The largest holder of TransUnion stock is Dodge & Cox, with 24.2 million shares (12.63% of the company), worth about $2.06 billion as of September 25, 2026. The 10 largest holders together own 59.9%.
In Q2 2026, 537 institutional holdings reports listed shares worth $16.50 billion.
Insiders reported 100 transactions in the last two years: 33 sales worth $5.64 million and no purchases. The newest one on file is from May 12, 2026 (Gottdiener Charles E., Director).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 12, 2026.

2026Q2
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Dodge & Cox | 24.2 million | 12.63% | $2.1B |
| BlackRock Advisors LLC | 16.8 million | 8.74% | $1.4B |
| Independent Franchise Partners LLP | 14.0 million | 7.29% | $1.2B |
| Fidelity Management & Research Co. LLC | 11.7 million | 6.11% | $995.0M |
| MFS Investment Management Canada Ltd. | 10.7 million | 5.57% | $906.0M |
| Vanguard Capital Management LLC | 8.7 million | 4.55% | $740.0M |
| Vanguard Portfolio Management LLC | 8.2 million | 4.28% | $697.0M |
| State Street Corporation | 7.1 million | 3.71% | $604.0M |
| T. Rowe Price Investment Management, Inc. | 6.8 million | 3.57% | $580.0M |
| Wellington Trust Co., NA | 6.6 million | 3.45% | $561.0M |
As of September 25, 2026.
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 537 | – | $16.5B |
| Q1 2026 | 578 | – | $15.5B |
| Q4 2025 | 612 | – | $18.0B |
| Q3 2025 | 592 | – | $18.1B |
| Q2 2025 | 571 | 199.0 million | $17.5B |
| Q1 2025 | 569 | 194.0 million | $16.3B |
| Q4 2024 | 584 | 192.0 million | $17.8B |
| Q3 2024 | 542 | 196.0 million | $20.4B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Gottdiener Charles E. | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Zukauckas Linda K. | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Awad George M | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Singisetti Ravi Kumar | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Russell Heather J | May 12, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Chaouki Steven M | May 12, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Fradin Russell P. | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Joseph Pamela A. | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Monahan Thomas L Iii | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
| Cartwright Christopher A | May 12, 2026 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Achanta Venkat | May 12, 2026 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Clark Suzanne Patricia | May 12, 2026 | Director | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 100 insider transactions in the last two years.
Dodge & Cox, with 12.63% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (8.74%) and Independent Franchise Partners LLP (7.29%).
537 institutional holdings reports listed TransUnion shares in Q2 2026 worth $16.50 billion.
In the last two years insiders reported 33 sales and no purchases (100 transactions in all); the newest on file is from May 12, 2026.