Shannon River Fund Management
NEW YORK, NYfiles as Shannon River Fund Management LLC
$1.1bn in 37 US stocks at the end of 30 June 2026. The top 10 are 49.6% of the money. It changed about 53.5% of the portfolio this quarter.
Value
$1.1bn
Stocks
37
Top 10 share
49.6%
Turnover
53.5%
What changed this quarter
New
Bought for the first time this quarter.
- Advanced Micro DevicesAMD5.5% of the fund
- Kulicke & Soffa IndustriesKLIC4.0% of the fund
- TwilioTWLO3.7% of the fund
- CienaCIEN3.6% of the fund
- QuantinuumQNT3.4% of the fund
- Universal Technical InstituteUTI3.4% of the fund
- Take TWO Interactive SoftwareTTWO3.1% of the fund
- OusterOUST2.5% of the fund
- PDF SolutionsPDFS2.3% of the fund
- NokiaNOK2.3% of the fund
- AllientALNT2.0% of the fund
- Rocket LabRKLB2.0% of the fund
- Dycom IndustriesDY1.8% of the fund
- Cipher DigitalCIFR1.5% of the fund
- Global-E OnlineGLBE1.1% of the fund
- Amprius TechnologiesAMPX1.0% of the fund
- Applied DigitalAPLD0.9% of the fund
- CloudflareNET0.5% of the fund
- Amkor TechnologyAMKR0.5% of the fund
- Micron TechnologyMU0.5% of the fund
- Babcock & Wilcox EnterprisesBW0.4% of the fund
- MaxlinearMXL0.3% of the fund
Added
Bought more of a stock they already held.
- FlexFLEX5.5% of the fund+22%
- InterDigitalIDCC4.7% of the fund+241%
- CelesticaCLS4.6% of the fund+162%
- CoherentCOHR4.6% of the fund+47%
- Hinge HealthHNGE4.2% of the fund+35%
- Extreme NetworksEXTR4.1% of the fund+8%
- F5FFIV1.9% of the fund+2%
- Digital Realty TrustDLR1.4% of the fund+197%
- Guidewire SoftwareGWRE1.2% of the fund+80%
Cut
Sold some of their stake.
- Tower SemiconductorTSEM8.9% of the fund-24%
- Live Nation EntertainmentLYV3.5% of the fund-27%
- RambusRMBS3.5% of the fund-13%
Sold out
Sold their entire stake.
- Marvell TechnologyMRVL-100%
- Axon EnterpriseAXON-100%
- ToastTOST-100%
- LegenceLGN-100%
- ADTRAN HoldingsADTN-100%
- Energy FuelsUUUU-100%
- AmbarellaAMBA-100%
- AppLovinAPP-100%
- Astera LabsALAB-100%
- OSI SystemsOSIS-100%
- EquinixEQIX-100%
- Palantir TechnologiesPLTR-100%
- SnowflakeSNOW-100%
Holdings
- QuantinuumQNT
- Share
- 3.4%
- Value
- $38m
- Shares
- 469,355
New
- NokiaNOK
- Share
- 2.3%
- Value
- $25m
- Shares
- 1,906,902
New
| Company | Share of fund | Value | Shares | Change |
|---|---|---|---|---|
| Tower SemiconductorTSEM | 8.9% | $100m | 382,933 | -24% |
| FlexFLEX | 5.5% | $62m | 379,834 | +22% |
| Advanced Micro DevicesAMD | 5.5% | $61m | 105,751 | New |
| InterDigitalIDCC | 4.7% | $52m | 184,388 | +241% |
| CelesticaCLS | 4.6% | $51m | 139,964 | +162% |
| CoherentCOHR | 4.6% | $51m | 129,283 | +47% |
| Hinge HealthHNGE | 4.2% | $47m | 561,224 | +35% |
| Extreme NetworksEXTR | 4.1% | $46m | 1,424,095 | +8% |
| Kulicke & Soffa IndustriesKLIC | 4.0% | $45m | 334,781 | New |
| TwilioTWLO | 3.7% | $42m | 201,352 | New |
| CienaCIEN | 3.6% | $40m | 81,298 | New |
| Live Nation EntertainmentLYV | 3.5% | $40m | 216,037 | -27% |
| RambusRMBS | 3.5% | $39m | 291,713 | -13% |
| QuantinuumQNT | 3.4% | $38m | 469,355 | New |
| Universal Technical InstituteUTI | 3.4% | $38m | 890,113 | New |
| AirbnbABNB | 3.2% | $35m | 247,836 | Held |
| Take TWO Interactive SoftwareTTWO | 3.1% | $35m | 138,029 | New |
| OusterOUST | 2.5% | $28m | 449,264 | New |
| PDF SolutionsPDFS | 2.3% | $26m | 369,776 | New |
| NokiaNOK | 2.3% | $25m | 1,906,902 | New |
| AllientALNT | 2.0% | $23m | 220,237 | New |
| Rocket LabRKLB | 2.0% | $22m | 221,143 | New |
| F5FFIV | 1.9% | $21m | 51,258 | +2% |
| Dycom IndustriesDY | 1.8% | $20m | 39,473 | New |
| Cipher DigitalCIFR | 1.5% | $16m | 667,931 | New |
| Lionsgate StudiosLION | 1.4% | $16m | 1,050,445 | Held |
| Digital Realty TrustDLR | 1.4% | $16m | 88,764 | +197% |
| Guidewire SoftwareGWRE | 1.2% | $14m | 113,230 | +80% |
| Sphere EntertainmentSPHR | 1.1% | $13m | 73,878 | Held |
| Global-E OnlineGLBE | 1.1% | $12m | 353,200 | New |
| Amprius TechnologiesAMPX | 1.0% | $12m | 838,887 | New |
| Applied DigitalAPLD | 0.9% | $10m | 265,474 | New |
| CloudflareNET | 0.5% | $6m | 23,589 | New |
| Amkor TechnologyAMKR | 0.5% | $6m | 65,895 | New |
| Micron TechnologyMU | 0.5% | $5m | 4,484 | New |
| Babcock & Wilcox EnterprisesBW | 0.4% | $5m | 333,153 | New |
| MaxlinearMXL | 0.3% | $4m | 27,377 | New |
Over time and by industry
Value over time
Jun '25
Dec '25
Jun '26
Value is up 72.5% since 30 June 2025.
Where the money is
Technology70.4%
Industrials8.7%
Media & telecom8.0%
Retail & consumer7.7%
Financial services1.5%
Real estate1.4%
Other2.3%
From the fund's 13F filings. They list US stocks and options only, 45 days after each quarter, and leave out cash, bonds, shorts and foreign shares.