UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F
FORM 13F COVER PAGE
Report for the Calendar Year or Quarter ended: March 31, 2000
Check here if Amendment [ ]; Amendment Number:
This Amendment (Check only one.)[ ] is a restatement.
[ ] adds new holdings entries.
Institutional Investment Manager Filing this Report:
Name: Advanced Investment Technology, Inc.
Address: 311 Park Place Blvd.
Suite 250
Clearwater, FL 33759
13F File Number: 28-5970
The institutional investment manager filing this report and the
person by whom it is signed hereby represent that the person
signing the report is authorized to submit it, that all
information contained herein is true, correct and complete, and
that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of
this form.
Person Signing this Report on Behalf of Reporting Manager:
Name: Douglas W. Case
Title: President
Phone: 727-799-3671
Signature, Place, and Date of Signing:
Douglas W. Case, Clearwater, Florida, April 12, 2000
Report Type (Check only one.):
[X] 13F HOLDINGS REPORT.
[ ] 13F NOTICE.
[ ] 13F COMBINATION REPORT.
List of Other Managers Reporting for this Manager:
I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE
ACT OF 1934.
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FORM 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers: 0
Form 13F Information Table Entry Total 74
Form 13F Information Table Value total: $979,839
List of Other Included Managers:None
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TITLE
OF VAL SH/PRN SH/ PT/ INV OTHR
NAME OF ISSUER CLASS CUSIP x$1000 AMT PRN CL DISCR MGRS SOLE SHRD NONE
AFLAC INC COM 001055102 5923 130000SH Sole 130000
ALUMINUM CO AMER COM 013817101 1300 18500SH Sole 18500
AMERICA ONLINE INC DEL COM COM 02364J104 11289 167400SH Sole 167400
AMERICAN EXPRESS CO COM 025816109 2189 14700SH Sole 14700
AMERICAN GENERAL CORP COM 026351106 1465 26100SH Sole 26100
AMERICAN INTL GROUP COM 026874107 2144 19576SH Sole 19576
AMERICAN TEL&TELEG CO COM 001957109 3825 67923SH Sole 67923
AMGEN INC COM COM 031162100 3760 61258SH Sole 61258
ANHEUSER BUSCH COS INC COM 035229103 11709 188100SH Sole 188100
APPLIED MATLS INC COM 038222105 20226 214600SH Sole 214600
AT&T CORP COM LIB GRP A COM 001957208 12046 203100SH Sole 203100
ATLANTIC RICHFIELD CO COM 048825103 2260 26593SH Sole 26593
BAXTER INTL INC COM 071813109 8131 129700SH Sole 129700
BELL ATLANTIC CORP COM 077853109 1718 28100SH Sole 28100
BOEING CO COM 097023105 13934 368500SH Sole 368500
BRISTOL MYERS SQUIBB COM 110122108 23568 406352SH Sole 406352
CIGNA CORP COM 125509109 1454 19192SH Sole 19192
CISCO SYS INC COM 17275R102 96544 1248752SH Sole 1E+06
CITIGROUP INC COM COM 172967101 5104 85250SH Sole 85250
COLGATE PALMOLIVE CO COM 194162103 11957 212100SH Sole 212100
COMCAST CORP CL A SPL COM 200300200 8037 185300SH Sole 185300
COMPUTER ASSOC INTL COM 204912109 13915 235100SH Sole 235100
COMPUTER SCIENCES CORP COM 205363104 997 12600SH Sole 12600
COSTCO COMPANIES INC COM COM 22160Q102 16786 319355SH Sole 319355
