Shannon River Fund Management LLC
Filing Date
Global Rank
#1,830
/ 8,700
▲ 1599
Top Industry
Semiconductors
18.9%
Period ended 2 months ago
Filed Aug 13, 2026 · 31d
26 quarters · since Mar 2020
Portfolio Concentration
37 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026Top Position
8.9%
−8.0 pts
Top 5
29.1%
−18.4 pts
Top 10
49.6%
−17.1 pts
HHI
392
Diversified−297
Portfolio Trend
26 quarters · across all stocks
Sector Breakdown
As of Jun 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 72.3% | $810,380,641 |
| Communication Services | 7.8% | $86,846,134 |
| Industrials | 5.2% | $58,760,769 |
| Consumer Cyclical | 4.3% | $47,731,967 |
| Healthcare | 4.2% | $46,581,592 |
| Consumer Defensive | 3.4% | $38,070,133 |
| Unclassified | 1.4% | $16,082,312 |
| Real Estate | 1.4% | $15,940,239 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased
12 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| HNGE | Hinge Health, Inc. | +144,042 | 561,224 | $46,581,592 | |
| IDCC | InterDigital, Inc. | +130,284 | 184,388 | $52,205,774 | |
| EXTR | Extreme Networks Inc | +111,034 | 1,424,095 | $46,097,955 | |
| CLS | Celestica Inc | +86,469 | 139,964 | $51,058,867 | |
| FLEX | Flex Ltd. | +68,611 | 379,834 | $61,559,696 | |
| DLR | Digital Realty Trust, Inc. | +58,926 | 88,764 | $15,940,239 | |
| GWRE | Guidewire Software, Inc. | +50,367 | 113,230 | $13,932,951 | |
| COHR | Coherent Corp. | +41,378 | 129,283 | $50,998,265 | |
| LION | Lionsgate Studios Corp. | +9,511 | 1,050,445 | $16,082,312 | |
| FFIV | F5, Inc. | +1,062 | 51,258 | $21,321,277 | |
| ABNB | Airbnb, Inc. | +830 | 247,836 | $35,465,331 | |
| SPHR | Sphere Entertainment Co. | +533 | 73,878 | $12,783,110 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarter
22 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| AMD | Advanced Micro Devices Inc | 105,751 | $61,431,813 | |
| KLIC | Kulicke & Soffa Industries Inc | 334,781 | $44,780,306 | |
| TWLO | Twilio Inc | 201,352 | $41,544,958 | |
| CIEN | Ciena Corp | 81,298 | $39,881,546 | |
| QNT | Quantinuum Inc. | 469,355 | $38,365,077 | |
| UTI | Universal Technical Institute Inc | 890,113 | $38,070,133 | |
| TTWO | Take Two Interactive Software Inc | 138,029 | $34,504,489 | |
| OUST | Ouster, Inc. | 449,264 | $28,087,985 | |
| PDFS | Pdf Solutions Inc | 369,776 | $26,176,443 | |
| NOK | Nokia Corp | 1,906,902 | $25,323,658 | |
| ALNT | Allient Inc | 220,237 | $22,668,994 | |
| RKLB | Rocket Lab Corp | 221,143 | $22,479,185 | |
| DY | Dycom Industries Inc | 39,473 | $19,957,154 | |
| CIFR | Cipher Digital Inc. | 667,931 | $16,364,309 | |
| GLBE | Global-E Online Ltd. | 353,200 | $12,266,636 | |
| AMPX | Amprius Technologies, Inc. | 838,887 | $11,626,973 | |
| APLD | Applied Digital Corp. | 265,474 | $9,902,180 | |
| NET | Cloudflare, Inc. | 23,589 | $5,785,909 | |
| AMKR | Amkor Technology, Inc. | 65,895 | $5,682,125 | |
| MU | Micron Technology Inc | 4,484 | $5,175,836 | |
| BW | Babcock & Wilcox Enterprises, Inc. | 333,153 | $4,697,457 | |
| MXL | Maxlinear, Inc | 27,377 | $3,505,077 | |
| No positions match the current search. | ||||
Sold Out
Positions the filer fully exited
13 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| MRVL | Marvell Technology, Inc. | 563,573 | $55,821,905 | |
| AXON | Axon Enterprise, Inc. | 47,442 | $20,148,142 | |
| TOST | Toast, Inc. | 732,027 | $19,406,035 | |
| LGN | Legence Corp. | 337,638 | $19,063,041 | |
| ADTN | ADTRAN Holdings, Inc. | 1,219,976 | $15,347,298 | |
| UUUU | Energy Fuels Inc | 507,555 | $9,262,878 | |
| AMBA | Ambarella Inc | 114,940 | $5,917,111 | |
| APP | AppLovin Corp | 14,480 | $5,763,040 | |
| ALAB | Astera Labs, Inc. | 47,394 | $5,194,382 | |
| OSIS | Osi Systems Inc | 19,274 | $5,117,439 | |
| EQIX | Equinix Inc | 5,102 | $5,001,184 | |
| PLTR | Palantir Technologies Inc. | 29,150 | $4,264,062 | |
| SNOW | Snowflake Inc. | 26,377 | $3,978,179 | |
| No positions match the current search. | ||||
37 tracked positions ·
$1,120,393,787 total
· filing declares
37 positions · $1,120,393,801
· as of Jun 30, 2026
All sectors
Communication Services
Consumer Cyclical
Consumer Defensive
Healthcare
Industrials
Real Estate
Technology
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| TSEM |
Tower Semiconductor Ltd
Technology
|
Reduced | 382,933 | $99,807,657 | 8.91% | |
| FLEX |
Flex Ltd.
