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Hypotheticals Return - not actual results!   Base Value: $410,823,278 Current Value: $423,730,607 Change: $12,907,329 Performance: 3.14 %

Name: Oberweis Asset Management Inc Last Trade: 2010-02-16 Owner Class: Institution Address: 3333 Warrenville Road,Suite 500,Lisle Il 60532, Phone: 6305772300 Fax: Website:

Stock Trading Hypotheticals

Hypotheticals use the owners holdings and changes reported as a model portfolio combining with stock price changes between the base price date and end price date. All results/returns are hypothetical and are not actual results!

Worst Move:	Lost $-858,341 on changes made with American Superconductor Corp (AMSC) buying shares when price went down.
Best Move:	Made $499,432 on changes made with Acme Packet Inc (APKT) buying shares when price went up.
Best Save:	Saved $-1,114,903 on changes made with Baiducom (BIDU) selling shares when price went down.
Missed Move:	Missed $564,920 on changes made with Maxwell Technologies Inc (MXWL) selling shares when price went up.

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Oberweis Asset Management Inc Stock Trading

Show ALL transactions instead of just the most recent 10:
Use 'As-Of/On' instead of 'Filed' for dates:		Begin date:		End date:
A begin price of 1900-01-01 will use the date filed for begin price:		Begin Price date:		End Price date:
- report date span limited to 100 days, all dates in format of yyyy-mm-dd, all fields required!

Transactions: Currently showing holdings/transactions Filed between 2009-11-18 and 2010-02-16

Prices: Currenty using base stock prices on Filing Date compared to stock prices on 2010-03-19

Show/Hide Columns Of Stock Trading Details

Filed	As-Of/On	Form	FullName
Symbol	Country	Industry	Shares
Activity	Shares Change	Shares Change Pct.	Hypothetical Old Value
Hypothetical New Value	Hypothetical Value Change	Hypothetical Return	Hypothetical Results
Director	Ten Pct	Other	Officer
Officer Title	History

Stock Trading: Ten Trades Most Recently Reported

Filed	As-Of/On	Form	Fullname	Symbol	Country	Industry	Shares	Activity	Shares Change	Shares Pct. Change	Hypothetical Old Value	Hypothetical New Value	Hypothetical Value Chg.	Hypothetical Return	Hypothetical Results	Director	Other	Ten Pct	Officer	Officer Title	History
2010-02-16	2009-12-31	13F-HR	Novatel Wireless Inc	NVTL	US	Wireless Equipment	0	Sold All	-725,690	-100 %	-	-	-	-8.83 %	$478,955						History of Oberweis Asset Management Inc Ownership Of Novatel Wireless Inc
2010-02-16	2009-12-31	13F-HR	Repligen Corp	RGEN	US	Medical-Biomedical/Gene	262,800	Sold Some	-551,900	-67.74 %	$959,220	$985,500	$26,280	2.73 %	$-55,190						History of Oberweis Asset Management Inc Ownership Of Repligen Corp
2010-02-16	2009-12-31	13F-HR	Kvh Industries Inc	KVHI	US	Telecom Eq Fiber Optics	546,300	New Holding	546,300	100 %	$7,211,160	$6,970,788	$-240,372	-3.33 %	$-240,372						History of Oberweis Asset Management Inc Ownership Of Kvh Industries Inc
2010-02-16	2009-12-31	13F-HR	Nanometrics Inc	NANO	US	Semiconductor Equipment	507,800	New Holding	507,800	100 %	$5,078,000	$4,351,846	$-726,154	-14.30 %	$-726,154						History of Oberweis Asset Management Inc Ownership Of Nanometrics Inc
2010-02-16	2009-12-31	13F-HR	Ista Pharmaceuticals Inc	ISTA	US	Therapeutics	734,200	Added More	460,300	168.05 %	$2,907,432	$2,878,064	$-29,368	-1.01 %	$-18,412						History of Oberweis Asset Management Inc Ownership Of Ista Pharmaceuticals Inc
2010-02-16	2009-12-31	13F-HR	Kulicke And Soffa Industries Inc	KLIC	US	Semiconductor Equipment	665,370	Added More	388,070	139.94 %	$4,963,660	$4,398,096	$-565,565	-11.39 %	$-329,860						History of Oberweis Asset Management Inc Ownership Of Kulicke And Soffa Industries Inc
2010-02-16	2009-12-31	13F-HR	Nps Pharmaceuticals Inc	NPSP	US	Therapeutics	0	Sold All	-369,100	-100 %	-	-	-	27.53 %	$-321,117						History of Oberweis Asset Management Inc Ownership Of Nps Pharmaceuticals Inc
2010-02-16	2009-12-31	13F-HR	Gse Systems Inc	GVP	US	Decision Support Softwar	1,325,850	Added More	357,130	36.86 %	$7,424,760	$7,000,488	$-424,272	-5.71 %	$-114,282						History of Oberweis Asset Management Inc Ownership Of Gse Systems Inc
2010-02-16	2009-12-31	13F-HR	Art Technology Group Inc	ARTG	US	Internet Applic Sftwr	951,200	Sold Some	-349,900	-26.89 %	$3,861,872	$3,995,040	$133,168	3.44 %	$-48,986						History of Oberweis Asset Management Inc Ownership Of Art Technology Group Inc
2010-02-16	2009-12-31	13F-HR	Starent Networks Corp	STAR	US	Networking Products	0	Sold All	-346,956	-100 %	-	-	-	- %							History of Oberweis Asset Management Inc Ownership Of Starent Networks Corp

Returned 10 Records!

Stock Trading Sources
Form Type	Filed	As-Of/On	Sec Filename
SC 13G/A	2010-02-12	2009-12-31	edgar/data/937886/0001144204-10-007060.txt
SC 13G	2010-02-12	2009-12-31	edgar/data/937886/0001144204-10-007057.txt
SC 13G	2010-02-12	2009-12-31	edgar/data/937886/0001144204-10-007055.txt
SC 13G	2010-02-12	2009-12-31	edgar/data/937886/0001144204-10-007054.txt
13F-HR	2010-02-16	2009-12-31	edgar/data/937886/0001144204-10-007773.txt

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Note: All amounts are based on price of stock at date reported versus the current price! They do not represent actual profit/loss! There has been no adjustmentsfor splits!

Note: All amounts in USD, converted using Intrabank Exchange Rate on Date Reported/Today

Information is provided 'as is' and solely for informational purposes, not for trading purposes or advice, and may be inaccurate!

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