Holders — by stockHoldings — by fund
Shannon River Fund Management LLC
Everything this manager disclosed owning in US-listed stocks — its complete Form 13F portfolio · as of 2026-06-30 · filed with the SEC up to 45 days after quarter end · CIK 0001301050
$1.12B
disclosed book value
37
positions
8.9%
largest position share
Positions, as of 2026-06-30
top 37 of 37 · 13F covers long US-listed positions only — cash, bonds, private and foreign stakes are not disclosed · PUT/CALL tags = options positions (share-equivalents), not shares held
| # | Issuer | Shares | Value | % of book |
|---|---|---|---|---|
| 1 | TSEMTOWER SEMICONDUCTOR LTD | 382,933 | $99.8M | 8.9% |
| 2 | FLEXFLEX LTD | 379,834 | $61.6M | 5.5% |
| 3 | AMDADVANCED MICRO DEVICES INC | 105,751 | $61.4M | 5.5% |
| 4 | IDCCINTERDIGITAL INC | 184,388 | $52.2M | 4.7% |
| 5 | CLSCELESTICA INC | 139,964 | $51.1M | 4.6% |
| 6 | COHRCOHERENT CORP | 129,283 | $51.0M | 4.6% |
| 7 | HNGEHINGE HEALTH INC | 561,224 | $46.6M | 4.2% |
| 8 | EXTREXTREME NETWORKS INC | 1.4M | $46.1M | 4.1% |
| 9 | KLICKULICKE & SOFFA INDS INC | 334,781 | $44.8M | 4% |
| 10 | TWLOTWILIO INC | 201,352 | $41.5M | 3.7% |
| 11 | CIENCIENA CORP | 81,298 | $39.9M | 3.6% |
| 12 | LYVLIVE NATION ENTERTAINMENT IN | 216,037 | $39.6M | 3.5% |
| 13 | RMBSRAMBUS INC DEL | 291,713 | $38.7M | 3.5% |
| 14 | QNTQUANTINUUM INC | 469,355 | $38.4M | 3.4% |
| 15 | UTIUNIVERSAL TECHNICAL INST INC | 890,113 | $38.1M | 3.4% |
| 16 | ABNBAIRBNB INC | 247,836 | $35.5M | 3.2% |
| 17 | TTWOTAKE-TWO INTERACTIVE SOFTWAR | 138,029 | $34.5M | 3.1% |
| 18 | OUSTOUSTER INC | 449,264 | $28.1M | 2.5% |
| 19 | PDFSPDF SOLUTIONS INC | 369,776 | $26.2M | 2.3% |
| 20 | NOKNOKIA CORP | 1.9M | $25.3M | 2.3% |
| 21 | ALNTALLIENT INC | 220,237 | $22.7M | 2% |
| 22 | RKLBROCKET LAB CORP | 221,143 | $22.5M | 2% |
| 23 | FFIVF5 INC | 51,258 | $21.3M | 1.9% |
| 24 | DYDYCOM INDS INC | 39,473 | $20.0M | 1.8% |
| 25 | CIFRCIPHER DIGITAL INC | 667,931 | $16.4M | 1.5% |
| 26 | LIONLIONSGATE STUDIOS CORP | 1.1M | $16.1M | 1.4% |
| 27 | DLRDIGITAL RLTY TR INC | 88,764 | $15.9M | 1.4% |
| 28 | GWREGUIDEWIRE SOFTWARE INC | 113,230 | $13.9M | 1.2% |
| 29 | SPHRSPHERE ENTERTAINMENT CO | 73,878 | $12.8M | 1.1% |
| 30 | GLBEGLOBAL-E ONLINE LTD | 353,200 | $12.3M | 1.1% |
| 31 | AMPXAMPRIUS TECHNOLOGIES INC | 838,887 | $11.6M | 1% |
| 32 | APLDAPPLIED DIGITAL CORP | 265,474 | $9.9M | 0.9% |
| 33 | NETCLOUDFLARE INC | 23,589 | $5.8M | 0.5% |
| 34 | AMKRAMKOR TECHNOLOGY INC | 65,895 | $5.7M | 0.5% |
| 35 | MUMICRON TECHNOLOGY INC | 4,484 | $5.2M | 0.5% |
| 36 | BWBABCOCK & WILCOX ENTERPRISES | 333,153 | $4.7M | 0.4% |
| 37 | MXLMAXLINEAR INC | 27,377 | $3.5M | 0.3% |
Source: SEC Form 13F-HR, reporting period 2026-06-30. Values are the manager's filed June-30-style quarter-end marks, not live prices. Research, not investment advice.