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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
NVST icon
76
Envista
NVST
$4.3B
$16.9M 0.5%
+665,400
New +$17.3M
WGS icon
77
GeneDx Holdings
WGS
$1.86B
$16.8M 0.5%
261,370
+62,600
+31% +$5.71M
SPXC icon
78
SPX Corp
SPXC
$11B
$16.7M 0.49%
83,441
+6,541
+9% +$1.41M
SHAK icon
79
Shake Shack
SHAK
$2.26B
$16.6M 0.49%
+187,570
New +$17.3M
CALX icon
80
Calix
CALX
$2.29B
$16.4M 0.48%
335,030
+90,430
+37% +$4.75M
SGHC icon
81
SGHC Ltd
SGHC
$7.36B
$16.4M 0.48%
1,514,400
+245,900
+19% +$2.51M
EZPW icon
82
Ezcorp Inc
EZPW
$2B
$16.2M 0.48%
639,400
+11,500
+2% +$276K
LMAT icon
83
LeMaitre Vascular
LMAT
$2.26B
$16.2M 0.48%
148,601
+32,300
+28% +$3.08M
AEIS icon
84
Advanced Energy
AEIS
$12.7B
$15.9M 0.47%
49,183
+9,483
+24% +$2.75M
ZWS icon
85
Zurn Elkay Water Solutions
ZWS
$7.92B
$15.8M 0.47%
352,183
+86,183
+32% +$4.12M
FN icon
86
Fabrinet
FN
$18.4B
$15.8M 0.47%
30,263
+5,063
+20% +$2.57M
KNSA icon
87
Kiniksa Pharmaceuticals
KNSA
$4.8B
$15.3M 0.45%
318,634
+5,834
+2% +$258K
PAHC icon
88
Phibro Animal Health
PAHC
$1.37B
$15.3M 0.45%
277,100
+67,300
+32% +$3.2M
DIOD icon
89
Diodes
DIOD
$4.37B
$15.3M 0.45%
224,300
+72,400
+48% +$4.57M
AMBA icon
90
Ambarella
AMBA
$3.03B
$15.2M 0.45%
295,185
-322,675
-52% -$20.1M
MD icon
91
Pediatrix Medical
MD
$2.12B
$15M 0.44%
701,087
+141,100
+25% +$2.94M
MGY icon
92
Magnolia Oil & Gas
MGY
$4.73B
$14.3M 0.42%
454,466
+78,166
+21% +$2.09M
SKWD icon
93
Skyward Specialty Insurance
SKWD
$2.35B
$14.3M 0.42%
327,100
+89,600
+38% +$4.07M
HALO icon
94
Halozyme
HALO
$9.23B
$14.2M 0.42%
219,930
+102,350
+87% +$7.22M
LQDA icon
95
Liquidia Corp
LQDA
$7.74B
$14M 0.41%
372,100
+42,900
+13% +$1.59M
ARLO icon
96
Arlo Technologies
ARLO
$1.4B
$14M 0.41%
+982,300
New +$13.1M
HQY icon
97
HealthEquity
HQY
$8.02B
$13.9M 0.41%
166,641
+25,061
+18% +$2.06M
PUMP icon
98
ProPetro Holding
PUMP
$1.67B
$13.9M 0.41%
965,500
+17,600
+2% +$210K
ZETA icon
99
Zeta Global
ZETA
$5.03B
$13.9M 0.41%
871,060
+104,040
+14% +$1.93M
MIR icon
100
Mirion Technologies
MIR
$4.06B
$13.8M 0.41%
744,267
+136,467
+22% +$3.08M
2 3
4
5 6

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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.