE> PAGE 63
062 B001100 0.0
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063 A001100 0
063 B001100 0.0
066 A001100 Y
066 B001100 N
066 C001100 Y
066 D001100 N
066 E001100 N
066 F001100 N
066 G001100 N
067 001100 N
068 A001100 N
068 B001100 Y
069 001100 N
070 A011100 Y
070 A021100 N
070 B011100 Y
070 B021100 N
070 C011100 Y
070 C021100 N
070 D011100 Y
070 D021100 N
070 E011100 Y
070 E021100 N
070 F011100 Y
070 F021100 N
070 G011100 Y
070 G021100 N
070 H011100 Y
070 H021100 N
070 I011100 N
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070 J011100 Y
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<PAGE> PAGE 64
070 K021100 Y
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070 L021100 Y
070 M011100 Y
070 M021100 Y
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070 P021100 N
070 Q011100 N
070 Q021100 N
070 R011100 N
070 R021100 N
071 A001100 112633
071 B001100 96045
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<PAGE> PAGE 65
072EE001100 0
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075 B001100 554106
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008 A001201 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B001201 A
008 C001201 801-44189
008 D011201 WORCESTER
008 D021201 MA
008 D031201 01653
008 D041201 1959
008 A001202 T. ROWE PRICE ASSOCIATES, INC.
008 B001202 S
008 C001202 801-00000
008 D011202 DENVER
008 D021202 CO
008 D031202 80206
<PAGE> PAGE 66
008 D041202 4923
024 001200 N
025 D001201 0
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045 001200 Y
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<PAGE> PAGE 67
048 E011200 0
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050 001200 N
051 001200 N
052 001200 N
053 A001200 N
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055 B001200 N
056 001200 N
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066 F001200 N
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<PAGE> PAGE 68
068 A001200 N
068 B001200 N
069 001200 N
070 A011200 Y
070 A021200 N
070 B011200 Y
070 B021200 N
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070 C021200 N
070 D011200 Y
070 D021200 N
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070 E021200 N
070 F011200 Y
070 F021200 N
070 G011200 Y
070 G021200 N
070 H011200 Y
070 H021200 N
070 I011200 N
070 I021200 N
070 J011200 Y
070 J021200 N
070 K011200 Y
070 K021200 N
070 L011200 Y
070 L021200 Y
070 M011200 Y
070 M021200 N
070 N011200 Y
070 N021200 Y
070 O011200 Y
070 O021200 N
070 P011200 Y
070 P021200 N
070 Q011200 N
070 Q021200 N
070 R011200 N
070 R021200 N
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071 C001200 327150
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072 A001200 12
072 B001200 646
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<PAGE> PAGE 69
072 I001200 0
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072 Y001200 0
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074 M001200 54180
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<PAGE> PAGE 70
074 T001200 417087
074 U011200 203195
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074 Y001200 0
075 A001200 0
075 B001200 336007
076 001200 0.00
008 A001301 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B001301 A
008 C001301 801-44189
008 D011301 WORCESTER
008 D021301 MA
008 D031301 01653
008 D041301 1959
008 A001302 SCHRODER CAPITAL MANAGEMENT INTERNATIONAL,INC
008 B001302 S
008 C001302 801-000000
008 D011302 DENVER
008 D021302 CO
008 D031302 80206
008 D041302 4923
024 001300 N
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<PAGE> PAGE 71
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050 001300 N
051 001300 N
052 001300 N
053 A001300 N
055 A001300 N
055 B001300 N
056 001300 N
057 001300 N
062 A001300 N
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<PAGE> PAGE 72
062 E001300 0.0
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066 D001300 Y
066 E001300 N
066 F001300 N
066 G001300 N
067 001300 N
068 A001300 N
068 B001300 Y
069 001300 N
070 A011300 Y
070 A021300 N
070 B011300 Y
070 B021300 N
070 C011300 Y
070 C021300 N
070 D011300 Y
070 D021300 N
070 E011300 Y
070 E021300 N
070 F011300 Y
070 F021300 N
070 G011300 Y
070 G021300 N
070 H011300 Y
070 H021300 N
070 I011300 N
070 I021300 N
070 J011300 Y
070 J021300 N
070 K011300 Y
070 K021300 Y
070 L011300 Y
070 L021300 Y
<PAGE> PAGE 73
070 M011300 Y
070 M021300 Y
070 N011300 Y
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070 O021300 N
070 P011300 Y
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070 Q011300 N
070 Q021300 N
070 R011300 N
070 R021300 N
071 A001300 30489
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<PAGE> PAGE 74
073 B001300 0.0000
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008 A001401 ALLMERICA FINANCIAL INVESTMENT MGMT SVC.,INC.
