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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
MGNI icon
101
Magnite
MGNI
$3.49B
$10.3M 0.38%
635,800
+121,800
+24% +$2.02M
AORT icon
102
Artivion
AORT
$1.29B
$9.9M 0.36%
217,060
+5,260
+2% +$234K
OSW icon
103
OneSpaWorld
OSW
$2.69B
$9.89M 0.36%
476,890
+11,490
+2% +$241K
GDOT icon
104
Green Dot
GDOT
$759M
$9.8M 0.36%
765,000
-205,300
-21% -$2.55M
PLUS icon
105
ePlus
PLUS
$2.36B
$9.73M 0.36%
+110,898
New +$9.15M
MHO icon
106
M/I Homes
MHO
$3.71B
$9.6M 0.35%
75,000
+1,800
+2% +$238K
BOOT icon
107
Boot Barn
BOOT
$4.97B
$9.49M 0.35%
53,800
+11,700
+28% +$2.18M
LMAT icon
108
LeMaitre Vascular
LMAT
$1.85B
$9.43M 0.34%
116,301
+2,534
+2% +$218K
CRMD icon
109
CorMedix
CRMD
$589M
$9.36M 0.34%
805,115
+19,415
+2% +$215K
DCO icon
110
Ducommun
DCO
$3.04B
$9.33M 0.34%
98,100
+2,400
+3% +$224K
IBEX icon
111
IBEX
IBEX
$495M
$9.23M 0.34%
241,800
+5,800
+2% +$214K
VIAV icon
112
Viavi Solutions
VIAV
$10B
$9.05M 0.33%
+508,100
New +$8.2M
PUMP icon
113
ProPetro Holding
PUMP
$1.34B
$9.01M 0.33%
+947,900
New +$8.24M
IDCC icon
114
InterDigital
IDCC
$8.47B
$9.01M 0.33%
28,300
-5,800
-17% -$2.05M
FBK icon
115
FB Financial Corp
FBK
$3.04B
$8.88M 0.32%
159,200
+35,700
+29% +$2M
CECO icon
116
Ceco Environmental
CECO
$4.01B
$8.71M 0.32%
145,508
+53,500
+58% +$2.86M
ATRC icon
117
AtriCure
ATRC
$2.01B
$8.62M 0.32%
217,992
+64,492
+42% +$2.36M
BHE icon
118
Benchmark Electronics
BHE
$2.96B
$8.48M 0.31%
+198,300
New +$8.59M
ADUS icon
119
Addus HomeCare
ADUS
$2.22B
$8.4M 0.31%
78,200
– –
REVG
120
DELISTED
REV Group
REVG
$8.38M 0.31%
137,800
+3,300
+2% +$185K
AEIS icon
121
Advanced Energy
AEIS
$13B
$8.31M 0.3%
39,700
-30,000
-43% -$6.11M
MGY icon
122
Magnolia Oil & Gas
MGY
$5.86B
$8.24M 0.3%
376,300
– –
BBW icon
123
Build-A-Bear
BBW
$435M
$8.22M 0.3%
134,100
+42,500
+46% +$2.31M
HALO icon
124
Halozyme
HALO
$10.2B
$7.91M 0.29%
117,580
– –
PAHC icon
125
Phibro Animal Health
PAHC
$1.44B
$7.84M 0.29%
+209,800
New +$8.52M
3 4
5
6 7

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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.