OBERWEIS ASSET MANAGEMENT INC/

Q3 2025 13F-HR Holdings

Location
Lisle, IL
Holdings as of
9/30/2025
Date filed
11/17/2025
Form type
13F-HR
Num holdings
183
Total value ($000)
$2,611,720
Net value change ($000)
+313,175 (13.6%)
New positions
23
Sold out positions
25
Turnover %
16.4%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/14/2025 Next filing: 2/17/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 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 27,895 109.1%
CRDO 23,529 33.5%
LEVI 21,052 NEW
RMBS 20,543 63.4%
LSCC 20,202 NEW
PI 19,362 NEW
SITM 16,397 104.7%
LFUS 16,136 NEW
AMSC 15,020 61.3%
NYT 14,465 NEW
Top Reduces (Value $000, Stocks/ETFs)
COOP -23,247 -100.0%
PRMB -18,107 -100.0%
ADMA -17,346 -30.4%
GAP -17,236 -100.0%
BRBR -15,305 -100.0%
OSCR -12,402 -100.0%
BFAM -9,838 -100.0%
BPMC -9,293 -100.0%
NOV -9,076 -100.0%
FN -8,665 -34.1%
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