Shannon River Fund Management LLC

Q2 2026 13F-HR Holdings

Location
New York, NY
Holdings as of
6/30/2026
Date filed
8/13/2026
Form type
13F-HR
Num holdings
37
Total value ($000)
$1,120,394
Net value change ($000)
+596,314 (113.8%)
New positions
22
Sold out positions
13
Turnover %
61.8%
Sector allocation + QoQ delta (equities-only)
Prev filing: 5/14/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q1 2026
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)
AMD 61,432 NEW
KLIC 44,780 NEW
TWLO 41,545 NEW
FLEX 41,187 202.2%
CIEN 39,882 NEW
QUANTINUUM INC 38,365 NEW
UTI 38,070 NEW
CLS 35,991 238.9%
IDCC 35,867 219.5%
TTWO 34,504 NEW
Top Reduces (Value $000, Stocks/ETFs)
MRVL -55,822 -100.0%
AXON -20,148 -100.0%
TOST -19,406 -100.0%
LGN -19,063 -100.0%
ADTN -15,347 -100.0%
UUUU -9,263 -100.0%
AMBA -5,917 -100.0%
APP -5,763 -100.0%
LYV -5,340 -11.9%
ALAB -5,194 -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