008 B001401 A
008 C001401 801-44189
008 D011401 WORCESTER
008 D021401 MA
008 D031401 01653
008 D041401 1959
008 A001402 CAMBIAR INVESTORS, INC.
008 B001402 S
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008 D011402 DENVER
008 D021402 CO
008 D031402 80206
008 D041402 4923
024 001400 N
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<PAGE> PAGE 75
025 D001402 0
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<PAGE> PAGE 76
048 F021400 0.000
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051 001400 N
052 001400 N
053 A001400 Y
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057 001400 N
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066 G001400 N
067 001400 N
068 A001400 N
<PAGE> PAGE 77
068 B001400 N
069 001400 N
070 A011400 Y
070 A021400 N
070 B011400 Y
070 B021400 N
070 C011400 Y
070 C021400 N
070 D011400 Y
070 D021400 N
070 E011400 Y
070 E021400 N
070 F011400 Y
070 F021400 N
070 G011400 Y
070 G021400 N
070 H011400 Y
070 H021400 N
070 I011400 N
070 I021400 N
070 J011400 Y
070 J021400 N
070 K011400 Y
070 K021400 N
070 L011400 Y
070 L021400 Y
070 M011400 Y
070 M021400 N
070 N011400 Y
070 N021400 N
070 O011400 Y
070 O021400 N
070 P011400 Y
070 P021400 N
070 Q011400 N
070 Q021400 N
070 R011400 N
070 R021400 N
071 A001400 21741
071 B001400 11426
071 C001400 19749
071 D001400 58
072 A001400 12
072 B001400 95
072 C001400 248
072 D001400 0
072 E001400 0
072 F001400 186
072 G001400 0
072 H001400 0
072 I001400 0
<PAGE> PAGE 78
072 J001400 56
072 K001400 0
072 L001400 9
072 M001400 0
072 N001400 0
072 O001400 0
072 P001400 0
072 Q001400 0
072 R001400 9
072 S001400 0
072 T001400 0
072 U001400 0
072 V001400 0
072 W001400 -5
072 X001400 255
072 Y001400 1
072 Z001400 89
072AA001400 804
072BB001400 0
072CC011400 2723
072CC021400 0
072DD011400 87
072DD021400 0
072EE001400 0
073 A011400 0.0030
073 A021400 0.0000
073 B001400 0.0000
073 C001400 0.0000
074 A001400 2720
074 B001400 0
074 C001400 0
074 D001400 0
074 E001400 0
074 F001400 27369
074 G001400 0
074 H001400 0
074 I001400 0
074 J001400 1155
074 K001400 1
074 L001400 65
074 M001400 0
074 N001400 31310
074 O001400 0
074 P001400 20
074 Q001400 0
074 R011400 0
074 R021400 0
074 R031400 0
074 R041400 36
074 S001400 0
074 T001400 31254
<PAGE> PAGE 79
074 U011400 27767
074 U021400 0
074 V011400 1.13
074 V021400 0.00
074 W001400 0.0000
074 X001400 15
074 Y001400 0
075 A001400 0
075 B001400 21869
076 001400 0.00
SIGNATURE GEORGE BOYD
TITLE SECRETARY
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 001
<NAME> AIT Growth
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 735,056,000
<INVESTMENTS-AT-VALUE> 1,042,802,000
<RECEIVABLES> 26,197,000
<ASSETS-OTHER> 22,438,000
<OTHER-ITEMS-ASSETS> 74,234,000
<TOTAL-ASSETS> 1,165,671,000
<PAYABLE-FOR-SECURITIES> 14,240,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 74,134,000
<TOTAL-LIABILITIES> 88,374,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 665,263,000
<SHARES-COMMON-STOCK> 325,117,000
<SHARES-COMMON-PRIOR> 304,511,000
<ACCUMULATED-NII-CURRENT> 206,000
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 103,082,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 307,746,000
<NET-ASSETS> 1,076,297,000
<DIVIDEND-INCOME> 9,510,000
<INTEREST-INCOME> 687,000
<OTHER-INCOME> 101,000
<EXPENSES-NET> 4,217,000
<NET-INVESTMENT-INCOME> 6,081,000
<REALIZED-GAINS-CURRENT> 104,952,000
<APPREC-INCREASE-CURRENT> 135,166,000
<NET-CHANGE-FROM-OPS> 246,199,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 6,015,000
<DISTRIBUTIONS-OF-GAINS> 86,927,000
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 10,842,000
<NUMBER-OF-SHARES-REDEEMED> 20,806,000
<SHARES-REINVESTED> 30,570,000
<NET-CHANGE-IN-ASSETS> 215,964,000
<ACCUMULATED-NII-PRIOR> 140,000
<ACCUMULATED-GAINS-PRIOR> 85,056,000
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 4,048,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 4,552,000
<AVERAGE-NET-ASSETS> 942,701,000
