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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
+24.05%
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
$3.39B
AUM Growth
+$651M
Cap. Flow
+$406M
Cap. Flow %
11.98%
Top 10 Hldgs %
26.04%
Holding
200
New
21
Increased
130
Reduced
19
Closed
20

Top Buys

Rank Stock Value
1
CRDO icon
Credo Technology Group
CRDO
+$42.2M
2
DAN icon
Dana Inc
DAN
+$25.5M
3
CHYM
Chime Financial
CHYM
+$23.5M
4
AAOI icon
Applied Optoelectronics
AAOI
+$19.8M
5
HNGE
Hinge Health
HNGE
+$19.4M

Top Sells

Rank Stock Value
1
AMBA icon
Ambarella
AMBA
+$20.1M
2
CARG icon
CarGurus
CARG
+$19.9M
3
FRSH icon
Freshworks
FRSH
+$18.4M
4
SXT icon
Sensient Technologies
SXT
+$17.7M
5
GENI icon
Genius Sports
GENI
+$17.5M

Sector Composition

Rank Sector Weight
1 Technology 39.82%
2 Industrials 18.77%
3 Healthcare 18.12%
4 Consumer Discretionary 12.4%
5 Financials 4.26%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AAOI icon
1
Applied Optoelectronics
AAOI
$8.87B
$199M 5.87%
2,349,969
+310,328
+15% +$19.8M
LITE icon
2
Lumentum
LITE
$64.6B
$187M 5.53%
266,222
-14,708
-5% -$8.08M
CRDO icon
3
Credo Technology Group
CRDO
$42.6B
$95.9M 2.83%
1,021,968
+346,580
+51% +$42.2M
DOCN icon
4
DigitalOcean
DOCN
$16.7B
$79.6M 2.35%
927,505
+148,675
+19% +$9.37M
SN icon
5
SharkNinja
SN
$20.8B
$63.5M 1.88%
599,970
+73,660
+14% +$8.62M
NVMI
6
Nova
NVMI
$14.5B
$59.9M 1.77%
137,955
+24,670
+22% +$10.9M
DAN icon
7
Dana Inc
DAN
$3.02B
$54.2M 1.6%
1,611,500
+815,000
+102% +$25.5M
BTSG icon
8
BrightSpring Health Services
BTSG
$13.7B
$49.4M 1.46%
1,158,970
+250,970
+28% +$10.1M
MTSI icon
9
MACOM Technology Solutions
MTSI
$21.6B
$47.9M 1.42%
215,886
+36,926
+21% +$8.24M
RMBS icon
10
Rambus
RMBS
$11.2B
$45.3M 1.34%
526,316
+64,216
+14% +$6.41M
CLH icon
11
Clean Harbors
CLH
$16.2B
$41.4M 1.22%
144,355
+27,485
+24% +$7.5M
SITM icon
12
SiTime
SITM
$17.7B
$41.2M 1.22%
119,281
+12,885
+12% +$4.74M
UCTT
13
Ultra Clean Holdings
UCTT
$4.55B
$39.8M 1.18%
640,476
+11,976
+2% +$614K
ECG
14
Everus Construction Group
ECG
$6.99B
$38.6M 1.14%
326,533
+66,733
+26% +$6.9M
FTDR icon
15
Frontdoor
FTDR
$5.06B
$38M 1.12%
717,960
+107,100
+18% +$6.39M
CRS icon
16
Carpenter Technology
CRS
$29.2B
$37.2M 1.1%
94,433
+11,822
+14% +$4.31M
SKYW icon
17
Skywest
SKYW
$3.8B
$36M 1.06%
392,499
+10,279
+3% +$1.01M
LSCC icon
18
Lattice Semiconductor
LSCC
$18.8B
$34.7M 1.03%
374,436
+59,800
+19% +$5.36M
GMED icon
19
Globus Medical
GMED
$10.2B
$33.8M 1%
392,200
+122,200
+45% +$11M
CAMT icon
20
Camtek
CAMT
$7.32B
$33.8M 1%
222,780
+3,900
+2% +$591K
ARQT icon
21
Arcutis Biotherapeutics
ARQT
$3.49B
$32.2M 0.95%
1,365,941
+557,541
+69% +$14.2M
FLS icon
22
Flowserve
FLS
$8.77B
$32M 0.94%
434,681
+24,740
+6% +$1.96M
SIMO icon
23
Silicon Motion
SIMO
$9.55B
$31.7M 0.94%
282,550
+46,250
+20% +$5.61M
LTH icon
24
Life Time Group Holdings
LTH
$9.36B
$31.3M 0.92%
1,160,500
+101,200
+10% +$2.8M
RSI icon
25
Rush Street Interactive
RSI
$3.21B
$31.2M 0.92%
1,434,560
+22,850
+2% +$438K
1
2 3 4 5

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VFCM
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BCM
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MCM
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EFM
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DIA
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Oberweis Asset Management's Q1 2026 Portfolio in Review

As of Q1 2026, Oberweis Asset Management held 200 positions worth $3.39B, up 24% from $2.73B the previous quarter. Its ten largest holdings account for 26% of the portfolio.

Oberweis Asset Management deployed $406M of net new capital in Q1 2026, opening 21 new positions and adding to 130 existing holdings. Its largest new stake was Chime Financial: 1,035,530 shares worth $19.4M.

By sector, the portfolio is most concentrated in Technology at 40% of assets, up from 37% a quarter earlier, followed by Industrials and Healthcare.

On the sell side, the largest reduction was Ambarella, an estimated $20.1M trimmed.

  • Oberweis Asset Management's largest Q1 2026 buy was Chime Financial: 1,035,530 shares worth $19.4M.
  • Oberweis Asset Management added most to Credo Technology Group in Q1 2026, an estimated $42.2M increase.
  • Oberweis Asset Management's biggest Q1 2026 reduction was Ambarella, cutting an estimated $20.1M.
  • Oberweis Asset Management fully exited CarGurus in Q1 2026, selling an estimated $19.9M.
  • Oberweis Asset Management's ten largest holdings make up 26% of its $3.39B portfolio in Q1 2026.
  • Oberweis Asset Management opened 21 new positions and closed 20 in Q1 2026.
  • Oberweis Asset Management's portfolio value rose 24% quarter-over-quarter to $3.39B.

Based on Oberweis Asset Management's 13F filing for Q1 2026, filed 15 May 2026.