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Latest OBERWEIS ASSET MANAGEMENT INC/ Stock Portfolio

$3.39Billion– No. of Holdings #179

OBERWEIS ASSET MANAGEMENT INC/ Performance:
2026 Q1: 7.63%YTD: 7.63%2025: 19.34%
Performance for 2026 Q1 is 7.63%, and YTD is 7.63%, and 2025 is 19.34%.

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

OBERWEIS ASSET MANAGEMENT INC/ is a hedge fund based in Lisle, IL. On 2026-05-15, the fund reported it's updated stock portfolio. In the 13F Holdings report, OBERWEIS ASSET MANAGEMENT INC/ reported an equity portfolio of $3.4 Billions as of 31 Mar, 2026.

The top stock holdings of OBERWEIS ASSET MANAGEMENT INC/ are AAOI, LITE, CRDO. The fund has invested 5.9% of it's portfolio in APPLIED OPTOELECTRONICS INC. and 5.5% of portfolio in LUMENTUM HLDGS, INC.

The fund managers got completely rid off CARGURUS, INC. (CARG), SENSIENT TECHNOLOGIES CORP. (SXT) and GENIUS SPORTS LTD. (GENI) stocks. They significantly reduced their stock positions in FRESHWORKS, INC. (FRSH), IBEX LTD. (IBEX) and WEAVE COMMUNICATIONS, INC. (WEAV). OBERWEIS ASSET MANAGEMENT INC/ opened new stock positions in LEONARDO DRS, INC. (DRS), INDIVIOR PLC and ENVISTA HOLDINGS CORP. (NVST). The fund showed a lot of confidence in some stocks as they added substantially to CLIMB GLOBAL SOLUTIONS, INC. (WSTG), DANA INC. (DAN) and ALPHATEC HLDGS INC. (ATEC).
OBERWEIS ASSET MANAGEMENT INC/ Equity Portfolio Value
Last Reported on: 15 May, 2026

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

Our best estimate is that OBERWEIS ASSET MANAGEMENT INC/ made a return of 7.63% in the last quarter. In trailing 12 months, it's portfolio return was 41.12%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
leonardo drs, inc.20,011,700
indivior plc19,916,000
chime financial inc.19,395,500
hinge health, inc.17,959,900
envista holdings corp.16,881,200
shake shack, inc.16,594,300
arlo technologies, inc.13,978,100
moog inc. - a13,142,500
New stocks bought by OBERWEIS ASSET MANAGEMENT INC/

Additions

Ticker% Inc.
climb global solutions, inc.307
dana inc.102
alphatec hldgs inc.90.75
halozyme therapeutics, inc.87.05
arcutis biotherapeutics, inc.68.97
ameris bancorp68.48
federal signal corp.60.74
merit medical system inc57.84
Additions to existing portfolio by OBERWEIS ASSET MANAGEMENT INC/

Reductions

Ticker% Reduced
freshworks, inc.-97.19
ibex ltd.-95.78
weave communications, inc.-92.71
micron technology-84.44
futu holdings ltd.-59.09
ambarella, inc.-52.22
lincoln edl svcs-39.03
the vita coco co., inc.-33.12
OBERWEIS ASSET MANAGEMENT INC/ reduced stake in above stock

Sold off

Ticker$ Sold
genius sports ltd.-17,476,600
powerfleet, inc.-5,826,740
green dot corp. cl a-9,799,650
backblaze, inc.-2,572,430
cargurus, inc.-19,880,600
indivior plc-15,246,900
aci worldwide inc.-15,810,900
pagaya technologies ltd.-6,387,040
OBERWEIS ASSET MANAGEMENT INC/ got rid off the above stocks

Sector Distribution

OBERWEIS ASSET MANAGEMENT INC/ has about 34.8% of it's holdings in Technology sector.

  • Technology
  • Industrials
  • Others
  • Healthcare
  • Consumer Cyclical
  • Financial Services
  • Energy
  • Communication Services
  • Consumer Defensive
Sector%
Technology34.8
Industrials16.5
Others14.1
Healthcare13.8
Consumer Cyclical10.2
Financial Services3.8
Energy2.8
Communication Services1.8
Consumer Defensive1.4

Market Cap. Distribution

OBERWEIS ASSET MANAGEMENT INC/ has about 21.7% of it's portfolio invested in the large-cap and mega-cap stocks.

  • MID-CAP
  • LARGE-CAP
  • UNALLOCATED
  • SMALL-CAP
Category%
MID-CAP50.2
LARGE-CAP21.7
UNALLOCATED14.1
SMALL-CAP13.6

Stocks belong to which Index?

About 59.1% of the stocks held by OBERWEIS ASSET MANAGEMENT INC/ either belong to S&P 500 or RUSSELL 2000 index.

  • RUSSELL 2000
  • Others
Index%
RUSSELL 200059.1
Others40
Top 5 Winners (%)%
UCTT
ultra clean holdings
142.2 %
AAOI
applied optoelectronics inc.
121.8 %
FSLY
fastly, inc.
114.6 %
LITE
lumentum hldgs, inc.
88.3 %
VIAV
viavi solutions, inc.
75.8 %
Top 5 Winners ($)$
AAOI
applied optoelectronics inc.
109.1 M
LITE
lumentum hldgs, inc.
91.4 M
DOCN
digitalocean holdings, inc.
32.1 M
UCTT
ultra clean holdings
23.4 M
FSLY
fastly, inc.
16.6 M
Top 5 Losers (%)%
WSTG
climb global solutions, inc.
-72.3 %
SMFR
genedx holdings corp.
-47.4 %
ATEC
alphatec hldgs inc.
-41.6 %
PI
impinj, inc.
-39.8 %
RDVT
red violet, inc.
-39.0 %
Top 5 Losers ($)$
CRDO
credo technology group
-42.5 M
SMFR
genedx holdings corp.
-15.1 M
ATEC
alphatec hldgs inc.
-14.8 M
WSTG
climb global solutions, inc.
-10.9 M
QTWO
q2 holdings, inc.
-9.1 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 179 stocks in it's portfolio. About 26% of the portfolio is in top 10 stocks. CRDO proved to be the most loss making stock for the portfolio. AAOI was the most profitable stock for OBERWEIS ASSET MANAGEMENT INC/ last quarter.

Last Reported on: 15 May, 2026
TickerNamesorted ascending% PortfolioShares Held$ ValueType% ChangeOptions