The largest holder of Emcor stock is BlackRock Advisors LLC, with 3.4 million shares (7.72% of the company), worth about $2.50 billion as of September 25, 2026. The 10 largest holders together own 35.9%.
In Q2 2026, 1,286 institutional holdings reports listed shares worth $34.40 billion.
Insiders reported 75 transactions in the last two years: 15 sales worth $45.32 million and no purchases. The newest one on file is from May 11, 2026 (Reid William P, Director).
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 |
|---|---|---|---|
| BlackRock Advisors LLC | 3.4 million | 7.72% | $2.5B |
| Vanguard Capital Management LLC | 2.9 million | 6.58% | $2.1B |
| Vanguard Portfolio Management LLC | 2.0 million | 4.51% | $1.5B |
| State Street Corporation | 2.0 million | 4.49% | $1.5B |
| Fidelity Management & Research Co. LLC | 1.3 million | 3.02% | $980.0M |
| Geode Capital Management LLC | 1.3 million | 2.90% | $941.0M |
| AQR Capital Management LLC | 930,817 | 2.11% | $684.0M |
| First Trust Advisors LP | 772,897 | 1.75% | $568.0M |
| BlackRock Life Ltd. | 628,285 | 1.42% | $462.0M |
| Kayne Anderson Rudnick Investment Management LLC | 613,035 | 1.39% | $450.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 1,286 | – | $34.4B |
| Q1 2026 | 1,194 | 41.4 million | $30.6B |
| Q4 2025 | 1,137 | 43.3 million | $26.5B |
| Q3 2025 | 1,104 | 41.8 million | $27.1B |
| Q2 2025 | 982 | 42.8 million | $22.9B |
| Q1 2025 | 913 | 42.8 million | $15.7B |
| Q4 2024 | 923 | 42.3 million | $19.2B |
| Q3 2024 | 820 | 43.1 million | $18.5B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Reid William P | May 11, 2026 | Director | Sale at price 925.78 per share. | $1.9M |
| Altmeyer John W | May 1, 2026 | Director | Sale at price 895.00 per share. | $2.2M |
| Altmeyer John W | Apr 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Reid William P | Apr 30, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Guzzi Anthony J | Apr 30, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Mauricio Maxine Lum | Apr 30, 2026 | General Counsel | Stock Award(Grant) at price 0.00 per share. | – |
| Nalbandian Jason R. | Apr 30, 2026 | Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Guzzi Anthony J | Apr 30, 2026 | Chief Executive Officer | Stock Gift at price 0.00 per share. | – |
| Schwarzwaelder Steven | Apr 30, 2026 | Director | Sale at price 895.19 per share. | $5.0M |
| Nalbandian Jason R. | Apr 30, 2026 | Chief Financial Officer | Sale at price 856.43 per share. | $685,144 |
| Lind Robert Peter | Apr 30, 2026 | Officer | Sale at price 894.27 per share. | $603,632 |
| Mauricio Maxine Lum | Mar 17, 2026 | General Counsel | Stock Gift at price 0.00 per share. | – |
Newest 12 of 75 insider transactions in the last two years.
BlackRock Advisors LLC, with 7.72% of the company (as of September 25, 2026). Next: Vanguard Capital Management LLC (6.58%) and Vanguard Portfolio Management LLC (4.51%).
1,286 institutional holdings reports listed Emcor shares in Q2 2026 worth $34.40 billion.
In the last two years insiders reported 15 sales and no purchases (75 transactions in all); the newest on file is from May 11, 2026.