Technology
|
Added | 379,834 | $61,559,696 | 5.49% | |
| AMD |
Advanced Micro Devices Inc
Technology
|
NEW | 105,751 | $61,431,813 | 5.48% | |
| IDCC |
InterDigital, Inc.
Technology
|
Added | 184,388 | $52,205,774 | 4.66% | |
| CLS |
Celestica Inc
Technology
|
Added | 139,964 | $51,058,867 | 4.56% | |
| COHR |
Coherent Corp.
Technology
|
Added | 129,283 | $50,998,265 | 4.55% | |
| HNGE |
Hinge Health, Inc.
Healthcare
|
Added | 561,224 | $46,581,592 | 4.16% | |
| EXTR |
Extreme Networks Inc
Technology
|
Added | 1,424,095 | $46,097,955 | 4.11% | |
| KLIC |
Kulicke & Soffa Industries Inc
Technology
|
NEW | 334,781 | $44,780,306 | 4.00% | |
| TWLO |
Twilio Inc
Technology
|
NEW | 201,352 | $41,544,958 | 3.71% | |
| CIEN |
Ciena Corp
Technology
|
NEW | 81,298 | $39,881,546 | 3.56% | |
| LYV |
Live Nation Entertainment, Inc.
Communication Services
|
Reduced | 216,037 | $39,558,535 | 3.53% | |
| RMBS |
Rambus Inc
Technology
|
Reduced | 291,713 | $38,721,983 | 3.46% | |
| QNT |
Quantinuum Inc.
Technology
|
NEW | 469,355 | $38,365,077 | 3.42% | |
| UTI |
Universal Technical Institute Inc
Consumer Defensive
|
NEW | 890,113 | $38,070,133 | 3.40% | |
| ABNB |
Airbnb, Inc.
Consumer Cyclical
|
Added | 247,836 | $35,465,331 | 3.17% | |
| TTWO |
Take Two Interactive Software Inc
Communication Services
|
NEW | 138,029 | $34,504,489 | 3.08% | |
| OUST |
Ouster, Inc.
Technology
|
NEW | 449,264 | $28,087,985 | 2.51% | |
| PDFS |
Pdf Solutions Inc
Technology
|
NEW | 369,776 | $26,176,443 | 2.34% | |
| NOK |
Nokia Corp
Technology
|
NEW | 1,906,902 | $25,323,658 | 2.26% | |
| ALNT |
Allient Inc
Technology
|
NEW | 220,237 | $22,668,994 | 2.02% | |
| RKLB |
Rocket Lab Corp
Industrials
|
NEW | 221,143 | $22,479,185 | 2.01% | |
| FFIV |
F5, Inc.
Technology
|
Added | 51,258 | $21,321,277 | 1.90% | |
| DY |
Dycom Industries Inc
Industrials
|
NEW | 39,473 | $19,957,154 | 1.78% | |
| CIFR |
Cipher Digital Inc.
Technology
|
NEW | 667,931 | $16,364,309 | 1.46% | |
| LION |
Lionsgate Studios Corp.
|
Added | 1,050,445 | $16,082,312 | 1.44% | |
| DLR |
Digital Realty Trust, Inc.
Real Estate
|
Added | 88,764 | $15,940,239 | 1.42% | |
| GWRE |
Guidewire Software, Inc.
Technology
|
Added | 113,230 | $13,932,951 | 1.24% | |
| SPHR |
Sphere Entertainment Co.
Communication Services
|
Added | 73,878 | $12,783,110 | 1.14% | |
| GLBE |
Global-E Online Ltd.
Consumer Cyclical
|
NEW | 353,200 | $12,266,636 | 1.09% | |
| AMPX |
Amprius Technologies, Inc.
Industrials
|
NEW | 838,887 | $11,626,973 | 1.04% | |
| APLD |
Applied Digital Corp.
Technology
|
NEW | 265,474 | $9,902,180 | 0.88% | |
| NET |
Cloudflare, Inc.
Technology
|
NEW | 23,589 | $5,785,909 | 0.52% | |
| AMKR |
Amkor Technology, Inc.
Technology
|
NEW | 65,895 | $5,682,125 | 0.51% | |
| MU |
Micron Technology Inc
Technology
|
NEW | 4,484 | $5,175,836 | 0.46% | |
| BW |
Babcock & Wilcox Enterprises, Inc.
Industrials
|
NEW | 333,153 | $4,697,457 | 0.42% | |
| MXL |
Maxlinear, Inc
Technology
|
NEW | 27,377 | $3,505,077 | 0.31% |
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.