Shannon River Fund Management Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$524.1M
Q ending 2026-03-31
Prior quarter
$637.5M
Q ending 2025-12-31
Change
-17.8% QoQ · +36.8% YoY
Positions
28
reported holdings
Largest positions
All 28 reported positions, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Tower Semiconductor Ltd | Shares | $88.5M | 504K | |
| Marvell Technology Inc | MRVL | Shares | $55.8M | 564K |
| Live Nation Entertainment In | LYV | Shares | $44.9M | 294K |
| Airbnb Inc | ABNB | Shares | $31.2M | 247K |
| Rambus Inc Del | RMBS | Shares | $28.7M | 334K |
| Coherent Corp | COHR | Shares | $20.9M | 88K |
| Flextronics Intl Ltd | Shares | $20.4M | 311K | |
| Axon Enterprise Inc | AXON | Shares | $20.1M | 47K |
| Extreme Networks | EXTR | Shares | $19.8M | 1.3M |
| Toast Inc | TOST | Shares | $19.4M | 732K |
| Legence Corp | LGN | Shares | $19.1M | 338K |
| Interdigital Inc | IDCC | Shares | $16.3M | 54K |
| Hinge Health Inc | HNGE | Shares | $16.1M | 417K |
| Adtran Holdings Inc | ADTN | Shares | $15.3M | 1.2M |
| Celestica Inc | CLS | Shares | $15.1M | 53K |
| F5 Inc | FFIV | Shares | $14.5M | 50K |
| Lionsgate Studios Corp | LION | Shares | $10.0M | 1.0M |
| Guidewire Software Inc | GWRE | Shares | $9.4M | 63K |
| Energy Fuels Inc | UUUU | Shares | $9.3M | 508K |
| Sphere Entertainment Co | SPHR | Shares | $8.6M | 73K |
| Ambarella Inc | Shares | $5.9M | 115K | |
| Applovin Corp | APP | Shares | $5.8M | 14K |
| Digital Rlty Tr Inc | DLR | Shares | $5.4M | 30K |
| Astera Labs Inc | ALAB | Shares | $5.2M | 47K |
| Osi Systems Inc | OSIS | Shares | $5.1M | 19K |
| Equinix Inc | EQIX | Shares | $5.0M | 5K |
| Palantir Technologies Inc | PLTR | Shares | $4.3M | 29K |
| Snowflake Inc | SNOW | Shares | $4.0M | 26K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.