<PER-SHARE-NAV-BEGIN> 2.83
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.77
<PER-SHARE-DIVIDEND> 0.02
<PER-SHARE-DISTRIBUTIONS> 0.29
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 3.31
<EXPENSE-RATIO> 45
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 002
<NAME> AIT Investment Grade Income
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 269,806,000
<INVESTMENTS-AT-VALUE> 259,963,000
<RECEIVABLES> 3,490,000
<ASSETS-OTHER> 8,000
<OTHER-ITEMS-ASSETS> 21,251,000
<TOTAL-ASSETS> 284,712,000
<PAYABLE-FOR-SECURITIES> 21,376,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 22,795,000
<TOTAL-LIABILITIES> 44,171,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 251,016,000
<SHARES-COMMON-STOCK> 228,917,000
<SHARES-COMMON-PRIOR> 203,784,000
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (632,000)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (9,843,000)
<NET-ASSETS> 240,541,000
<DIVIDEND-INCOME> 70,000
<INTEREST-INCOME> 16,469,000
<OTHER-INCOME> 22,000
<EXPENSES-NET> 1,242,000
<NET-INVESTMENT-INCOME> 15,319,000
<REALIZED-GAINS-CURRENT> (638,000)
<APPREC-INCREASE-CURRENT> (16,613,000)
<NET-CHANGE-FROM-OPS> (1,932,000)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 15,569,000
<DISTRIBUTIONS-OF-GAINS> 202,000
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 30,980,000
<NUMBER-OF-SHARES-REDEEMED> 20,503,000
<SHARES-REINVESTED> 14,656,000
<NET-CHANGE-IN-ASSETS> 9,918,000
<ACCUMULATED-NII-PRIOR> 224,000
<ACCUMULATED-GAINS-PRIOR> 201,000
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,060,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,242,000
<AVERAGE-NET-ASSETS> 246,154,000
<PER-SHARE-NAV-BEGIN> 1.13
<PER-SHARE-NII> 0.07
<PER-SHARE-GAIN-APPREC> (0.08)
<PER-SHARE-DIVIDEND> 0.07
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.05
<EXPENSE-RATIO> 50
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 003
<NAME> AIT Money Market
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 543,667,000
<INVESTMENTS-AT-VALUE> 543,667,000
<RECEIVABLES> 5,495,000
<ASSETS-OTHER> 3,000
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 549,165,000
<PAYABLE-FOR-SECURITIES> 22,164,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 13,395,000
<TOTAL-LIABILITIES> 35,559,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 513,703,000
<SHARES-COMMON-STOCK> 513,705,000
<SHARES-COMMON-PRIOR> 336,352,000
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (97,000)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 513,606,000
<DIVIDEND-INCOME> 269,000
<INTEREST-INCOME> 22,442,000
<OTHER-INCOME> 0
<EXPENSES-NET> 1,232,000
<NET-INVESTMENT-INCOME> 21,479,000
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 21,479,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 21,479,000
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 1,057,803,000
<NUMBER-OF-SHARES-REDEEMED> 901,929,000
<SHARES-REINVESTED> 21,479,000
<NET-CHANGE-IN-ASSETS> 177,353,000
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (97,000)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,020,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,232,000
<AVERAGE-NET-ASSETS> 422,366,000
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> 0.05
<PER-SHARE-GAIN-APPREC> 0.00
<PER-SHARE-DIVIDEND> 0.05
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> 29
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 004
<NAME> AIT Equity Index
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 432,680,000
<INVESTMENTS-AT-VALUE> 637,081,000
<RECEIVABLES> 1,500,000
<ASSETS-OTHER> 3,000
<OTHER-ITEMS-ASSETS> 18,163,000
<TOTAL-ASSETS> 656,747,000
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 18,517,000
<TOTAL-LIABILITIES> 18,517,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 368,050,000
<SHARES-COMMON-STOCK> 157,214,000
<SHARES-COMMON-PRIOR> 141,391,000
<ACCUMULATED-NII-CURRENT> 247,000
