The largest holder of Idex stock is Vanguard Capital Management LLC, with 4.8 million shares (6.57% of the company), worth about $1.11 billion as of September 25, 2026. The 10 largest holders together own 41.0%.
In Q2 2026, 711 institutional holdings reports listed shares worth $17.10 billion.
Insiders reported 44 transactions in the last two years: 2 sales worth $3.36 million and 2 purchases. The newest one on file is from May 11, 2026 (Ashleman Eric D, 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 11, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Vanguard Capital Management LLC | 4.8 million | 6.57% | $1.1B |
| BlackRock Advisors LLC | 4.4 million | 5.93% | $1.0B |
| Vanguard Portfolio Management LLC | 3.7 million | 5.07% | $854.0M |
| State Street Corporation | 3.3 million | 4.50% | $758.0M |
| PRIMECAP Management Co. | 3.3 million | 4.48% | $755.0M |
| Eaton Vance Management | 2.8 million | 3.83% | $645.0M |
| Millennium Management LLC | 2.4 million | 3.21% | $542.0M |
| Geode Capital Management LLC | 2.1 million | 2.85% | $480.0M |
| Nordea Investment Management AB (Denmark) | 1.8 million | 2.50% | $421.0M |
| Victory Capital Management, Inc. (Investment Management) | 1.5 million | 2.07% | $349.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 711 | – | $17.1B |
| Q1 2026 | 690 | 74.9 million | $14.2B |
| Q4 2025 | 645 | – | $13.8B |
| Q3 2025 | 651 | 76.1 million | $12.5B |
| Q2 2025 | 659 | 77.5 million | $13.6B |
| Q1 2025 | 657 | 75.3 million | $13.6B |
| Q4 2024 | 656 | 75.1 million | $15.7B |
| Q3 2024 | 637 | 74.7 million | $16.0B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Ashleman Eric D | May 11, 2026 | Chief Executive Officer | Conversion of Exercise of derivative security at price 93.27 per share. | $1.4M |
| Ashleman Eric D | May 11, 2026 | Chief Executive Officer | Sale at price 214.95 - 215.81 per share. | $3.3M |
| Buthman Mark A | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Quiroz Alejandro | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Christenson Carl R | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Beck Mark A. | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Gunter Lakecia N | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Watts Stanfield Paris | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Disher Stephanie | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Glastra Matthijs | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Helmkamp Katrina L. | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Ashleman Eric D | Feb 20, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 44 insider transactions in the last two years.
Vanguard Capital Management LLC, with 6.57% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (5.93%) and Vanguard Portfolio Management LLC (5.07%).
711 institutional holdings reports listed Idex shares in Q2 2026 worth $17.10 billion.
In the last two years insiders reported 2 sales and 2 purchases (44 transactions in all); the newest on file is from May 11, 2026.