Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
487 institutional managers reported holding THG for the quarter ended Mar 31, 2026. Together they hold about 87% of shares outstanding; the top 10 hold 45%. 57 opened new positions; 55 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 3.68M | 10.25% | $637.5M | added +2.8% | ≤2013 |
| Vanguard Group | 3.67M | 10.21% | $635.0M | unchanged | ≤2013 |
| State Street | 1.63M | 4.54% | $282.5M | added +36% | ≤2013 |
| T. Rowe Price | 1.38M | 3.86% | $239.7M | trimmed -5% | ≤2013 |
| AQR Capital | 1.01M | 2.82% | $175.5M | added +6.3% | ≤2013 |
| American Century Companies INC | 1.00M | 2.79% | $173.6M | added +41.3% | ≤2013 |
| Fuller & Thaler Asset Management, INC. | 989.8k | 2.76% | $171.4M | added +3.7% | 2020 Q3 |
| Dimensional Fund Advisors | 970.2k | 2.70% | $168.0M | added +16.4% | ≤2013 |
| AllianceBernstein | 831.5k | 2.32% | $144.0M | trimmed -22.8% | ≤2013 |
| First Trust Advisors LP | 827.3k | 2.31% | $143.3M | added +3.2% | ≤2013 |
| Geode Capital | 728.2k | 2.03% | $126.1M | unchanged | ≤2013 |
| Ameriprise Financial INC | 694.8k | 1.94% | $120.3M | added +9.2% | ≤2013 |
| MFS Investment Management | 598.8k | 1.67% | $103.7M | trimmed -50.8% | ≤2013 |
| Qube Research & Technologies LTD | 492.8k | 1.37% | $85.3M | added +16.1% | 2021 Q3 |
| Charles Schwab Investment Management | 470.8k | 1.31% | $81.5M | added +2.7% | ≤2013 |
| Morgan Stanley | 462.7k | 1.29% | $80.1M | added +14.9% | ≤2013 |
| Invesco | 452.9k | 1.26% | $78.4M | trimmed -30% | ≤2013 |
| Woodline Partners LP | 419.0k | 1.17% | $72.6M | added +70.6% | 2024 Q3 |
| Allspring Global Investments Holdings, LLC | 401.5k | 1.12% | $69.5M | trimmed -7% | 2021 Q4 |
| London CO OF Virginia | 381.7k | 1.06% | $66.1M | trimmed -2.5% | 2021 Q1 |
| UBS | 346.7k | 0.97% | $60.1M | added +36.4% | ≤2013 |
| Northern Trust | 342.2k | 0.95% | $59.3M | added +2.2% | ≤2013 |
| BNY Mellon | 338.9k | 0.94% | $58.7M | added +1.6% | ≤2013 |
| Markel Group | 281.0k | 0.78% | $48.7M | unchanged | 2022 Q1 |
| Nomura Asset Management International INC. | 277.1k | 0.77% | $48.0M | trimmed -23.3% | 2025 Q4 |
| Bank OF America CORP /DE/ | 251.1k | 0.70% | $43.5M | added +10.1% | ≤2013 |
| Goldman Sachs | 218.8k | 0.61% | $37.9M | added +20.3% | ≤2013 |
| Adage Capital Partners GP, L.l.c. | 215.4k | 0.60% | $37.3M | added +216.7% | 2024 Q3 |
| Quantinno Capital Management LP | 207.2k | 0.58% | $35.9M | added +102% | 2021 Q4 |
| William Blair Investment Management, LLC | 195.8k | 0.55% | $33.9M | added +31.2% | 2025 Q3 |
| Franklin Resources | 182.5k | 0.51% | $31.6M | trimmed -27.5% | ≤2013 |
| PRIMECAP Management | 176.0k | 0.49% | $30.5M | added +377.1% | 2025 Q4 |
| Brown Advisory INC | 172.5k | 0.48% | $29.9M | trimmed -6.1% | 2020 Q4 |
| Vaughan Nelson Investment Management, L.p. | 164.7k | 0.46% | $28.5M | trimmed -62.3% | 2025 Q1 |
| Jacobs Levy Equity Management, INC | 152.8k | 0.43% | $26.5M | trimmed -32.1% | 2019 Q3 |
| Gotham Asset Management | 151.8k | 0.42% | $26.3M | added +13.7% | 2021 Q4 |
| ProShare Advisors LLC | 149.9k | 0.42% | $26.0M | trimmed -20.3% | ≤2013 |
| Arbejdsmarkedets Tillaegspension | 147.1k | 0.41% | $25.5M | added +13.2% | 2025 Q4 |
| Balyasny Asset Management | 143.5k | 0.40% | $24.8M | trimmed -38.4% | 2023 Q4 |
| Boston Trust Walden CORP | 140.9k | 0.39% | $24.4M | trimmed -17.3% | 2023 Q1 |
| Altrinsic Global Advisors LLC (focused) | 130.2k | 0.36% | $22.6M | trimmed -5.1% | 2022 Q3 |
| Public Employees Retirement Association OF Colorado | 128.6k | 0.36% | $22.3M | unchanged | ≤2013 |
| Millennium Management | 118.8k | 0.33% | $20.6M | trimmed -29.7% | ≤2013 |
| Barclays PLC | 118.0k | 0.33% | $20.4M | added +40.5% | ≤2013 |
| Citadel Advisors | 117.6k | 0.33% | $20.4M | added +155.6% | 2025 Q1 |
| Janus Henderson | 116.9k | 0.33% | $20.2M | unchanged | ≤2013 |
| Interval Partners, LP | 109.0k | 0.30% | $18.9M | trimmed -21.2% | 2023 Q3 |
| Envestnet Asset Management INC | 108.5k | 0.30% | $18.8M | unchanged | 2014 Q2 |
| Rhumbline Advisers | 105.2k | 0.29% | $18.2M | added +0.9% | ≤2013 |
| Two Sigma | 102.9k | 0.29% | $17.8M | added +588% | ≤2013 |
Largest 50 of 487 shown; the full ranked, searchable register is at boothcheck.com/holders/THG. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.