Shannon River Fund Management LLC

Q3 2025 13F-HR Holdings

Location
New York, NY
Holdings as of
9/30/2025
Date filed
11/13/2025
Form type
13F-HR
Num holdings
20
Total value ($000)
$621,172
Net value change ($000)
-130,794 (-17.4%)
New positions
5
Sold out positions
7
Turnover %
28.1%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/13/2025 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)
FORM 35,260 NEW
FROG 31,378 329.9%
CLH 26,907 NEW
WIX 21,831 59.3%
LRN 12,351 NEW
IDCC 8,654 16.3%
NCNO 8,148 23.5%
TSEM 5,941 9.3%
PEGA 5,296 7.1%
TSM 2,430 NEW
Top Reduces (Value $000, Stocks/ETFs)
COHR -30,123 -75.8%
AFRM -24,653 -100.0%
CART -20,538 -100.0%
MRVL -19,351 -35.2%
FLEX -15,751 -24.2%
ESTC -15,547 -100.0%
MIR -11,957 -100.0%
U -9,814 -100.0%
NATL -8,769 -100.0%
PLTR -8,395 -44.6%
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