DELL COMPUTER CORP COM 247025109 13037 241700SH Sole 241700
DOW CHEM CO COM 260543103 1482 13000SH Sole 13000
DU PONT E I DE NEMOURS COM 263534109 5087 96100SH Sole 96100
E M C CORP MASS COM COM 268648102 22302 177000SH Sole 177000
ELECTRONIC DATA SYS NW COM COM 285661104 9044 140900SH Sole 140900
EXXON CORP COM 302290101 3550 45553SH Sole 45553
FEDERAL NATL MTG ASSN COM 313586109 6131 108400SH Sole 108400
FIRST DATA CORP COM COM 319963104 7979 179800SH Sole 179800
FORD MTR CO DEL COM 345370100 1305 28400SH Sole 28400
GAP INC DEL COM COM 364760108 6668 133865SH Sole 133865
GENERAL DYNAMICS CORP COM 369550108 1731 34800SH Sole 34800
GENERAL ELEC CO COM 369604103 83154 534323SH Sole 534323
GOLDMAN SACHS GROUP COM COM 38141G104 12024 114241SH Sole 114241
HEWLETT PACKARD CO COM 428236103 17154 129100SH Sole 129100
HOME DEPOT INC COM 437076102 30360 470697SH Sole 470697
ILLINOIS TOOL WKS INC COM 452308109 7553 136700SH Sole 136700
INTEL CORP COM 458140100 72176 547047SH Sole 547047
INTERNATIONAL BUS MACH COM 459200101 2561 21700SH Sole 21700
JOHNSON & JOHNSON COM 478160104 14219 202400SH Sole 202400
KIMBERLY CLARK CORP COM 494368103 8970 160000SH Sole 160000
LOWES COS INC COM COM 548661107 6153 105400SH Sole 105400
LUCENT TECHNOLOGY COM 549463107 22154 361700SH Sole 361700
MALLINCKRODT INC. COM 561232109 1228 42700SH Sole 42700
MAY DEPT STORES CO COM 577778103 1200 42100SH Sole 42100
MBNA CORP COM 55262L100 11233 440500SH Sole 440500
MERCK & CO INC COM 589331107 12419 199900SH Sole 199900
MERRILL LYNCH & CO INC COM 590188108 1522 14500SH Sole 14500
MICROSOFT CORP COM COM 594918104 58597 551500SH Sole 551500
MINNESOTA MNG & MFG CO COM 604059105 1001 11300SH Sole 11300
NORTHERN TELECOM LTD COM 656569100 4553 36100SH Sole 36100
OCCIDENTAL PETE CP DEL COM 674599105 1623 78200SH Sole 78200
OMNICOM GROUP INC COM 681919106 9578 102300SH Sole 102300
ORACLE SYSTEMS CORP COM COM 68389X105 52177 668400SH Sole 668400
QUALCOMM INC COM COM 747525103 15257 102185SH Sole 102185
RALSTON PURINA CO COM 751277302 3025 110000SH Sole 110000
SARA LEE CORP COM 803111103 9259 514404SH Sole 514404
SCHERING PLOUGH CORP COM COM 806605101 15871 427500SH Sole 427500
SCHWAB CHARLES CP NEW COM 808513105 14146 249000SH Sole 249000
SEARS ROEBUCK & CO COM 812387108 1191 38900SH Sole 38900
SOUTHWESTERN BELL CORP COM COM 78387G103 7957 188900SH Sole 188900
SUN MICROSYSTEMS INC COM 866810104 24934 266100SH Sole 266100
TANDY CORP COM 875382103 1599 31500SH Sole 31500
TARGET CORPORATION COM 239753106 7191 96200SH Sole 96200
TEXAS INSTRS INC COM 882508104 21840 136500SH Sole 136500
UNICOM CORP COM COM 904911104 1723 47200SH Sole 47200
UNITED TECHNOLOGIES CP COM 913017109 10995 174000SH Sole 174000
WAL MART STORES INC COM 931142103 30103 532800SH Sole 532800
WEYERHAEUSER CO COM 962166104 1015 17800SH Sole 17800
WORLDCOM INC GA COM COM 55268B106 18284 403500SH Sole 403500
YAHOO INC COM COM 984332106 5244 30600SH Sole 30600
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