OBERWEIS ASSET MANAGEMENT INC/

Q2 2026 13F-HR Holdings

Location
Lisle, IL
Holdings as of
6/30/2026
Date filed
8/14/2026
Form type
13F-HR
Num holdings
176
Total value ($000)
$4,839,542
Net value change ($000)
+1,453,877 (42.9%)
New positions
23
Sold out positions
27
Turnover %
16.3%
Sector allocation + QoQ delta (equities-only)
Prev filing: 5/15/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q1 2026
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
CRDO 179,670 187.3%
SIMO 73,721 232.4%
AAOI 66,589 33.5%
DOCN 66,478 83.6%
HNGE 53,045 295.4%
UCTT 52,470 131.8%
SITM 47,901 116.3%
MXL 40,906 NEW
NOVT 39,629 NEW
BLLN 35,878 NEW
Top Reduces (Value $000, Stocks/ETFs)
LITE -125,151 -66.9%
FLS -31,953 -100.0%
PRIM -23,759 -100.0%
G -22,604 -100.0%
ATEC -20,762 -100.0%
EYE -20,663 -100.0%
PEGA -19,377 -100.0%
DAN -18,356 -33.9%
AEO -17,450 -100.0%
WGS -16,785 -100.0%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type