Shannon River Fund Management LLC

Q1 2026 13F-HR Holdings

Location
New York, NY
Holdings as of
3/31/2026
Date filed
5/14/2026
Form type
13F-HR
Num holdings
28
Total value ($000)
$524,080
Net value change ($000)
-113,426 (-17.8%)
New positions
13
Sold out positions
11
Turnover %
78.9%
Sector allocation + QoQ delta (equities-only)
Prev filing: 2/17/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q4 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)
ABNB 31,192 NEW
RMBS 28,718 NEW
MRVL 23,726 73.9%
TOST 19,406 NEW
TSEM 17,703 25.0%
ADTN 15,347 NEW
FFIV 14,523 NEW
LION 9,983 NEW
UUUU 9,263 NEW
SPHR 8,611 NEW
Top Reduces (Value $000, Stocks/ETFs)
PEGA -62,039 -100.0%
U -47,061 -100.0%
CWAN -29,822 -100.0%
NCNO -29,125 -100.0%
KVYO -23,693 -100.0%
ALAB -22,695 -81.4%
CRDO -21,579 -100.0%
CLS -16,601 -52.4%
GWRE -15,937 -62.9%
AMBA -15,412 -72.3%
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