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OAM

Oberweis Asset Management Portfolio holdings

AUM $3.39B
1-Year Est. Return 105.5%
This Fund
S&P 500
This Quarter Est. Return
+11.11%
1 Year Est. Return
+105.5%
3 Year Est. Return
+311.52%
5 Year Est. Return
+632.9%
10 Year Est. Return
+11,604.3%
AUM
$2.73B
AUM Growth
+$123M
Cap. Flow
+$6.55M
Cap. Flow %
0.24%
Top 10 Hldgs %
20.79%
Holding
204
New
21
Increased
104
Reduced
20
Closed
25

Top Buys

Rank Stock Value
1
ARQT icon
Arcutis Biotherapeutics
ARQT
+$20.7M
2
GMED icon
Globus Medical
GMED
+$20.5M
3
DAN icon
Dana Inc
DAN
+$16.9M
4
SGHC icon
SGHC Ltd
SGHC
+$15.3M
5
CNR
Core Natural Resources Inc
CNR
+$15.2M

Top Sells

Rank Stock Value
1
ADMA icon
ADMA Biologics
ADMA
+$39.8M
2
SRAD icon
Sportradar
SRAD
+$37.1M
3
ITRI icon
Itron
ITRI
+$35.4M
4
LRN icon
Stride
LRN
+$27.1M
5
QRVO icon
Qorvo
QRVO
+$23.8M

Sector Composition

Rank Sector Weight
1 Technology 37.24%
2 Healthcare 19.19%
3 Industrials 17.15%
4 Consumer Discretionary 13.69%
5 Financials 4.38%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
LITE icon
1
Lumentum
LITE
$59.4B
$104M 3.79%
280,930
-47,700
-15% -$12.3M
CRDO icon
2
Credo Technology Group
CRDO
$39.7B
$97.2M 3.55%
675,388
+31,440
+5% +$4.83M
AAOI icon
3
Applied Optoelectronics
AAOI
$8.04B
$71.1M 2.6%
2,039,641
+151,600
+8% +$4.53M
SN icon
4
SharkNinja
SN
$21B
$58.9M 2.15%
526,310
+43,500
+9% +$4.29M
AMBA icon
5
Ambarella
AMBA
$2.99B
$43.8M 1.6%
617,860
+6,500
+1% +$525K
RMBS icon
6
Rambus
RMBS
$10.4B
$42.5M 1.55%
462,100
-45,799
-9% -$4.51M
SKYW icon
7
Skywest
SKYW
$4.11B
$38.4M 1.4%
382,220
+51,430
+16% +$5.15M
EHC icon
8
Encompass Health
EHC
$11.2B
$38.1M 1.39%
358,971
+171
+0% +$19.8K
SITM icon
9
SiTime
SITM
$16.6B
$37.6M 1.37%
106,396
– –
DOCN icon
10
DigitalOcean
DOCN
$14.4B
$37.5M 1.37%
778,830
+6,830
+0.9% +$301K
NVMI
11
Nova
NVMI
$13.9B
$37.2M 1.36%
113,285
– –
FTDR icon
12
Frontdoor
FTDR
$5.02B
$35.2M 1.29%
610,860
– –
BTSG icon
13
BrightSpring Health Services
BTSG
$14.3B
$34M 1.24%
908,000
– –
MTSI icon
14
MACOM Technology Solutions
MTSI
$20.4B
$30.7M 1.12%
178,960
+1,170
+0.7% +$186K
VCYT icon
15
Veracyte
VCYT
$4.52B
$30.6M 1.12%
726,740
+5,050
+0.7% +$204K
MRCY icon
16
Mercury Systems
MRCY
$6.2B
$30.2M 1.11%
414,040
+15,540
+4% +$1.16M
FLS icon
17
Flowserve
FLS
$9.25B
$28.4M 1.04%
409,941
+656
+0.2% +$42.2K
LTH icon
18
Life Time Group Holdings
LTH
$9.42B
$28.2M 1.03%
1,059,300
+192,900
+22% +$5.02M
WAY
19
Waystar Holding Corp
WAY
$4.32B
$27.5M 1.01%
840,600
+4,050
+0.5% +$144K
RSI icon
20
Rush Street Interactive
RSI
$3.24B
$27.4M 1%
1,411,710
+220,150
+18% +$4.07M
CLH icon
21
Clean Harbors
CLH
$16.1B
$27.4M 1%
116,870
+100
+0.1% +$22.8K
CRS icon
22
Carpenter Technology
CRS
$30B
$26M 0.95%
82,611
– –
TPC
23
Tutor Perini Cor
TPC
$4.57B
$26M 0.95%
387,200
+9,400
+2% +$616K
OSIS icon
24
OSI Systems
OSIS
$3.57B
$25.9M 0.95%
101,400
– –
WGS icon
25
GeneDx Holdings
WGS
$1.75B
$25.9M 0.95%
198,770
+4,850
+3% +$666K
1
2 3 4 5

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Oberweis Asset Management's Q4 2025 Portfolio in Review

As of Q4 2025, Oberweis Asset Management held 204 positions worth $2.73B, up 4.7% from $2.61B the previous quarter. Its ten largest holdings account for 21% of the portfolio.

Oberweis Asset Management's Q4 2025 filing shows 21 new, 104 increased, 20 reduced and 25 closed positions. Its largest new stake was Arcutis Biotherapeutics: 808,400 shares worth $23.5M. The largest sale was ADMA Biologics, an estimated $39.8M.

By sector, the portfolio is most concentrated in Technology at 37% of assets, down from 41% a quarter earlier, followed by Healthcare and Industrials.

  • Oberweis Asset Management's largest Q4 2025 buy was Arcutis Biotherapeutics: 808,400 shares worth $23.5M.
  • Oberweis Asset Management added most to Alphatec Holdings in Q4 2025, an estimated $9.98M increase.
  • Oberweis Asset Management's biggest Q4 2025 reduction was Lumentum, cutting an estimated $12.3M.
  • Oberweis Asset Management fully exited ADMA Biologics in Q4 2025, selling an estimated $39.8M.
  • Oberweis Asset Management's ten largest holdings make up 21% of its $2.73B portfolio in Q4 2025.
  • Oberweis Asset Management opened 21 new positions and closed 25 in Q4 2025.
  • Oberweis Asset Management's portfolio value rose 4.7% quarter-over-quarter to $2.73B.

Based on Oberweis Asset Management's 13F filing for Q4 2025, filed 17 Feb 2026.