Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in THG held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3.7M | $638.1M | +2.8% | 10.461% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.9M | $335.0M | β | 5.492% | 0.02% |
| 3 | STATE STREET CORP | 1.6M | $282.8M | +36.0% | 4.636% | 0.01% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.5M | $251.8M | β | 4.127% | 0.01% |
| 5 | AQR CAPITAL MANAGEMENT LLC | 1.0M | $175.4M | +6.3% | 2.880% | 0.08% |
| 6 | AMERICAN CENTURY COMPANIES INC | 1.0M | $173.8M | +41.3% | 2.849% | 0.09% |
| 7 | FULLER & THALER ASSET MANAGEMENT, INC. | 990K | $171.6M | +3.7% | 2.813% | 0.58% |
| 8 | DIMENSIONAL FUND ADVISORS LP | 970K | $168.2M | +16.4% | 2.757% | 0.03% |
| 9 | ALLIANCEBERNSTEIN L.P. | 832K | $152.0M | -22.8% | 2.363% | 0.05% |
| 10 | FIRST TRUST ADVISORS LP | 827K | $143.4M | +3.2% | 2.351% | 0.10% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 728K | $126.3M | +0.0% | 2.069% | 0.01% |
| 12 | AMERIPRISE FINANCIAL INC | 695K | $120.4M | +9.2% | 1.974% | 0.03% |
| 13 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 599K | $103.8M | -50.8% | 1.702% | 0.03% |
| 14 | Qube Research & Technologies Ltd | 493K | $85.4M | +16.1% | 1.400% | 0.10% |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 471K | $81.6M | +2.7% | 1.338% | 0.01% |
| 16 | MORGAN STANLEY | 463K | $80.2M | +14.9% | 1.315% | 0.00% |
| 17 | Invesco Ltd. | 453K | $78.5M | -30.0% | 1.287% | 0.01% |
| 18 | Woodline Partners LP | 419K | $72.6M | +70.6% | 1.191% | 0.27% |
| 19 | Allspring Global Investments Holdings, LLC | 402K | $69.2M | -7.0% | 1.141% | 0.12% |
| 20 | LONDON CO OF VIRGINIA | 382K | $66.2M | -2.5% | 1.085% | 0.41% |
| 21 | NORTHERN TRUST CORP | 342K | $59.3M | +2.2% | 0.972% | 0.01% |
| 22 | Bank of New York Mellon Corp | 339K | $58.7M | +1.6% | 0.963% | 0.01% |
| 23 | MARKEL CORP | 281K | $48.7M | 0.0% | 0.799% | 0.41% |
| 24 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 277K | $48.0M | -23.3% | 0.787% | 0.08% |
| 25 | BANK OF AMERICA CORP /DE/ | 251K | $43.5M | +10.1% | 0.714% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in THG β a direct measure of their conviction.
Filings activity in THG during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new THG position in Q1 2026
Institutions that fully closed their THG position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 497 | +1.6% | 72.85% | 4.72 pp | $5.07B | 6.1% |
| Q4 2025 | 489 | +7.9% | 77.57% | +1.52 pp | $5.39B | +2.0% |
| Q3 2025 | 453 | +5.3% | 76.05% | +3.40 pp | $5.29B | +4.7% |
| Q2 2025 | 430 | 1.4% | 72.65% | +0.66 pp | $5.05B | +0.9% |
| Q1 2025 | 436 | +8.7% | 71.99% | +8.38 pp | $5.01B | +13% |
| Q4 2024 | 401 | +8.4% | 63.61% | +4.56 pp | $4.42B | +7.7% |
| Q3 2024 | 370 | +0.8% | 59.05% | 12.90 pp | $4.11B | 18% |
| Q2 2024 | 367 | β | 71.95% | β | $5.00B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying THG stock.
Based on Q1 2026 13F filings, institutional ownership of The Hanover Insurance Group, Inc. stands at 72.9%, held across 497 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of THG, with approximately 3,681,166 shares worth $0.64B 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 THG.
Our composite Smart Money Score for THG is 28 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
67 institutions opened new positions in THG during Q1 2026, while 59 fully exited. 133 added to existing positions and 293 trimmed.
THG institutional ownership fell by 4.72 percentage points quarter-over-quarter, with a net change of +8 holders.
The top 10 institutions account for 49.2% of all reported 13F value in THG, and the top 25 account for 71.7%.
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.
The Hanover Insurance Group, Inc. (THG) Institutional Ownership