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 64,551,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 205,382,000
<NET-ASSETS> 638,230,000
<DIVIDEND-INCOME> 7,177,000
<INTEREST-INCOME> 138,000
<OTHER-INCOME> 22,000
<EXPENSES-NET> 1,924,000
<NET-INVESTMENT-INCOME> 5,413,000
<REALIZED-GAINS-CURRENT> 65,106,000
<APPREC-INCREASE-CURRENT> 35,155,000
<NET-CHANGE-FROM-OPS> 105,674,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 5,166,000
<DISTRIBUTIONS-OF-GAINS> 811,000
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 32,647,000
<NUMBER-OF-SHARES-REDEEMED> 18,416,000
<SHARES-REINVESTED> 1,592,000
<NET-CHANGE-IN-ASSETS> 156,353,000
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 256,000
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 1,531,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,933,000
<AVERAGE-NET-ASSETS> 552,890,000
<PER-SHARE-NAV-BEGIN> 3.41
<PER-SHARE-NII> 0.04
<PER-SHARE-GAIN-APPREC> 0.65
<PER-SHARE-DIVIDEND> 0.03
<PER-SHARE-DISTRIBUTIONS> 0.01
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 4.06
<EXPENSE-RATIO> 35
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 005
<NAME> AIT Government Bond
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 90,684,000
<INVESTMENTS-AT-VALUE> 87,420,000
<RECEIVABLES> 1,344,000
<ASSETS-OTHER> 4,000
<OTHER-ITEMS-ASSETS> 22,986,000
<TOTAL-ASSETS> 111,754,000
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 24,507,000
<TOTAL-LIABILITIES> 24,507,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 93,252,000
<SHARES-COMMON-STOCK> 86,290,000
<SHARES-COMMON-PRIOR> 75,884,000
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (2,740,000)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (3,265,000)
<NET-ASSETS> 87,247,000
<DIVIDEND-INCOME> 35,000
<INTEREST-INCOME> 5,881,000
<OTHER-INCOME> 25,000
<EXPENSES-NET> 584,000
<NET-INVESTMENT-INCOME> 5,357,000
<REALIZED-GAINS-CURRENT> (500,000)
<APPREC-INCREASE-CURRENT> (4,565,000)
<NET-CHANGE-FROM-OPS> 292,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 5,445,000
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 27,893,000
<NUMBER-OF-SHARES-REDEEMED> 22,773,000
<SHARES-REINVESTED> 5,286,000
<NET-CHANGE-IN-ASSETS> 6,229,000
<ACCUMULATED-NII-PRIOR> 82,000
<ACCUMULATED-GAINS-PRIOR> (2,269,000)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 478,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 584,000
<AVERAGE-NET-ASSETS> 94,930,000
<PER-SHARE-NAV-BEGIN> 1.07
<PER-SHARE-NII> 0.06
<PER-SHARE-GAIN-APPREC> (0.06)
<PER-SHARE-DIVIDEND> 0.06
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.01
<EXPENSE-RATIO> 62
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 006
<NAME> AIT Select Growth and Income
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 754,905,000
<INVESTMENTS-AT-VALUE> 821,524,000
<RECEIVABLES> 1,837,000
<ASSETS-OTHER> 21,886,000
<OTHER-ITEMS-ASSETS> 11,072,000
<TOTAL-ASSETS> 856,319,000
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 11,781,000
<TOTAL-LIABILITIES> 11,781,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 629,357,000
<SHARES-COMMON-STOCK> 436,949,000
<SHARES-COMMON-PRIOR> 363,138,000
<ACCUMULATED-NII-CURRENT> 420,000
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 147,429,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 67,332,000
<NET-ASSETS> 844,538,000
<DIVIDEND-INCOME> 11,020,000
<INTEREST-INCOME> 2,818,000
<OTHER-INCOME> 25,000
<EXPENSES-NET> 5,329,000
<NET-INVESTMENT-INCOME> 8,534,000
<REALIZED-GAINS-CURRENT> 147,522,000
<APPREC-INCREASE-CURRENT> (32,024,000)
<NET-CHANGE-FROM-OPS> 124,032,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 8,173,000
<DISTRIBUTIONS-OF-GAINS> 54,380,000
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 50,308,000
<NUMBER-OF-SHARES-REDEEMED> 10,177,000
<SHARES-REINVESTED> 33,680,000
<NET-CHANGE-IN-ASSETS> 198,452,000
<ACCUMULATED-NII-PRIOR> 58,000
<ACCUMULATED-GAINS-PRIOR> 54,288,000
