As of November 7, 2026, 6 holders' latest Schedule 13D or 13G filings report owning 5% or more of TransUnion. The largest reported stake is Dodge & Cox's, at 12.1%. 13 filings are on record since October 17, 2025 (Schedule 13G/A, June 5, 2026).
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Key facts
- · Reporting person: Wellington Management Group LLP · Sole voting: 0 · Shared voting: 5,688,643 · Sole dispositive: 0 · Shared dispositive: 6,603,407 · SCHEDULE 13G/A, 2026-08-13
- · Reporting person: Massachusetts Financial Services Company · Sole voting: 10,509,251 · Shared voting: 0 · Sole dispositive: 10,667,983 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-12
- · Reporting person: Fmr LLC · Sole voting: 10,354,666 · Shared voting: 0 · Sole dispositive: 11,634,422 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-06
- · Reporting person: Dodge & Cox · Sole voting: 22,036,310 · Shared voting: 0 · Sole dispositive: 23,353,165 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-06-05
- · Holder: Massachusetts Financial Services Company · Percent: 6.8% · SCHEDULE 13G/A
TransUnion has 13 Schedule 13D or 13G filings on record since 2025-10-17. 6 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Dodge & Cox | 12.1% | 23,353,165 | SCHEDULE 13G/A, 2026-06-05 | 2026-05-31 |
| BlackRock, Inc. | 9.6% | 18,630,274 | SCHEDULE 13G/A, 2025-10-17 | 2025-09-30 |
| Independent Franchise Partners, LLP | 6.29% | 12,131,944 | SCHEDULE 13G, 2026-05-14 | 2026-03-31 |
| Fmr LLC | 6% | 11,634,422 | SCHEDULE 13G, 2026-08-06 | 2026-06-30 |
| Massachusetts Financial Services Company | 5.6% | 10,667,983 | SCHEDULE 13G/A, 2026-08-12 | 2026-06-30 |
| Vanguard Capital Management | 5.35% | 10,332,724 | SCHEDULE 13G, 2026-04-30 | 2026-03-31 |
| Wellington Management Group LLP | 3.4% | 6,603,464 | SCHEDULE 13G/A, 2026-08-13 | 2026-06-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on TransUnion and the records around it.
TransUnion elsewhere on the record
- Leadership changes Sep 2026
- Who owns it
Companies that share a holder
- Independent Franchise Partners, LLP also filed stake reports on 5 other companies: Gartner Inc. (Aug 2026), NEWS CORP (Aug 2026), ZILLOW GROUP, INC. (Aug 2026)
- Massachusetts Financial Services Company also filed stake reports on 26 other companies: ASHLAND INC. (Aug 2026), BLACKSTONE DIGITAL INFRASTRUCTURE TRUST INC (Aug 2026), PG&E CORP (Aug 2026)
- Dodge & Cox also filed stake reports on 36 other companies: Charter Communications, Inc. (Aug 2026), SUN COMMUNITIES, INC (Aug 2026), Aegon Ltd (May 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Dodge & Cox | 22,036,310 | 0 | 23,353,165 | 0 | SCHEDULE 13G/A, 2026-06-05 |
| Fmr LLC | 10,354,666 | 0 | 11,634,422 | 0 | SCHEDULE 13G, 2026-08-06 |
| Abigail P. Johnson | 0 | 0 | 11,634,422 | 0 | SCHEDULE 13G, 2026-08-06 |
| Massachusetts Financial Services Company | 10,509,251 | 0 | 10,667,983 | 0 | SCHEDULE 13G/A, 2026-08-12 |
| Wellington Management Group LLP | 0 | 5,688,643 | 0 | 6,603,407 | SCHEDULE 13G/A, 2026-08-13 |
| Wellington Group Holdings LLP | 0 | 5,688,643 | 0 | 6,603,407 | SCHEDULE 13G/A, 2026-08-13 |
| Wellington Investment Advisors Holdings LLP | 0 | 5,688,643 | 0 | 6,603,407 | SCHEDULE 13G/A, 2026-08-13 |
The latest filing identifies TransUnion by CUSIP 89400J107 and gives its principal executive office as 555 West Adams Street, Chicago (SCHEDULE 13G/A, 2026-08-13).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-10-17 | BlackRock, Inc. | 9.6% | SCHEDULE 13G/A |
| 2025-11-04 | Massachusetts Financial Services Company | 9.4% | SCHEDULE 13G/A |
| 2026-01-28 | Massachusetts Financial Services Company | 8% | SCHEDULE 13G/A |
| 2026-02-13 | Dodge & Cox | 5.1% | SCHEDULE 13G |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-30 | Vanguard Capital Management | 5.35% | SCHEDULE 13G |
| 2026-05-14 | Massachusetts Financial Services Company | 6.8% | SCHEDULE 13G/A |
| 2026-05-14 | Independent Franchise Partners, LLP | 6.29% | SCHEDULE 13G |
| 2026-05-14 | Dodge & Cox | 8.4% | SCHEDULE 13G/A |
| 2026-06-05 | Dodge & Cox | 12.1% | SCHEDULE 13G/A |
| 2026-08-06 | Fmr LLC | 6% | SCHEDULE 13G |
| 2026-08-12 | Massachusetts Financial Services Company | 5.6% | SCHEDULE 13G/A |
| 2026-08-13 | Wellington Management Group LLP | 3.4% | SCHEDULE 13G/A |
Questions about who owns TransUnion
Who owns TransUnion?
On this page, 6 holders' latest ownership filings report 5% or more of TransUnion: Dodge & Cox (12.1%, Schedule 13G/A, filed 2026-06-05), BlackRock, Inc. (9.6%, Schedule 13G/A, filed 2025-10-17), Independent Franchise Partners, LLP (6.29%, Schedule 13G, filed 2026-05-14), Fmr LLC (6%, Schedule 13G, filed 2026-08-06) and Massachusetts Financial Services Company (5.6%, Schedule 13G/A, filed 2026-08-12); 1 more is listed above.
Who are the largest shareholders of TransUnion?
By the share each holder's latest filing reports, the largest holders of TransUnion on this page are Dodge & Cox (12.1%), BlackRock, Inc. (9.6%) and Independent Franchise Partners, LLP (6.29%).
When did Dodge & Cox buy into TransUnion?
The filings give report dates, not purchase dates. The earliest filing from Dodge & Cox on this page is the Schedule 13G, filed 2026-02-13, reporting 5.1%; its latest, Schedule 13G/A filed 2026-06-05, reports 12.1%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 13 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for TransUnion
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| November 5, 2026 | Leadership change: David Gilbert appointed, Chief Financial Officer | — | Leadership changes | Source |
| September 23, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.