13F Insight
DOSSIER · 13F-HR · Q1 2026

OBERWEIS ASSET MANAGEMENT INC/

$3.4B in tracked AUM across 180 positions as of Q1 2026.

OA
CIK 0000937886 · last filed Mar 31, 2026
Total AUM
$3.4B
as of Q1 2026
Holdings
180
—
positions
Whale Score
56
56
tracked
Activity
—
no data
changes this Q
AI Analysis · Q1 2026

OBERWEIS ASSET MANAGEMENT INC/ filed its latest 13F-HR for Q1 2026. See the latest holdings and position changes below.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
AAOI
Applied Optoelectronics Inc.
$199M2.3M5.9%02
LITE
Lumentum Hldgs, Inc.
$187M266K5.5%03
G25457105
Credo Technology Group
$96M1.0M2.8%04
DOCN
DigitalOcean Holdings, Inc.
$80M928K2.3%05
G8068L108
SharkNinja, Inc.
$64M600K1.9%06
M7516K103
Nova Ltd.
$60M138K1.8%07
DAN
Dana Inc.
$54M1.6M1.6%08
BTSG
BrightSpring Health Services
$49M1.2M1.5%09
MTSI
Macom Technology Solutions
$48M216K1.4%10
RMBS
Rambus, Inc
$45M526K1.3%

Filing history

2026Q1Mar 31
$3.4B▲ 23.8%
180 positionsView →2025Q4Dec 31
$2.7B▲ 77.4%
179 positionsView →2025Q3Sep 30
$1.5B▲ 16.7%
101 positionsView →2025Q2Jun 30
$1.3B▼ 34.2%
102 positionsLocked2025Q1Mar 31
$2.0B▼ 5.4%
192 positionsLocked2024Q4Dec 31
$2.1B▲ 8.7%
196 positionsLocked2024Q3Sep 30
$2.0B▲ 19.6%
206 positionsLocked2024Q2Jun 30
$1.6B▲ 18.0%
197 positionsLocked2024Q1Mar 31
$1.4B▲ 28.8%
196 positionsLocked2023Q4Dec 31
$1.1B▲ 14.0%
192 positionsLocked2023Q3Sep 30
$941M▲ 14.4%
195 positionsLocked2023Q2Jun 30
$823M▲ 27.7%
187 positionsLocked
Showing 12 of 100