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 4,909,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5,354,000
<AVERAGE-NET-ASSETS> 728,642,000
<PER-SHARE-NAV-BEGIN> 1.78
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> 0.30
<PER-SHARE-DIVIDEND> 0.02
<PER-SHARE-DISTRIBUTIONS> 0.15
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.93
<EXPENSE-RATIO> 73
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 007
<NAME> AIT Select Growth
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 842,766,000
<INVESTMENTS-AT-VALUE> 1,222,487,000
<RECEIVABLES> 5,820,000
<ASSETS-OTHER> 15,000
<OTHER-ITEMS-ASSETS> 67,994,000
<TOTAL-ASSETS> 1,296,316,000
<PAYABLE-FOR-SECURITIES> 10,316,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 69,635,000
<TOTAL-LIABILITIES> 79,951,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 691,096,000
<SHARES-COMMON-STOCK> 398,968,000
<SHARES-COMMON-PRIOR> 335,794,000
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 145,548,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 379,721,000
<NET-ASSETS> 1,216,365,000
<DIVIDEND-INCOME> 5,516,000
<INTEREST-INCOME> 1,404,000
<OTHER-INCOME> 80,000
<EXPENSES-NET> 7,776,000
<NET-INVESTMENT-INCOME> (776,000)
<REALIZED-GAINS-CURRENT> 146,732,000
<APPREC-INCREASE-CURRENT> 127,039,000
<NET-CHANGE-FROM-OPS> 272,995,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 504,000
<DISTRIBUTIONS-OF-GAINS> 32,039,000
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 68,437,000
<NUMBER-OF-SHARES-REDEEMED> 17,926,000
<SHARES-REINVESTED> 12,663,000
<NET-CHANGE-IN-ASSETS> 400,975,000
<ACCUMULATED-NII-PRIOR> 504,000
<ACCUMULATED-GAINS-PRIOR> 31,632,000
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 7,472,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 8,009,000
<AVERAGE-NET-ASSETS> 961,222,000
<PER-SHARE-NAV-BEGIN> 2.43
<PER-SHARE-NII> 0.00
<PER-SHARE-GAIN-APPREC> 0.71
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.09
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 3.05
<EXPENSE-RATIO> 81
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 008
<NAME> AIT Select Aggressive Growth
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 749,669,000
<INVESTMENTS-AT-VALUE> 1,025,283,000
<RECEIVABLES> 2,506,000
<ASSETS-OTHER> 10,000
<OTHER-ITEMS-ASSETS> 92,598,000
<TOTAL-ASSETS> 1,120,397,000
<PAYABLE-FOR-SECURITIES> 10,884,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 93,814,000
<TOTAL-LIABILITIES> 104,698,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 533,575,000
<SHARES-COMMON-STOCK> 297,774,000
<SHARES-COMMON-PRIOR> 305,982,000
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 206,510,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 275,614,000
<NET-ASSETS> 1,015,699,000
<DIVIDEND-INCOME> 2,378,000
<INTEREST-INCOME> 671,000
<OTHER-INCOME> 267,000
<EXPENSES-NET> 7,028,000
<NET-INVESTMENT-INCOME> (3,712,000)
<REALIZED-GAINS-CURRENT> 208,801,000
<APPREC-INCREASE-CURRENT> 76,344,000
<NET-CHANGE-FROM-OPS> 281,433,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 65,884,000
<NUMBER-OF-SHARES-REDEEMED> 74,092,000
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 262,958,000
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (2,291,000)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 6,804,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 7,299,000
<AVERAGE-NET-ASSETS> 800,777,000
<PER-SHARE-NAV-BEGIN> 2.46
<PER-SHARE-NII> (0.01)
<PER-SHARE-GAIN-APPREC> 0.96
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 3.41
<EXPENSE-RATIO> 88
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 009
<NAME> AIT Select Income
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 178,219,000
<INVESTMENTS-AT-VALUE> 171,538,000
<RECEIVABLES> 5,916,000
<ASSETS-OTHER> 1,897,000
<OTHER-ITEMS-ASSETS> 11,399,000
<TOTAL-ASSETS> 190,750,000
<PAYABLE-FOR-SECURITIES> 5,101,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 11,612,000
