The largest holder of Synopsys stock is Vanguard Capital Management LLC, with 12.5 million shares (6.53% of the company), worth about $5.50 billion as of September 25, 2026. The 10 largest holders together own 34.9%.
In Q2 2026, 1,532 institutional holdings reports listed shares worth $80.30 billion.
Insiders reported 73 transactions in the last two years: 12 sales worth $54.50 million and 1 purchase. The newest one on file is from April 16, 2026 (Shimer Peter A, Director).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through April 16, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Vanguard Capital Management LLC | 12.5 million | 6.53% | $5.5B |
| BlackRock Advisors LLC | 11.7 million | 6.09% | $5.1B |
| State Street Corporation | 9.1 million | 4.74% | $4.0B |
| Invesco Advisers, Inc. | 6.0 million | 3.15% | $2.7B |
| Fidelity Management & Research Co. LLC | 6.0 million | 3.12% | $2.6B |
| Nvidia Corporation | 4.8 million | 2.52% | $2.1B |
| Geode Capital Management LLC | 4.5 million | 2.35% | $2.0B |
| Vanguard Portfolio Management LLC | 4.5 million | 2.35% | $2.0B |
| BlackRock Life Ltd. | 4.1 million | 2.14% | $1.8B |
| Eaton Vance Management | 3.8 million | 1.97% | $1.7B |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,532 | – | $80.3B |
| Q1 2026 | 1,484 | 171.0 million | $68.0B |
| Q4 2025 | 1,496 | 174.0 million | $81.8B |
| Q3 2025 | 1,528 | 171.0 million | $84.1B |
| Q2 2025 | 1,377 | 142.0 million | $72.7B |
| Q1 2025 | 1,357 | 138.0 million | $59.0B |
| Q4 2024 | 1,369 | 133.0 million | $64.8B |
| Q3 2024 | 1,326 | 137.0 million | $69.2B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Shimer Peter A | Apr 16, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Painter Robert G | Apr 16, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Vijayaraghavan Ravi K | Apr 16, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Chaffin Janice Durbin | Apr 16, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Schwarz John George | Apr 16, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Sargent Jeannine Perchard | Apr 16, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Johnson Mercedes | Apr 16, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Chizen Bruce R | Apr 16, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| De Geus Aart J | Mar 13, 2026 | Officer and Director | -- | – |
| Ghazi Sassine E | Mar 13, 2026 | Chief Executive Officer | -- | – |
| Glaser Shelagh M | Mar 13, 2026 | Chief Financial Officer | -- | – |
| Kankanwadi Sudhindra | Mar 13, 2026 | Officer | -- | – |
Newest 12 of 73 insider transactions in the last two years.
Vanguard Capital Management LLC, with 6.53% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (6.09%) and State Street Corporation (4.74%).
1,532 institutional holdings reports listed Synopsys shares in Q2 2026 worth $80.30 billion.
In the last two years insiders reported 12 sales and 1 purchase (73 transactions in all); the newest on file is from April 16, 2026.