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OAM

Oberweis Asset Management Portfolio holdings

AUM $4.84B
1-Year Est. Return 160.95%
This Fund
S&P 500
This Quarter Est. Return
+60.36%
1 Year Est. Return
+160.95%
3 Year Est. Return
+485.02%
5 Year Est. Return
+872.24%
10 Year Est. Return
+17,234.36%
AUM
$4.84B
AUM Growth
+$1.45B
Cap. Flow
+$109M
Cap. Flow %
2.26%
Top 10 Hldgs %
26.61%
Holding
202
New
22
Increased
113
Reduced
28
Closed
26

Top Buys

Rank Stock Value
1
NOVT icon
Novanta
NOVT
+$35.3M
2
ESI icon
Element Solutions
ESI
+$30.7M
3
BLLN
BillionToOne Inc
BLLN
+$27.3M
4
GVA icon
Granite Construction
GVA
+$26.2M
5
CGNX icon
Cognex
CGNX
+$26M

Top Sells

Rank Stock Value
1
LITE icon
Lumentum
LITE
+$173M
2
AAOI icon
Applied Optoelectronics
AAOI
+$90.8M
3
FLS icon
Flowserve
FLS
+$32M
4
PRIM icon
Primoris Services
PRIM
+$23.8M
5
G icon
Genpact
G
+$22.6M

Sector Composition

Rank Sector Weight
1 Technology 42.62%
2 Industrials 18.89%
3 Healthcare 18.45%
4 Consumer Discretionary 10.61%
5 Financials 3.82%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AGX icon
101
Argan
AGX
$5.86B
$16.9M 0.35%
21,120
-12,202
-37% -$8.12M
VISN
102
Vistance Networks Inc
VISN
$1.48B
$16.6M 0.34%
1,298,612
+206,600
+19% +$2.92M
TRS icon
103
TriMas Corp
TRS
$1.42B
$16.3M 0.34%
+362,000
New +$14.4M
ZETA icon
104
Zeta Global
ZETA
$7.87B
$16.1M 0.33%
819,770
-51,290
-6% -$951K
SBCF icon
105
Seacoast Banking Corp of Florida
SBCF
$3.35B
$15.9M 0.33%
477,866
+99,000
+26% +$3.09M
TILE icon
106
Interface
TILE
$2.15B
$15.9M 0.33%
443,200
-700
-0.2% -$20.4K
MD icon
107
Pediatrix Medical
MD
$2.2B
$15.8M 0.33%
623,087
-78,000
-11% -$1.77M
PUMP icon
108
ProPetro Holding
PUMP
$1.41B
$15.7M 0.33%
1,097,100
+131,600
+14% +$2.04M
FSLY icon
109
Fastly Inc
FSLY
$3.28B
$15.6M 0.32%
852,322
-218,700
-20% -$4.75M
MTDR icon
110
Matador Resources
MTDR
$7.32B
$15.6M 0.32%
314,200
+1,500
+0.5% +$85.3K
OSW icon
111
OneSpaWorld
OSW
$2.27B
$15.6M 0.32%
552,990
+67,300
+14% +$1.66M
LMAT icon
112
LeMaitre Vascular
LMAT
$1.84B
$15.2M 0.31%
158,502
+9,901
+7% +$1.02M
CALX icon
113
Calix
CALX
$2.26B
$15M 0.31%
402,230
+67,200
+20% +$2.82M
ARLO icon
114
Arlo Technologies
ARLO
$1.5B
$14.7M 0.3%
1,093,300
+111,000
+11% +$1.5M
INOD icon
115
Innodata
INOD
$1.91B
$14.3M 0.3%
+189,200
New +$13.9M
MGNI icon
116
Magnite
MGNI
$3.46B
$14M 0.29%
735,000
+87,400
+13% +$1.25M
NIC icon
117
Nicolet Bankshares
NIC
$3.61B
$13.8M 0.28%
83,200
+8,400
+11% +$1.24M
MHO icon
118
M/I Homes
MHO
$3.75B
$13.4M 0.28%
83,400
+7,000
+9% +$937K
LOPE icon
119
Grand Canyon Education
LOPE
$3.98B
$13.2M 0.27%
92,530
-24,370
-21% -$3.87M
IMAX icon
120
IMAX
IMAX
$2.83B
$13M 0.27%
326,539
-250,600
-43% -$9.61M
PLUS icon
121
ePlus
PLUS
$2.4B
$12.6M 0.26%
150,998
+13,500
+10% +$1.12M
KN icon
122
Knowles
KN
$3.03B
$12.2M 0.25%
293,110
+58,910
+25% +$2.04M
IDCC icon
123
InterDigital
IDCC
$8.72B
$12.2M 0.25%
42,935
+290
+0.7% +$86.2K
BOOT icon
124
Boot Barn
BOOT
$4.67B
$12M 0.25%
73,200
+5,000
+7% +$811K
LIND icon
125
Lindblad Expeditions
LIND
$1.7B
$11.9M 0.25%
420,721
+42,000
+11% +$887K
3 4
5
6 7

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AG
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MP
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FAM
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SHCM
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BCI
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G
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CCM
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ANTB
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Oberweis Asset Management's Q2 2026 Portfolio in Review

As of Q2 2026, Oberweis Asset Management held 202 positions worth $4.84B, up 43% from $3.39B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

Oberweis Asset Management's Q2 2026 filing shows 22 new, 113 increased, 28 reduced and 26 closed positions. Its largest new stake was Novanta: 244,260 shares worth $39.6M. The largest sale was Lumentum, an estimated $173M.

By sector, the portfolio is most concentrated in Technology at 43% of assets, up from 40% a quarter earlier, followed by Industrials and Healthcare.

  • Oberweis Asset Management's largest Q2 2026 buy was Novanta: 244,260 shares worth $39.6M.
  • Oberweis Asset Management added most to Hinge Health in Q2 2026, an estimated $21.2M increase.
  • Oberweis Asset Management's biggest Q2 2026 reduction was Lumentum, cutting an estimated $173M.
  • Oberweis Asset Management fully exited Flowserve in Q2 2026, selling an estimated $32M.
  • Oberweis Asset Management's ten largest holdings make up 27% of its $4.84B portfolio in Q2 2026.
  • Oberweis Asset Management opened 22 new positions and closed 26 in Q2 2026.
  • Oberweis Asset Management's portfolio value rose 43% quarter-over-quarter to $4.84B.

Based on Oberweis Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.