<TOTAL-LIABILITIES> 16,713,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 185,279,000
<SHARES-COMMON-STOCK> 182,709,000
<SHARES-COMMON-PRIOR> 155,548,000
<ACCUMULATED-NII-CURRENT> 99,000
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (4,660,000)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (6,681,000)
<NET-ASSETS> 174,037,000
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 11,835,000
<OTHER-INCOME> 7,000
<EXPENSES-NET> 1,046,000
<NET-INVESTMENT-INCOME> 10,796,000
<REALIZED-GAINS-CURRENT> (4,599,000)
<APPREC-INCREASE-CURRENT> (7,682,000)
<NET-CHANGE-FROM-OPS> (1,485,000)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 10,916,000
<DISTRIBUTIONS-OF-GAINS> 1,346,000
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 36,810,000
<NUMBER-OF-SHARES-REDEEMED> 22,179,000
<SHARES-REINVESTED> 12,530,000
<NET-CHANGE-IN-ASSETS> 13,587,000
<ACCUMULATED-NII-PRIOR> 99,000
<ACCUMULATED-GAINS-PRIOR> 1,338,000
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 901,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 1,046,000
<AVERAGE-NET-ASSETS> 172,399,000
<PER-SHARE-NAV-BEGIN> 1.03
<PER-SHARE-NII> 0.06
<PER-SHARE-GAIN-APPREC> (0.07)
<PER-SHARE-DIVIDEND> 0.06
<PER-SHARE-DISTRIBUTIONS> 0.01
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 0.95
<EXPENSE-RATIO> 61
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 010
<NAME> AIT Select Value Opportunity
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 302,400,000
<INVESTMENTS-AT-VALUE> 305,180,000
<RECEIVABLES> 4,895,000
<ASSETS-OTHER> 4,765,000
<OTHER-ITEMS-ASSETS> 19,836,000
<TOTAL-ASSETS> 334,676,000
<PAYABLE-FOR-SECURITIES> 6,102,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 20,243,000
<TOTAL-LIABILITIES> 26,345,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 302,445,000
<SHARES-COMMON-STOCK> 202,756,000
<SHARES-COMMON-PRIOR> 159,227,000
<ACCUMULATED-NII-CURRENT> 1,208,000
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 1,898,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 2,780,000
<NET-ASSETS> 308,331,000
<DIVIDEND-INCOME> 3,119,000
<INTEREST-INCOME> 567,000
<OTHER-INCOME> 17,000
<EXPENSES-NET> 2,495,000
<NET-INVESTMENT-INCOME> 1,208,000
<REALIZED-GAINS-CURRENT> 1,971,000
<APPREC-INCREASE-CURRENT> (16,101,000)
<NET-CHANGE-FROM-OPS> (12,922,000)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 2,000
<DISTRIBUTIONS-OF-GAINS> 16,638,000
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 52,425,000
<NUMBER-OF-SHARES-REDEEMED> 18,777,000
<SHARES-REINVESTED> 9,881,000
<NET-CHANGE-IN-ASSETS> 39,926,000
<ACCUMULATED-NII-PRIOR> 2,000
<ACCUMULATED-GAINS-PRIOR> 16,564,000
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2,531,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2,736,000
<AVERAGE-NET-ASSETS> 282,135,000
<PER-SHARE-NAV-BEGIN> 1.69
<PER-SHARE-NII> 0.00
<PER-SHARE-GAIN-APPREC> (0.08)
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.09
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.52
<EXPENSE-RATIO> 88
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 011
<NAME> AIT Select International Equity
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 430,165,000
<INVESTMENTS-AT-VALUE> 660,663,000
<RECEIVABLES> 2,737,000
<ASSETS-OTHER> 17,991,000
<OTHER-ITEMS-ASSETS> 48,600,000
<TOTAL-ASSETS> 729,991,000
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 50,650,000
<TOTAL-LIABILITIES> 50,650,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 423,297,000
<SHARES-COMMON-STOCK> 334,405,000
<SHARES-COMMON-PRIOR> 327,959,000
<ACCUMULATED-NII-CURRENT> 3,722,000
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 22,791,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 229,531,000
<NET-ASSETS> 679,341,000
<DIVIDEND-INCOME> 8,630,000
<INTEREST-INCOME> 615,000
<OTHER-INCOME> 121,000
<EXPENSES-NET> 5,524,000
<NET-INVESTMENT-INCOME> 3,842,000
<REALIZED-GAINS-CURRENT> 33,685,000
<APPREC-INCREASE-CURRENT> 127,019,000
