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, FLEX, AMD, IDCC, CLS, and represent 29.10% of Shannon River Fund Management's stock portfolio.
- Added to shares of these 10 stocks: AMD (+$61M), KLIC (+$45M), TWLO (+$42M), CIEN (+$40M), Quantinuum Cl A Ord (+$38M), UTI (+$38M), IDCC (+$37M), TTWO (+$35M), CLS (+$32M), OUST (+$28M).
- Started 22 new stock positions in CIEN, AMPX, NET, CIFR, MU, UTI, KLIC, NOK, ALNT, OUST. PDFS, TWLO, RKLB, AMD, AMKR, TTWO, MXL, GLBE, BW, APLD, Quantinuum Cl A Ord, DY.
- Reduced shares in these 10 stocks: MRVL (-$56M), TSEM (-$32M), AXON (-$20M), TOST (-$19M), LGN (-$19M), ADTN (-$15M), LYV (-$14M), UUUU (-$9.3M), , APP (-$5.8M).
- Sold out of its positions in ADTN, APP, ALAB, AXON, UUUU, EQIX, LGN, MRVL, OSIS, PLTR. SNOW, TOST, AMBA.
- Shannon River Fund Management was a net buyer of stock by $421M.
- Shannon River Fund Management has $1.1B in assets under management (AUM), dropping by 113.78%.
- Central Index Key (CIK): 0001301050
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Portfolio Holdings for Shannon River Fund Management
Shannon River Fund Management holds 37 positions in its portfolio as reported in the June 2026 quarterly 13F filing
| Company (Ticker) | Portfolio Weight | Valued At | Change in Shares | Share Count | Share Price | |
|---|---|---|---|---|---|---|
| Tower Semiconductor Shs New (TSEM) | 8.9 | $100M | -24% | 383k | 260.64 |
|
| Flex Ord (FLEX) | 5.5 | $62M | +22% | 380k | 162.07 |
|
| Advanced Micro Devices (AMD) | 5.5 | $61M | NEW | 106k | 580.91 |
|
| InterDigital (IDCC) | 4.7 | $52M | +240% | 184k | 283.13 |
|
| Celestica (CLS) | 4.6 | $51M | +161% | 140k | 364.80 |
|
| Coherent Corp (COHR) | 4.6 | $51M | +47% | 129k | 394.47 |
|
| Hinge Health Cl A (HNGE) | 4.2 | $47M | +34% | 561k | 83.00 |
|
| Extreme Networks (EXTR) | 4.1 | $46M | +8% | 1.4M | 32.37 |
|
| Kulicke and Soffa Industries (KLIC) | 4.0 | $45M | NEW | 335k | 133.76 |
|
| Twilio Cl A (TWLO) | 3.7 | $42M | NEW | 201k | 206.33 |
|
| Ciena Corp Com New (CIEN) | 3.6 | $40M | NEW | 81k | 490.56 |
|
| Live Nation Entertainment (LYV) | 3.5 | $40M | -26% | 216k | 183.11 |
|
| Rambus (RMBS) | 3.5 | $39M | -12% | 292k | 132.74 |
|
| Quantinuum Cl A Com | 3.4 | $38M | NEW | 469k | 81.74 |
|
| Universal Technical Institute (UTI) | 3.4 | $38M | NEW | 890k | 42.77 |
|
| Airbnb Com Cl A (ABNB) | 3.2 | $36M | 248k | 143.10 |
|
|
| Take-Two Interactive Software (TTWO) | 3.1 | $35M | NEW | 138k | 249.98 |
|
| Ouster Com New (OUST) | 2.5 | $28M | NEW | 449k | 62.52 |
|
| PDF Solutions (PDFS) | 2.3 | $26M | NEW | 370k | 70.79 |
|
| Nokia Corp Sponsored Adr (NOK) | 2.3 | $25M | NEW | 1.9M | 13.28 |
|
| Allied Motion Technologies (ALNT) | 2.0 | $23M | NEW | 220k | 102.93 |
|
| Rocket Lab Corp (RKLB) | 2.0 | $23M | NEW | 221k | 101.65 |
|
| F5 Networks (FFIV) | 1.9 | $21M | +2% | 51k | 415.96 |
|
| Dycom Inds Com New (DY) | 1.8 | $20M | NEW | 40k | 505.59 |
|
| Cipher Mining (CIFR) | 1.5 | $16M | NEW | 668k | 24.50 |
|
| Lionsgate Studios Corp (LION) | 1.4 | $16M | 1.1M | 15.31 |
|
|
| Digital Realty Trust (DLR) | 1.4 | $16M | +197% | 89k | 179.58 |
|
| Guidewire Software (GWRE) | 1.2 | $14M | +80% | 113k | 123.05 |
|
| Sphere Entertainment Cl A (SPHR) | 1.1 | $13M | 74k | 173.03 |
|
|
| Global-e Online SHS (GLBE) | 1.1 | $12M | NEW | 353k | 34.73 |
|
| Amprius Technologies Common Stock (AMPX) | 1.0 | $12M | NEW | 839k | 13.86 |
|
| Applied Digital Corp Com New (APLD) | 0.9 | $9.9M | NEW | 266k | 37.30 |
|
| Cloudflare Cl A Com (NET) | 0.5 | $5.8M | NEW | 24k | 245.28 |
|
| Amkor Technology (AMKR) | 0.5 | $5.7M | NEW | 66k | 86.23 |
|
| Micron Technology (MU) | 0.5 | $5.2M | NEW | 4.5k | 1154.29 |
|
| Babcock & Wilcox Enterpr (BW) | 0.4 | $4.7M | NEW | 333k | 14.10 |
|
| MaxLinear (MXL) | 0.3 | $3.5M | NEW | 27k | 128.03 |
|
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 Q2 filed Aug. 13, 2026
- 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