Shannon River Fund Management LLC

Q1 2026 13F-HR Detailed 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)

Holdings broken out by other managers reported in the original SEC filing. View aggregated holdings

You are on the SEC detailed breakdown page. Rows are shown as reported in the filing (including other manager, discretion, and voting authority fields), and are not merged like the standard holdings view. Switch to aggregated holdings.

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 Discretion Other Manager Sole Shared None