The largest holder of Semtech stock is BlackRock Advisors LLC, with 9.3 million shares (10.31% of the company), worth about $1.23 billion as of September 25, 2026. The 10 largest holders together own 42.8%.
In Q2 2026, 614 institutional holdings reports listed shares worth $15.10 billion.
Insiders reported 100 transactions in the last two years: 36 sales worth $9.92 million and no purchases. The newest one on file is from May 1, 2026 (Hou Hong Q, Chief Executive Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 1, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| BlackRock Advisors LLC | 9.3 million | 10.31% | $1.2B |
| Vanguard Portfolio Management LLC | 5.3 million | 5.94% | $708.0M |
| Vanguard Capital Management LLC | 4.2 million | 4.68% | $558.0M |
| Ameriprise Trust Co. | 3.5 million | 3.84% | $459.0M |
| State Street Corporation | 3.4 million | 3.77% | $451.0M |
| Jane Street Group LLC | 3.4 million | 3.73% | $446.0M |
| Capital Research & Management Co. (Global Investors) | 3.0 million | 3.29% | $393.0M |
| Geode Capital Management LLC | 2.3 million | 2.51% | $300.0M |
| Hood River Capital Management LLC | 2.3 million | 2.51% | $299.0M |
| Eaton Vance Management | 2.0 million | 2.19% | $262.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 614 | – | $15.1B |
| Q1 2026 | 464 | – | $7.7B |
| Q4 2025 | 434 | – | $7.6B |
| Q3 2025 | 386 | – | $7.5B |
| Q2 2025 | 351 | 104.0 million | $4.7B |
| Q1 2025 | 353 | 97.7 million | $3.4B |
| Q4 2024 | 391 | 96.0 million | $5.9B |
| Q3 2024 | 305 | 85.4 million | $3.9B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Hou Hong Q | May 1, 2026 | Chief Executive Officer | Sale at price 103.01 per share. | $206,020 |
| Walsh Paul V Jr | Apr 22, 2026 | Director | Sale at price 105.93 per share. | $52,965 |
| Hou Hong Q | Apr 10, 2026 | Chief Executive Officer | Sale at price 90.11 per share. | $180,220 |
| Burvill Martin S. J. | Apr 9, 2026 | Director | Sale at price 88.98 per share. | $222,449 |
| Silberstein Asaf | Apr 6, 2026 | Chief Operating Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Green Jason Elliot | Apr 6, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Lin Mark | Apr 6, 2026 | Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Wilson John Michael | Apr 6, 2026 | Chief Technology Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Hou Hong Q | Apr 6, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Lin Mark | Apr 1, 2026 | Chief Financial Officer | -- | – |
| Hou Hong Q | Apr 1, 2026 | Chief Executive Officer | -- | – |
| Green Jason Elliot | Apr 1, 2026 | Officer | Sale at price 81.73 per share. | $612,992 |
Newest 12 of 100 insider transactions in the last two years.
BlackRock Advisors LLC, with 10.31% of the company (as of September 25, 2026). Next: Vanguard Portfolio Management LLC (5.94%) and Vanguard Capital Management LLC (4.68%).
614 institutional holdings reports listed Semtech shares in Q2 2026 worth $15.10 billion.
In the last two years insiders reported 36 sales and no purchases (100 transactions in all); the newest on file is from May 1, 2026.