Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
205 institutional managers reported holding THR for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 46%. 56 opened new positions; 38 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 3.05M | 9.18% | $153.6M | trimmed -0.7% | ≤2013 |
| FMR (Fidelity) | 2.97M | 8.95% | $149.7M | added +22.9% | 2021 Q3 |
| BlackRock | 2.59M | 7.80% | $130.4M | trimmed -3.5% | ≤2013 |
| Dimensional Fund Advisors | 1.73M | 5.21% | $87.2M | unchanged | ≤2013 |
| Medina Value Partners, LLC (focused) | 966.3k | 2.91% | $48.7M | trimmed -7.4% | 2024 Q4 |
| Gw&k Investment Management, LLC | 952.5k | 2.87% | $48.0M | trimmed -41.5% | 2024 Q4 |
| Geode Capital | 832.5k | 2.51% | $42.0M | added +6.4% | ≤2013 |
| Westwood Holdings Group INC | 782.8k | 2.36% | $39.4M | trimmed -19.9% | 2024 Q1 |
| State Street | 772.5k | 2.33% | $38.9M | added +1.4% | ≤2013 |
| Magnetar Financial LLC | 758.0k | 2.28% | $38.2M | opened | 2026 Q1 |
| Arrowstreet Capital | 679.7k | 2.05% | $34.2M | added +33.7% | 2022 Q3 |
| William Blair Investment Management, LLC | 647.5k | 1.95% | $32.6M | trimmed -27% | 2023 Q2 |
| Harvey Partners, LLC (focused) | 646.7k | 1.95% | $32.6M | trimmed -16.2% | 2020 Q3 |
| Needham Investment Management LLC | 632.5k | 1.91% | $31.9M | added +2% | 2021 Q4 |
| Citigroup INC | 577.9k | 1.74% | $29.1M | added +4861.6% | ≤2013 |
| Ameriprise Financial INC | 569.7k | 1.72% | $28.7M | trimmed -15.4% | 2018 Q3 |
| VAN Lanschot Kempen Investment Management N.v. | 516.5k | 1.56% | $26.0M | trimmed -25.1% | 2017 Q2 |
| Qube Research & Technologies LTD | 509.0k | 1.53% | $25.6M | added +305.2% | 2023 Q1 |
| Goldman Sachs | 486.9k | 1.47% | $24.5M | added +102.1% | ≤2013 |
| Alpine Associates Management INC. | 485.9k | 1.46% | $24.5M | opened | 2026 Q1 |
| Swedbank Robur | 470.0k | 1.42% | $23.7M | trimmed -32.3% | 2023 Q4 |
| NEW South Capital Management INC | 458.4k | 1.38% | $23.1M | trimmed -3.4% | ≤2013 |
| Balyasny Asset Management | 450.5k | 1.36% | $22.7M | added +2990.2% | 2024 Q3 |
| Soros Fund Management | 448.1k | 1.35% | $22.6M | opened | 2026 Q1 |
| AQR Capital | 431.2k | 1.30% | $21.7M | added +1130% | 2020 Q1 |
| Nuveen | 428.2k | 1.29% | $21.6M | added +94.1% | 2019 Q2 |
| UBS | 395.4k | 1.19% | $19.9M | added +9.1% | ≤2013 |
| Kennedy Capital Management LLC | 368.8k | 1.11% | $18.6M | trimmed -3.9% | 2022 Q4 |
| Two Sigma | 356.3k | 1.07% | $18.0M | added +304.7% | 2020 Q2 |
| Assenagon Asset Management S.a. | 345.7k | 1.04% | $17.4M | added +35.2% | 2019 Q2 |
| Deutsche Bank AG\ | 319.7k | 0.96% | $16.1M | added +1.1% | 2013 Q3 |
| Northern Trust | 313.4k | 0.94% | $15.8M | trimmed -20.7% | ≤2013 |
| First Eagle Investment Management | 305.4k | 0.92% | $15.4M | trimmed -23.8% | 2024 Q1 |
| Invesco | 294.8k | 0.89% | $14.9M | added +8% | ≤2013 |
| Charles Schwab Investment Management | 269.3k | 0.81% | $13.6M | trimmed -20.7% | ≤2013 |
| AllianceBernstein | 250.2k | 0.75% | $12.6M | added +637.5% | ≤2013 |
| Janus Henderson | 243.5k | 0.73% | $12.3M | trimmed -2.9% | 2017 Q2 |
| Meros Investment Management, LP | 241.5k | 0.73% | $12.2M | trimmed -28.9% | 2023 Q3 |
| Millennium Management | 212.5k | 0.64% | $10.7M | added +971.7% | 2025 Q1 |
| Jane Street | 205.6k | 0.62% | $10.4M | added +90.5% | 2023 Q3 |
| T. Rowe Price | 195.5k | 0.59% | $9.9M | added +10.8% | ≤2013 |
| Silvercrest Asset Management Group LLC | 187.8k | 0.57% | $9.5M | opened | 2026 Q1 |
| Public Employees Retirement System OF Ohio | 169.4k | 0.51% | $8.5M | trimmed -2.3% | ≤2013 |
| Morgan Stanley | 165.5k | 0.50% | $8.3M | trimmed -85.9% | ≤2013 |
| Russell Investments Group, LTD. | 156.8k | 0.47% | $7.9M | trimmed -3.7% | 2019 Q2 |
| Oberweis Asset Management INC/ | 154.7k | 0.47% | $7.8M | opened | 2026 Q1 |
| Bank OF America CORP /DE/ | 153.5k | 0.46% | $7.7M | trimmed -31.5% | ≤2013 |
| RBF Capital, LLC | 150.0k | 0.45% | $7.6M | trimmed -3.2% | 2025 Q2 |
| Lazard Asset Management LLC | 147.9k | 0.45% | $7.5M | added +16.1% | 2022 Q1 |
| EverSource Wealth Advisors, LLC | 133.7k | 0.40% | $6.7M | added +256976.9% | 2024 Q4 |
Largest 50 of 205 shown; the full ranked, searchable register is at boothcheck.com/holders/THR. 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.