Latest OBERWEIS ASSET MANAGEMENT INC/ Stock Portfolio

OBERWEIS ASSET MANAGEMENT INC/ Performance:

2025 Q4: 3.71%YTD: 19.34%2024: 19.05%

Performance for 2025 Q4 is 3.71%, and YTD is 19.34%, and 2024 is 19.05%.

About OBERWEIS ASSET MANAGEMENT INC/ and 13F Hedge Fund Stock Holdings

OBERWEIS ASSET MANAGEMENT INC/ is a hedge fund based in Lisle, IL. On 2026-02-17, the fund reported it's updated stock portfolio. In the 13F Holdings report, OBERWEIS ASSET MANAGEMENT INC/ reported an equity portfolio of $2.7 Billions as of 31 Dec, 2025.

The top stock holdings of OBERWEIS ASSET MANAGEMENT INC/ are LITE, CRDO, AAOI. The fund has invested 3.8% of it's portfolio in LUMENTUM HLDGS, INC. and 3.5% of portfolio in CREDO TECHNOLOGY GROUP.

The fund managers got completely rid off ADMA BIOLOGICS, INC. (ADMA), SPORTRADAR GROUP (SRAD) and ITRON INC (ITRI) stocks. They significantly reduced their stock positions in ARGAN, INC (AGX), FABRINET (FN) and ADVANCED ENERGY INDUSTRY, INC. (AEIS). OBERWEIS ASSET MANAGEMENT INC/ opened new stock positions in GLOBUS MEDICAL, INC.-A (GMED), ARCUTIS BIOTHERAPEUTICS, INC. (ARQT) and DANA INC. (DAN). The fund showed a lot of confidence in some stocks as they added substantially to ETON PHARMACEUTICALS, INC. (ETON), ALPHATEC HLDGS INC. (ATEC) and AMERICAN EAGLE OUTFITTERS (AEO).

OBERWEIS ASSET MANAGEMENT INC/ Annual Return Estimates Vs S&P 500

Our best estimate is that OBERWEIS ASSET MANAGEMENT INC/ made a return of 3.71% in the last quarter. In trailing 12 months, it's portfolio return was 19.34%.

Performance
S&P 500

New Buys

Ticker	$ Bought
globus medical, inc.-a	23,573,700
arcutis biotherapeutics, inc.	23,475,900
dana inc.	18,924,800
core natural resources, inc.	15,790,200
indivior plc	15,246,900
super group sghc ltd.	15,158,600
alighnment healthcare, inc.	14,763,100
mirion technologies, inc.	14,234,700

New stocks bought by OBERWEIS ASSET MANAGEMENT INC/

Additions

Ticker	% Inc.
eton pharmaceuticals, inc.	124
alphatec hldgs inc.	116
american eagle outfitters	68.29
pagaya technologies ltd.	60.84
climb global solutions, inc.	59.88
ceco environmental corp.	58.15
genius sports ltd.	56.23
irhythm holdings, inc.	47.41

Additions to existing portfolio by OBERWEIS ASSET MANAGEMENT INC/

Reductions

Ticker	% Reduced
argan, inc	-45.57
fabrinet	-45.1
advanced energy industry, inc.	-43.04
diodes, inc.	-30.54
vse corp.	-25.11
green dot corp. cl a	-21.16
interdigital, inc.	-17.01
primoris services corp.	-15.12

OBERWEIS ASSET MANAGEMENT INC/ reduced stake in above stock

Sold off

Ticker	$ Sold
adma biologics, inc.	-39,758,500
sportradar group	-37,097,800
onespan, inc.	-10,176,800
cellebrite di ltd.	-7,681,610
five9, inc.	-9,597,720
avepoint, inc.	-4,447,460
itron inc	-35,393,700
parsons corp.	-22,614,800

OBERWEIS ASSET MANAGEMENT INC/ got rid off the above stocks

Sector Distribution

OBERWEIS ASSET MANAGEMENT INC/ has about 33.4% of it's holdings in Technology sector.

