Allison Transmission Holdings, Inc. (ALSN) Shareholders & Insider Trades
Allison Transmission shareholders at a glance
The largest holder of Allison Transmission stock is Fidelity Management & Research Co. LLC, with 12.4 million shares (15.03% of the company), worth about $1.56 billion as of September 25, 2026. The 10 largest holders together own 45.7%.
In Q2 2026, 587 institutional holdings reports listed shares worth $9.74 billion.
Insiders reported 79 transactions in the last two years: 15 sales worth $7.48 million and 2 purchases. The newest one on file is from May 8, 2026 (Mell Scott A., Chief Financial Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 8, 2026.
Allison Transmission Holdings, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Allison Transmission shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Fidelity Management & Research Co. LLC | 12.4 million | 15.03% | $1.6B |
| Vanguard Portfolio Management LLC | 4.0 million | 4.83% | $501.0M |
| BlackRock Advisors LLC | 3.8 million | 4.56% | $473.0M |
| Vanguard Capital Management LLC | 3.7 million | 4.53% | $470.0M |
| Boston Partners Global Investors, Inc. | 3.2 million | 3.85% | $399.0M |
| Fuller & Thaler Asset Management, Inc. | 2.6 million | 3.17% | $330.0M |
| LSV Asset Management | 2.2 million | 2.66% | $276.0M |
| Geode Capital Management LLC | 2.0 million | 2.46% | $255.0M |
| Renaissance Technologies LLC | 1.9 million | 2.35% | $244.0M |
| DFA Australia Ltd. | 1.8 million | 2.22% | $230.0M |
As of September 25, 2026.
Allison Transmission institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 587 | – | $9.7B |
| Q1 2026 | 567 | 84.6 million | $9.9B |
| Q4 2025 | 541 | – | $8.5B |
| Q3 2025 | 532 | 84.4 million | $7.2B |
| Q2 2025 | 558 | 84.8 million | $8.1B |
| Q1 2025 | 531 | 83.4 million | $8.0B |
| Q4 2024 | 564 | 84.1 million | $9.1B |
| Q3 2024 | 504 | 84.6 million | $8.1B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Allison Transmission insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Mell Scott A. | May 8, 2026 | Chief Financial Officer | Conversion of Exercise of derivative security at price 89.41 per share. | $119,541 |
| Mell Scott A. | May 8, 2026 | Chief Financial Officer | Sale at price 125.00 per share. | $283,750 |
| Shivram Krishna | May 6, 2026 | Director | -- | – |
| Barbour D Scott | May 6, 2026 | Director | -- | – |
| Christman Philip J | May 6, 2026 | Director | -- | – |
| Ostojic Sasha | May 6, 2026 | Director | -- | – |
| Perna Gustave F. | May 6, 2026 | Director | -- | – |
| Barbour D Scott | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Christman Philip J | May 6, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Mell Scott A. | Apr 14, 2026 | Chief Financial Officer | -- | – |
| Scroggins Eric C | Mar 9, 2026 | Officer | Sale at price 114.40 per share. | $150,207 |
| Graziosi David S | Feb 27, 2026 | Chief Executive Officer | -- | – |
Newest 12 of 79 insider transactions in the last two years.
Questions and answers
Who owns the most Allison Transmission stock?
Fidelity Management & Research Co. LLC, with 15.03% of the company (as of September 25, 2026). Next: Vanguard Portfolio Management LLC (4.83%) and BlackRock Advisors LLC (4.56%).
How many institutions own Allison Transmission stock?
587 institutional holdings reports listed Allison Transmission shares in Q2 2026 worth $9.74 billion.
Are Allison Transmission insiders buying or selling the stock?
In the last two years insiders reported 15 sales and 2 purchases (79 transactions in all); the newest on file is from May 8, 2026.
