OBERWEIS ASSET MANAGEMENT INC/

Q4 2025 13F-HR Holdings

Location
Lisle, IL
Holdings as of
12/31/2025
Date filed
2/17/2026
Form type
13F-HR
Num holdings
179
Total value ($000)
$2,734,879
Net value change ($000)
+123,159 (4.7%)
New positions
21
Sold out positions
25
Turnover %
19.7%
Sector allocation + QoQ delta (equities-only)
Prev filing: 11/17/2025 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q3 2025
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)
LITE 50,077 93.7%
GMED 23,574 NEW
ARQT 23,476 NEW
AAOI 22,145 45.2%
DAN 18,925 NEW
CNR 15,790 NEW
INDV 15,247 NEW
SGHC 15,159 NEW
ALHC 14,763 NEW
ATEC 14,343 213.9%
Top Reduces (Value $000, Stocks/ETFs)
ADMA -39,759 -100.0%
SRAD -37,098 -100.0%
ITRI -35,394 -100.0%
LRN -27,077 -100.0%
QRVO -23,763 -100.0%
PSN -22,615 -100.0%
SFM -15,830 -100.0%
AMSC -15,479 -39.2%
BMI -12,967 -100.0%
CBSH -10,571 -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