Sector	%
Technology	33.4
Industrials	15.6
Healthcare	14.7
Others	12.5
Consumer Cyclical	11.2
Financial Services	3.9
Communication Services	2.4
Energy	2.1
Consumer Defensive	2
	1.5

Market Cap. Distribution

OBERWEIS ASSET MANAGEMENT INC/ has about 20.3% of it's portfolio invested in the large-cap and mega-cap stocks.

Category	%
MID-CAP	51.8
LARGE-CAP	20.3
SMALL-CAP	15
UNALLOCATED	12.5

Stocks belong to which Index?

About 65.1% of the stocks held by OBERWEIS ASSET MANAGEMENT INC/ either belong to S&P 500 or RUSSELL 2000 index.

Index	%
RUSSELL 2000	64
Others	35
S&P 500	1.1

Top 5 Winners (%)		%
LITE	lumentum hldgs, inc.	117.3 %
AXGN	axogen inc.	81.6 %
LQDA	liquidia corp.	50.7 %
DOCN	digital ocean holdings, inc.	40.6 %
AEO	american eagle outfitters	38.9 %

Top 5 Winners ($)		$
LITE	lumentum hldgs, inc.	62.7 M
AAOI	applied optoelectronics inc.	17.5 M
DOCN	digital ocean holdings, inc.	10.8 M
MTSI	macom technology solutions	8.3 M
	brightspring health services	7.2 M

Top 5 Losers (%)		%
BLZE	backblaze, inc.	-49.5 %
AMSC	american superconductor	-48.9 %
COUR	coursera, inc.	-33.4 %
CVLT	commvault systems, inc.	-31.3 %
PGY	pagaya technologies ltd.	-25.4 %

Top 5 Losers ($)		$
AMSC	american superconductor	-23.0 M
CVLT	commvault systems, inc.	-7.6 M
EHC	encompass health corporation	-7.5 M
AMBA	ambarella, inc.	-7.2 M
RMBS	rambus, inc	-6.0 M

OBERWEIS ASSET MANAGEMENT INC/ Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of OBERWEIS ASSET MANAGEMENT INC/

OBERWEIS ASSET MANAGEMENT INC/ has 178 stocks in it's portfolio. About 20.8% of the portfolio is in top 10 stocks. AMSC proved to be the most loss making stock for the portfolio. LITE was the most profitable stock for OBERWEIS ASSET MANAGEMENT INC/ last quarter.

Last Reported on: 17 Feb, 2026

Ticker	Namesorted ascending	% Portfolio	Shares Held	$ Value	Type	% Change
AAOI	applied optoelectronics inc.	2.60	2,039,640	71,101,900	added	8.03

AAPL	apple, inc.	0.04	3,476	944,879	added	2.6

ABCB	ameris bancorp	0.42	156,400	11,615,800	unchanged	0.00

ACA	arcosa, inc.	0.86	221,600	23,560,500	unchanged	0.00

ACIW	aci worldwide inc.	0.58	330,702	15,810,900	unchanged	0.00

ADMA	adma biologics, inc.	0.00	0.00	0.00	sold off	-100

ADPT	adaptive biotechnologies	0.44	744,500	12,090,700	added	2.48

ADUS	addus homecare corp.	0.31	78,200	8,397,900	unchanged	0.00

AEIS	advanced energy industry, inc.	0.30	39,700	8,311,990	reduced	-43.04

AEO	american eagle outfitters	0.78	814,500	21,478,400	added	68.29

AFL	aflac inc.	0.01	2,000	220,540	unchanged	0.00

AGX	argan, inc	0.38	32,971	10,330,600	reduced	-45.57

AIR	aar corp.	0.83	272,700	22,576,800	added	15.31

AIZ	assurant, inc.	0.73	83,000	19,990,600	unchanged	0.00

ALHC	alighnment healthcare, inc.	0.54	747,500	14,763,100	new

AMBA	ambarella, inc.	1.60	617,860	43,769,200	added	1.06

AMGN	amgen, inc.	0.01	1,035	338,811	added	0.1

AMSC	american superconductor	0.88	835,900	24,057,200	added	25.57

ANIP	ani pharmaceuticals, inc.	0.54	188,830	14,906,200	added	35.95

AORT	artivion, inc	0.36	217,060	9,900,110	added	2.48