<NET-CHANGE-FROM-OPS> 164,546,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 241,959,000
<NUMBER-OF-SHARES-REDEEMED> 235,513,000
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 173,788,000
<ACCUMULATED-NII-PRIOR> (2,522,000)
<ACCUMULATED-GAINS-PRIOR> (8,492,000)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 4,936,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 5,578,000
<AVERAGE-NET-ASSETS> 554,106,000
<PER-SHARE-NAV-BEGIN> 1.54
<PER-SHARE-NII> 0.01
<PER-SHARE-GAIN-APPREC> 0.48
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 2.03
<EXPENSE-RATIO> 101
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 012
<NAME> AIT Select Capital Appreciation
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 315,706,000
<INVESTMENTS-AT-VALUE> 414,109,000
<RECEIVABLES> 4,100,000
<ASSETS-OTHER> 2,000
<OTHER-ITEMS-ASSETS> 54,180,000
<TOTAL-ASSETS> 472,391,000
<PAYABLE-FOR-SECURITIES> 543,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 54,761,000
<TOTAL-LIABILITIES> 55,304,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 305,818,000
<SHARES-COMMON-STOCK> 203,195,000
<SHARES-COMMON-PRIOR> 189,354,000
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 12,866,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 98,403,000
<NET-ASSETS> 417,087,000
<DIVIDEND-INCOME> 1,151,000
<INTEREST-INCOME> 646,000
<OTHER-INCOME> 89,000
<EXPENSES-NET> 3,295,000
<NET-INVESTMENT-INCOME> (1,409,000)
<REALIZED-GAINS-CURRENT> 15,287,000
<APPREC-INCREASE-CURRENT> 68,546,000
<NET-CHANGE-FROM-OPS> 82,424,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 511,000
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 41,852,000
<NUMBER-OF-SHARES-REDEEMED> 28,289,000
<SHARES-REINVESTED> 278,000
<NET-CHANGE-IN-ASSETS> 106,505,000
<ACCUMULATED-NII-PRIOR> (264,000)
<ACCUMULATED-GAINS-PRIOR> (237,000)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3,062,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3,298,000
<AVERAGE-NET-ASSETS> 336,007,000
<PER-SHARE-NAV-BEGIN> 1.64
<PER-SHARE-NII> (0.01)
<PER-SHARE-GAIN-APPREC> 0.42
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 2.05
<EXPENSE-RATIO> 98
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 013
<NAME> AIT Select Emerging Markets
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 35,076,000
<INVESTMENTS-AT-VALUE> 48,096,000
<RECEIVABLES> 783,000
<ASSETS-OTHER> 2,013,000
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 50,892,000
<PAYABLE-FOR-SECURITIES> 337,000
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 103,000
<TOTAL-LIABILITIES> 440,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 38,187,000
<SHARES-COMMON-STOCK> 39,060,000
<SHARES-COMMON-PRIOR> 26,620,000
<ACCUMULATED-NII-CURRENT> (45,000)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (703,000)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 13,013,000
<NET-ASSETS> 50,452,000
<DIVIDEND-INCOME> 564,000
<INTEREST-INCOME> 102,000
<OTHER-INCOME> 0
<EXPENSES-NET> 585,000
<NET-INVESTMENT-INCOME> 81,000
<REALIZED-GAINS-CURRENT> 2,001,000
<APPREC-INCREASE-CURRENT> 15,113,000
<NET-CHANGE-FROM-OPS> 17,195,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 208,000
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 13,235,000
<NUMBER-OF-SHARES-REDEEMED> 984,000
<SHARES-REINVESTED> 189,000
<NET-CHANGE-IN-ASSETS> 29,579,000
<ACCUMULATED-NII-PRIOR> 193,000
<ACCUMULATED-GAINS-PRIOR> (2,783,000)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 428,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 597,000
<AVERAGE-NET-ASSETS> 31,656,000
<PER-SHARE-NAV-BEGIN> 0.78
<PER-SHARE-NII> 0.00
<PER-SHARE-GAIN-APPREC> 0.52
<PER-SHARE-DIVIDEND> 0.01
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.29
<EXPENSE-RATIO> 188
</TABLE>
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial
information extracted from Allmerica
financial statements at December 31, 1999
and is qualified in its entirety by reference
to such financial statements.
