Managers / Q1 2026
Shannon River Fund Management LLC
CIK 0001301050 · 850 THIRD AVENUE, 13TH FLOOR, NEW YORK, NY, 10022 · 212 331 6750
Reported Value
$524M
Q1 2026
Positions
28
Filings on Record
34
2019–present window
Filed
May 14, 2026
original filing
Summary
Shannon River Fund Management Llc reported $524M in U.S.-listed holdings across 28 positions for Q1 2026.
Its largest position, Tower Semiconductor, represents 16.9% of the portfolio.
Compared with Q4 2025, the fund opened 13 new positions and exited 11.
Reported Value by Quarter
13F Reported Value
Portfolio Composition
By security type
Composition data arrives with ticker enrichment.
Quarter-over-Quarter Changes full breakdown →
Holdings — Q1 2026
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $524M | 28 | May 14, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $638M | 26 | Feb 17, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $621M | 20 | Nov 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $752M | 24 | Aug 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $383M | 14 | May 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $678M | 19 | Feb 13, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $715M | 19 | Nov 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $620M | 22 | Aug 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $449M | 18 | May 14, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $547M | 24 | Feb 13, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $503M | 16 | Nov 13, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $401M | 15 | Aug 11, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $443M | 27 | May 12, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $407.8B | 30 | Feb 13, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $233M | 30 | Nov 14, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $352M | 35 | Aug 15, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q1 2022 | $901M | 48 | May 16, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q4 2021 | $986M | 45 | Feb 14, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $1.4B | 57 | Nov 15, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $1.4B | 57 | Aug 16, 2021 | RESTATEMENT | changes · EDGAR ↗ |
| Q1 2021 | $1.5B | 57 | May 17, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $1.1B | 46 | Feb 16, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $832M | 33 | Nov 16, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $764M | 33 | Aug 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $592M | 26 | May 15, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $749M | 27 | Feb 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $576M | 24 | Nov 14, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $629M | 31 | Aug 14, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $573M | 30 | May 15, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q4 2018 | $352M | 28 | Feb 14, 2019 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.