Shannon River Fund Management
Latest statistics and disclosures from Shannon River Fund Management's latest quarterly 13F-HR filing:
- Top 5 stock holdings are PEGA, TSEM, IDCC, WIX, FLEX, and represent 51.31% of Shannon River Fund Management's stock portfolio.
- Added to shares of these 9 stocks: FORM (+$35M), FROG (+$31M), CLH (+$27M), WIX (+$17M), LRN (+$12M), NCNO (+$9.2M), TSM, BLZE, CWAN.
- Started 5 new stock positions in CLH, BLZE, TSM, LRN, FORM.
- Reduced shares in these 10 stocks: IWM (-$65M), PEGA (-$40M), COHR (-$38M), TSEM (-$37M), FLEX (-$26M), AFRM (-$25M), MRVL (-$24M), CART (-$21M), IDCC (-$20M), ESTC (-$16M).
- Sold out of its positions in AFRM, IWM, CART, MIR, NATL, U, PGY, ESTC.
- Shannon River Fund Management was a net seller of stock by $-247M.
- Shannon River Fund Management has $621M in assets under management (AUM), dropping by -17.39%.
- Central Index Key (CIK): 0001301050
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Portfolio Holdings for Shannon River Fund Management
Shannon River Fund Management holds 20 positions in its portfolio as reported in the September 2025 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Pegasystems (PEGA) | 12.8 | $80M | -33% | 1.4M | 57.50 |
|
| Tower Semiconductor Shs New (TSEM) | 11.2 | $70M | -34% | 962k | 72.30 |
|
| InterDigital (IDCC) | 9.9 | $62M | -24% | 179k | 345.23 |
|
| Wix.com SHS (WIX) | 9.4 | $59M | +42% | 330k | 177.63 |
|
| Flex Ord (FLEX) | 7.9 | $49M | -34% | 849k | 57.97 |
|
| Ncino (NCNO) | 6.9 | $43M | +27% | 1.6M | 27.11 |
|
| Jfrog Ord Shs (FROG) | 6.6 | $41M | +298% | 864k | 47.33 |
|
| Marvell Technology (MRVL) | 5.7 | $36M | -40% | 424k | 84.07 |
|
| FormFactor (FORM) | 5.7 | $35M | NEW | 968k | 36.42 |
|
| Guidewire Software (GWRE) | 4.7 | $29M | -16% | 126k | 229.86 |
|
| Clean Harbors (CLH) | 4.3 | $27M | NEW | 116k | 232.22 |
|
| Docusign (DOCU) | 3.3 | $20M | -13% | 284k | 72.09 |
|
| Credo Technology Group Holdi Ordinary Shares (CRDO) | 2.0 | $13M | -54% | 87k | 145.61 |
|
| Stride (LRN) | 2.0 | $12M | NEW | 83k | 148.94 |
|
| Clearwater Analytics Hldgs I Cl A (CWAN) | 2.0 | $12M | 678k | 18.02 |
|
|
| Palantir Technologies Cl A (PLTR) | 1.7 | $10M | -58% | 57k | 182.42 |
|
| Ccc Intelligent Solutions Holdings (CCCS) | 1.6 | $9.8M | 1.1M | 9.11 |
|
|
| Coherent Corp (COHR) | 1.5 | $9.6M | -79% | 89k | 107.72 |
|
| Taiwan Semiconductor Mfg Sponsored Ads (TSM) | 0.4 | $2.4M | NEW | 8.7k | 279.29 |
|
| Backblaze Com Cl A (BLZE) | 0.3 | $2.1M | NEW | 229k | 9.28 |
|
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 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
- Shannon River Fund Management 2022 Q1 restated filed July 20, 2022
- Shannon River Fund Management 2022 Q1 filed May 16, 2022