</LEGEND>
<SERIES>
<NUMBER> 014
<NAME> AIT Select Strategic Growth
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> DEC-31-1999
<INVESTMENTS-AT-COST> 24,221,000
<INVESTMENTS-AT-VALUE> 27,369,000
<RECEIVABLES> 1,221,000
<ASSETS-OTHER> 2,720,000
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 31,310,000
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 56,000
<TOTAL-LIABILITIES> 56,000
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 27,756,000
<SHARES-COMMON-STOCK> 27,767,000
<SHARES-COMMON-PRIOR> 15,248,000
<ACCUMULATED-NII-CURRENT> 2,000
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 348,000
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 3,148,000
<NET-ASSETS> 31,254,000
<DIVIDEND-INCOME> 248,000
<INTEREST-INCOME> 95,000
<OTHER-INCOME> 0
<EXPENSES-NET> 254,000
<NET-INVESTMENT-INCOME> 89,000
<REALIZED-GAINS-CURRENT> 804,000
<APPREC-INCREASE-CURRENT> 2,723,000
<NET-CHANGE-FROM-OPS> 3,616,000
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 87,000
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 14,098,000
<NUMBER-OF-SHARES-REDEEMED> 1,659,000
<SHARES-REINVESTED> 80,000
<NET-CHANGE-IN-ASSETS> 16,415,000
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> (456,000)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 186,000
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 262,000
<AVERAGE-NET-ASSETS> 21,869,000
<PER-SHARE-NAV-BEGIN> 0.97
<PER-SHARE-NII> 0.00
<PER-SHARE-GAIN-APPREC> 0.16
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.00
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 1.13
<EXPENSE-RATIO> 117
</TABLE>
2
To the Board of Trustees and Shareholders of Allmerica Investment Trust:
In planning and performing our audits of the financial statements of Allmerica
Investment Trust (comprising the Select Emerging Markets Fund, Select Aggressive
Growth Fund, Select Capital Appreciation Fund, Select Value Opportunity Fund,
Select International Equity Fund, Select Growth Fund, Select Strategic Growth
Fund, Growth Fund, Equity Index Fund, Select Growth & Income Fund, Select Income
Fund, Investment Grade Income Fund, Government Bond Fund and Money Market Fund,
hereafter referred to as the "Trust")for the year ended December 31, 1999, we
considered its internal control, including control activities for safeguarding
securities, in order to determine our auditing procedures for the purpose of
expressing our opinion on the financial statements and to comply with the
requirements of Form N-SAR, not to provide assurance on internal control.
The management of the Trust is responsible for establishing and maintaining
internal control. In fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and related costs of
controls. Generally, controls that are relevant to an audit pertain to the
entity's objective of preparing financial statements for external purposes that
are fairly presented in conformity with generally accepted accounting
principles. Those controls include the safeguarding of assets against
unauthorized acquisition, use or disposition.
Because of inherent limitations in internal control, errors or fraud may occur
and not be detected. Also, projection of any evaluation of internal control to
future periods is subject to the risk that controls may become inadequate
because of changes in conditions or that the effectiveness of their design and
operation may deteriorate.
Our consideration of internal control would not necessarily disclose all matters
in internal control that might be material weaknesses under standards
established by the American Institute of Certified Public Accountants. A
material weakness is a condition in which the design or operation of one or more
of the internal control components does not reduce to a relatively low level the
risk that misstatements caused by error or fraud in amounts that would be
material in relation to the financial statements being audited may occur and not
be detected within a timely period by employees in the normal course of
performing their assigned functions. However, we noted no matters involving
internal control and its operation, including controls for safeguarding
securities, that we consider to be material weaknesses as defined above as of
December 31, 1999.
This report is intended solely for the information and use of the Board of
Trustees, management and the Securities and Exchange Commission and is not
intended to be and should not be used by anyone other than these specified
parties.
PricewaterhouseCoopers
Boston, Massachusetts
February 14, 2000
