Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in TRI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Woodbridge CO LTD | 300.8M | $27.07B | +0.0% | 68.904% | 97.32% |
| 2 | ROYAL BANK OF CANADA | 9.2M | $831.0M | -5.9% | 2.116% | 0.15% |
| 3 | 1832 Asset Management L.P. | 7.2M | $651.0M | +37.7% | 1.657% | 0.86% |
| 4 | BANK OF MONTREAL /CAN/ | 5.3M | $480.7M | -14.4% | 1.220% | 0.18% |
| 5 | TD ASSET MANAGEMENT INC | 5.2M | $467.8M | +11.5% | 1.191% | 0.38% |
| 6 | TLT Family Holdco ULC | 4.3M | $387.2M | 0.0% | 0.986% | 53.47% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 3.7M | $336.6M | — | 0.854% | 0.01% |
| 8 | MORGAN STANLEY | 3.3M | $293.6M | +16.4% | 0.747% | 0.02% |
| 9 | LCC Family Corp. | 3.2M | $291.7M | -10.9% | 0.743% | 100.00% |
| 10 | GOLDMAN SACHS GROUP INC | 3.2M | $284.5M | +36.3% | 0.724% | 0.03% |
| 11 | FMR LLC | 2.9M | $261.5M | -38.4% | 0.664% | 0.01% |
| 12 | Invesco Ltd. | 2.5M | $226.8M | +1.8% | 0.578% | 0.03% |
| 13 | SEG Family Corp. | 2.5M | $225.3M | -13.7% | 0.574% | 100.00% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 2.2M | $203.0M | +0.2% | 0.511% | 0.01% |
| 15 | Fiera Capital Corp | 2.1M | $191.9M | +18.7% | 0.489% | 0.66% |
| 16 | NATIONAL BANK OF CANADA /FI/ | 1.9M | $166.1M | +12.0% | 0.426% | 0.17% |
| 17 | CANADA PENSION PLAN INVESTMENT BOARD | 1.8M | $159.6M | +87.1% | 0.405% | 0.10% |
| 18 | MACKENZIE FINANCIAL CORP | 1.7M | $157.1M | -26.8% | 0.399% | 0.19% |
| 19 | BANK OF AMERICA CORP /DE/ | 1.6M | $146.4M | +48.7% | 0.373% | 0.01% |
| 20 | FIRST TRUST ADVISORS LP | 1.6M | $143.0M | +33.3% | 0.364% | 0.10% |
| 21 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.5M | $135.3M | +65.1% | 0.344% | 0.12% |
| 22 | AGF MANAGEMENT LTD | 1.4M | $129.9M | +29.0% | 0.329% | 0.58% |
| 23 | TD Waterhouse Canada Inc. | 1.3M | $117.9M | +484.7% | 0.308% | 0.35% |
| 24 | BlackRock, Inc. | 1.2M | $107.5M | -11.6% | 0.274% | 0.00% |
| 25 | VANGUARD FIDUCIARY TRUST CO | 1.2M | $107.5M | — | 0.273% | 0.03% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in TRI — a direct measure of their conviction.
Filings activity in TRI during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 455 | 6.6% | 101.38% | 46.52 pp | $36.03B | 31% |
| Q4 2025 | 487 | 4.3% | 147.90% | 25.69 pp | $52.56B | 15% |
| Q3 2025 | 509 | 1.5% | 173.59% | 26.40 pp | $61.69B | 23% |
| Q2 2025 | 517 | +7.5% | 199.99% | +159.21 pp | $80.56B | +456% |
| Q1 2025 | 481 | +2.3% | 40.78% | +4.08 pp | $14.49B | +11% |
| Q4 2024 | 470 | +0.9% | 36.70% | 2.11 pp | $13.04B | 5.5% |
| Q3 2024 | 466 | 3.5% | 38.81% | 0.09 pp | $13.79B | 0.2% |
| Q2 2024 | 483 | — | 38.90% | — | $13.83B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying TRI stock.
Based on Q1 2026 13F filings, institutional ownership of Thomson Reuters Corporation stands at 101.4%, held across 455 reporting institutions.
Woodbridge CO LTD is the largest reported institutional holder of TRI, with approximately 300,790,959 shares worth $27.07B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of TRI.
Our composite Smart Money Score for TRI is 17 out of 100 (Heavy Distribution). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
86 institutions opened new positions in TRI during Q1 2026, while 118 fully exited. 66 added to existing positions and 301 trimmed.
TRI institutional ownership fell by 46.52 percentage points quarter-over-quarter, with a net change of -32 holders.
The top 10 institutions account for 86.3% of all reported 13F value in TRI, and the top 25 account for 93.2%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Thomson Reuters Corporation (TRI) Institutional Ownership