Shannon River Fund Management
Latest statistics and disclosures from Shannon River Fund Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are TSEM, MRVL, LYV, ABNB, RMBS, and represent 47.53% of Shannon River Fund Management's stock portfolio.
- Added to shares of these 10 stocks: ABNB (+$31M), RMBS (+$29M), TOST (+$19M), MRVL (+$18M), ADTN (+$15M), FFIV (+$15M), AXON (+$11M), LION (+$10M), UUUU (+$9.3M), SPHR (+$8.6M).
- Started 13 new stock positions in TOST, EQIX, OSIS, LION, ABNB, ADTN, DLR, UUUU, SPHR, APP. RMBS, SNOW, FFIV.
- Reduced shares in these 10 stocks: PEGA (-$62M), U (-$47M), CWAN (-$30M), NCNO (-$29M), KVYO (-$24M), CRDO (-$22M), COHR (-$19M), TSEM (-$17M), CLS (-$15M), ALAB (-$13M).
- Sold out of its positions in CCC, CWAN, DOCU, KVYO, MU, NCNO, PEGA, QCOM, U, CRDO. WIX.
- Shannon River Fund Management was a net seller of stock by $-139M.
- Shannon River Fund Management has $524M in assets under management (AUM), dropping by -17.79%.
- Central Index Key (CIK): 0001301050
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Portfolio Holdings for Shannon River Fund Management
Shannon River Fund Management holds 28 positions in its portfolio as reported in the March 2026 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Tower Semiconductor Shs New (TSEM) | 16.9 | $89M | -16% | 504k | 175.48 |
|
| Marvell Technology (MRVL) | 10.7 | $56M | +49% | 564k | 99.05 |
|
| Live Nation Entertainment (LYV) | 8.6 | $45M | +15% | 294k | 152.51 |
|
| Airbnb Com Cl A (ABNB) | 6.0 | $31M | NEW | 247k | 126.28 |
|
| Rambus (RMBS) | 5.5 | $29M | NEW | 334k | 86.03 |
|
| Coherent Corp (COHR) | 4.0 | $21M | -47% | 88k | 238.21 |
|
| Flextronics Intl Ord (FLEX) | 3.9 | $20M | 311k | 65.46 |
|
|
| Axon Enterprise (AXON) | 3.8 | $20M | +129% | 47k | 424.69 |
|
| Extreme Networks (EXTR) | 3.8 | $20M | -31% | 1.3M | 15.08 |
|
| Toast Cl A (TOST) | 3.7 | $19M | NEW | 732k | 26.51 |
|
| Legence Corp Cl A (LGN) | 3.6 | $19M | 338k | 56.46 |
|
|
| InterDigital (IDCC) | 3.1 | $16M | 54k | 302.00 |
|
|
| Hinge Health Cl A (HNGE) | 3.1 | $16M | +78% | 417k | 38.56 |
|
| Adtran Holdings (ADTN) | 2.9 | $15M | NEW | 1.2M | 12.58 |
|
| Celestica (CLS) | 2.9 | $15M | -50% | 54k | 281.68 |
|
| F5 Networks (FFIV) | 2.8 | $15M | NEW | 50k | 289.33 |
|
| Lionsgate Studios Corp (LION) | 1.9 | $10M | NEW | 1.0M | 9.59 |
|
| Guidewire Software (GWRE) | 1.8 | $9.4M | -50% | 63k | 149.56 |
|
| Energy Fuels Com New (UUUU) | 1.8 | $9.3M | NEW | 508k | 18.25 |
|
| Sphere Entertainment Cl A (SPHR) | 1.6 | $8.6M | NEW | 73k | 117.40 |
|
| Ambarella SHS (AMBA) | 1.1 | $5.9M | -61% | 115k | 51.48 |
|
| Applovin Corp Com Cl A (APP) | 1.1 | $5.8M | NEW | 15k | 398.00 |
|
| Digital Realty Trust (DLR) | 1.0 | $5.4M | NEW | 30k | 180.21 |
|
| Astera Labs (ALAB) | 1.0 | $5.2M | -71% | 47k | 109.60 |
|
| OSI Systems (OSIS) | 1.0 | $5.1M | NEW | 19k | 265.51 |
|
| Equinix (EQIX) | 1.0 | $5.0M | NEW | 5.1k | 980.24 |
|
| Palantir Technologies Cl A (PLTR) | 0.8 | $4.3M | 29k | 146.28 |
|
|
| Snowflake Com Shs (SNOW) | 0.8 | $4.0M | NEW | 26k | 150.82 |
|
Past Filings by Shannon River Fund Management
SEC 13F filings are viewable for Shannon River Fund Management going back to 2010
- Shannon River Fund Management 2026 Q1 filed May 14, 2026
- Shannon River Fund Management 2025 Q4 filed Feb. 17, 2026
- Shannon River Fund Management 2025 Q3 filed Nov. 13, 2025
- Shannon River Fund Management 2025 Q2 filed Aug. 13, 2025
- Shannon River Fund Management 2025 Q1 filed May 14, 2025
- Shannon River Fund Management 2024 Q4 filed Feb. 13, 2025
- Shannon River Fund Management 2024 Q3 filed Nov. 13, 2024
- Shannon River Fund Management 2024 Q2 filed Aug. 13, 2024
- Shannon River Fund Management 2024 Q1 filed May 14, 2024
- Shannon River Fund Management 2023 Q4 filed Feb. 13, 2024
- Shannon River Fund Management 2023 Q3 filed Nov. 13, 2023
- Shannon River Fund Management 2023 Q2 filed Aug. 11, 2023
- Shannon River Fund Management 2023 Q1 filed May 12, 2023
- Shannon River Fund Management 2022 Q4 filed Feb. 13, 2023
- Shannon River Fund Management 2022 Q3 filed Nov. 14, 2022
- Shannon River Fund Management 2022 Q2 filed Aug. 15, 2022