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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, 1999
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: Oberweis Asset Management, Inc.
Address: 951 Ice Cream Dr., Suite 200
North Aurora, IL 60542
Form 13F File Number: 28-4688
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: Patrick B. Joyce
Title: Executive Vice President
Phone: (800) 323-6166
Signature, Place, and Date of Signing:
_________________________ North Aurora, IL April 19, 1999
[Signature] [City, State] [Date]
Report Type (Check only one.):
[X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager
are reported in this report.)
[ ] 13F NOTICE. (Check here if no holdings reported are in this report, and
all holdings are reported by other reporting manager(s).)
[ ] 13F COMBINATION REPORT. (Check here if a portion of the holdings for this
reporting manager are reported in this report and a portion are reported by
other reporting manager(s).)
List of Other Managers Reporting for this Manager:
[If there are no entries in this list, omit this section.]
Form 13F File Number Name
28-4688 _________________________________
[Repeat as necessary.]
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FORM 13F
March 31, 1999
Value Shares/ Sh/ Put/ Invstmt
Name of Issuer Title of class CUSIP (x$1000) Prn Amt Prn Call Dscretn Managers
- --------------------------- -------------- --------- -------- ------- --- ---- ------- ----------
<S> <C> <C> <C> <C> <C> <C> <C> <C>
D ASV Inc. com 001963107 434 25000 SH Sole
D ATI Technologies Inc. com 001941103 499 32600 SH Sole
D Abacus Direct Corp. com 002553105 1517 18500 SH Sole
D Abercrombie & Fitch Co. com 002896207 572 6200 SH Sole
D Action Performance com 004933107 602 20000 SH Sole
D Advance Paradigm Inc. com 007491103 8120 128500 SH Sole
D Advanced Communication com 00750X109 521 44800 SH Sole
D Akorn, Inc. com 009728106 208 50000 SH Sole
D America On Line com 02364J104 1000 6800 SH Sole
D American Eagle Outfitters com 02553D108 3029 42250 SH Sole
D American Healthcorp, Inc. com 02649V104 114 15000 SH Sole
D American Xtal Technology com 030514103 2032 90300 SH Sole
D Analytical Surveys Inc. com 032683302 780 30000 SH Sole
D Andrx Corporation com 034551101 5235 57450 SH Sole
D Apex PC Solutions, Inc. com 037945102 822 59000 SH Sole
D Axent Technologies, Inc. com 05459C108 854 35500 SH Sole
D Biogen Inc. com 090597105 514 4500 SH Sole
D Brightstar Information Technol com 10947N104 108 28000 SH Sole
D Broadcom Corporation com 111320107 1313 21300 SH Sole
D Broadvision Inc. com 111412102 5506 92150 SH Sole
D CGI Group Incorporated Class A com 39945C109 879 40300 SH Sole
D Carrier Access Corporation com 144460102 982 12700 SH Sole
D Catalyst International, Inc. com 14887T105 350 33700 SH Sole
D Chattem Inc. com 162456107 1066 34100 SH Sole
D Check Point Software com M22465104 385 8950 SH Sole
D Chevron Corp. com 166751107 399 4500 SH Sole
D Chico's Fas Inc. com 168615102 1620 75350 SH Sole
D Children's Place com 168905107 1320 49000 SH Sole
D Cinar Corporation com 171905300 460 20000 SH Sole
D Cisco Systems, Inc. com 17275R102 419 3827 SH Sole
D Citrix Systems Inc. com 177376100 530 13900 SH Sole
D Cognicase Inc. com 192423101 877 50830 SH Sole
D Cognizant Technology Solutions com 192446102 1060 38200 SH Sole
D Colorado Medtech, Inc. com 19652U104 977 87800 SH Sole
D Computer Concepts Corp. com 204897300 119 50000 SH Sole
D Compuware Corporation com 205638109 286 12000 SH Sole
D Comtech Telecommunications Cor com 205826209 109 15000 SH Sole
D Concord Communication com 206186108 1738 30500 SH Sole
D Craftmade International Inc. com 22413E104 172 11500 SH Sole
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<TABLE>
<CAPTION>
Voting Authority
----------------------
Name of Issuer Sole Shared None
- --------------------------- ------ ------ ------
<S> <C> <C> <C>
D ASV Inc. 25000
D ATI Technologies Inc. 13000 19600
D Abacus Direct Corp. 18500
D Abercrombie & Fitch Co. 5000 1200
D Action Performance 20000
D Advance Paradigm Inc. 115000 13500
D Advanced Communication 40000 4800
D Akorn, Inc. 50000
D America On Line 4800 2000
D American Eagle Outfitters 35925 6325
D American Healthcorp, Inc. 15000
D American Xtal Technology 62000 28300
D Analytical Surveys Inc. 30000
D Andrx Corporation 44000 13450
D Apex PC Solutions, Inc. 59000
D Axent Technologies, Inc. 28000 7500
D Biogen Inc. 2500 2000
D Brightstar Information Technol 28000
D Broadcom Corporation 19000 2300
D Broadvision Inc. 80000 12150
D CGI Group Incorporated Class A 35000 5300
D Carrier Access Corporation 5500 7200
D Catalyst International, Inc. 25000 8700
D Chattem Inc. 25400 8700
D Check Point Software 5000 3950
D Chevron Corp. 4500
D Chico's Fas Inc. 56000 19350
D Children's Place 46000 3000
D Cinar Corporation 20000
D Cisco Systems, Inc. 2925 902
D Citrix Systems Inc. 9400 4500
D Cognicase Inc. 30000 20830
D Cognizant Technology Solutions 30000 8200
D Colorado Medtech, Inc. 60000 27800
D Computer Concepts Corp. 50000
D Compuware Corporation 7000 5000
D Comtech Telecommunications Cor 15000
D Concord Communication 30000 500
D Craftmade International Inc. 10000 1500
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Form 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers:
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Form 13F Information Table Entry Total: 142 Data Records
Form 13F Information Table Value Total: $134,935 (thousandths)
List of Other Included Managers:
Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional investment managers with respect to which this report is filed,
other than the manager filing this report.
[If there are no entries in this list, state "NONE" and omit the column
headings and list entries.]
No. Form 13F File Number Name
28-
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[Repeat as necessary.]
