Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
469 institutional managers reported holding GH for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 46%. 63 opened new positions; 82 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 12.55M | 9.56% | $1.16B | added +3.1% | 2018 Q4 |
| BlackRock | 11.55M | 8.80% | $1.07B | added +2.1% | 2018 Q4 |
| T. Rowe Price | 7.02M | 5.35% | $649.0M | added +24.6% | 2018 Q4 |
| Invesco | 4.95M | 3.77% | $457.1M | trimmed -7% | 2019 Q1 |
| Goldman Sachs | 4.44M | 3.38% | $409.9M | added +68.8% | 2018 Q4 |
| Two Sigma | 4.23M | 3.22% | $390.8M | added +94.7% | 2022 Q2 |
| FMR (Fidelity) | 4.12M | 3.14% | $380.3M | added +71.8% | 2018 Q4 |
| Baillie Gifford | 3.86M | 2.94% | $356.6M | trimmed -21.1% | 2023 Q4 |
| Geode Capital | 3.51M | 2.67% | $324.2M | added +9.2% | 2018 Q4 |
| Capital International Investors | 3.48M | 2.65% | $321.7M | trimmed -1.3% | 2020 Q4 |
| Franklin Resources | 3.45M | 2.63% | $318.6M | added +2.6% | 2018 Q4 |
| Deep Track Capital, LP | 3.34M | 2.54% | $308.5M | added +19.2% | 2023 Q2 |
| UBS | 3.03M | 2.31% | $279.9M | trimmed -16.4% | 2018 Q4 |
| State Street | 2.88M | 2.20% | $266.6M | added +3.2% | 2018 Q4 |
| Fuller & Thaler Asset Management, INC. | 2.55M | 1.94% | $235.7M | added +4.4% | 2024 Q2 |
| Eventide Asset Management, LLC | 2.36M | 1.80% | $218.3M | trimmed -5.9% | 2021 Q3 |
| Pier 88 Investment Partners LLC | 2.06M | 1.57% | $190.1M | added +30064.2% | 2025 Q2 |
| AllianceBernstein | 1.91M | 1.45% | $176.1M | unchanged | 2018 Q4 |
| Lord, Abbett & CO. LLC | 1.90M | 1.45% | $175.5M | trimmed -4.5% | 2024 Q3 |
| Federated Hermes, INC. | 1.89M | 1.44% | $174.4M | trimmed -7.1% | 2020 Q2 |
| Driehaus Capital Management LLC | 1.52M | 1.16% | $140.9M | trimmed -28.9% | 2025 Q1 |
| Alyeska Investment Group | 1.49M | 1.14% | $137.6M | added +10.9% | 2025 Q3 |
| Morgan Stanley | 1.49M | 1.13% | $137.4M | added +28.9% | 2018 Q4 |
| RTW Investments, LP | 1.48M | 1.13% | $136.9M | unchanged | 2025 Q2 |
| Charles Schwab Investment Management | 1.45M | 1.11% | $134.2M | unchanged | 2018 Q4 |
| Ameriprise Financial INC | 1.41M | 1.08% | $130.7M | added +85.5% | 2023 Q2 |
| BNY Mellon | 1.39M | 1.06% | $128.6M | added +1.8% | 2018 Q4 |
| Westfield Capital Management CO LP | 1.36M | 1.04% | $125.9M | added +152.7% | 2025 Q4 |
| Hood River Capital Management LLC | 1.31M | 1.00% | $121.1M | added +33.9% | 2024 Q2 |
| Manufacturers Life Insurance Company, THE | 1.21M | 0.92% | $111.4M | added +89.6% | 2019 Q4 |
| Northern Trust | 1.11M | 0.85% | $102.8M | added +0.9% | 2018 Q4 |
| Temasek Holdings | 985.6k | 0.75% | $91.1M | trimmed -5.6% | 2018 Q4 |
| Wellington Management | 972.6k | 0.74% | $89.9M | added +139.2% | 2023 Q2 |
| William Blair Investment Management, LLC | 951.1k | 0.72% | $87.9M | opened | 2026 Q1 |
| Millennium Management | 921.4k | 0.70% | $85.1M | added +57.8% | 2022 Q4 |
| Bank OF America CORP /DE/ | 895.2k | 0.68% | $82.7M | trimmed -12% | 2018 Q4 |
| American Century Companies INC | 867.5k | 0.66% | $80.2M | added +989.8% | 2020 Q4 |
| Summit Partners Public Asset Management, LLC | 862.9k | 0.66% | $79.7M | added +1.3% | 2025 Q3 |
| Emerald Advisers, LLC | 841.9k | 0.64% | $77.8M | trimmed -2.3% | 2025 Q1 |
| Adage Capital Partners GP, L.l.c. | 816.1k | 0.62% | $75.4M | added +75.5% | 2024 Q1 |
| Erste Asset Management GmbH | 815.9k | 0.62% | $75.4M | trimmed -22% | 2019 Q4 |
| Artisan Partners | 814.6k | 0.62% | $75.3M | added +180.5% | 2025 Q4 |
| Cadian Capital Management, LP (focused) | 779.6k | 0.59% | $72.0M | trimmed -15.5% | 2023 Q4 |
| Citadel Advisors | 775.9k | 0.59% | $71.7M | added +37.5% | 2019 Q1 |
| T. Rowe Price Investment Management, INC. | 755.7k | 0.58% | $69.8M | opened | 2026 Q1 |
| Point72 | 695.9k | 0.53% | $64.3M | trimmed -53.6% | 2022 Q3 |
| Fred Alger Management, LLC | 622.3k | 0.47% | $57.5M | added +5.5% | 2018 Q4 |
| Allspring Global Investments Holdings, LLC | 608.8k | 0.46% | $56.3M | trimmed -1.6% | 2025 Q3 |
| BNP Paribas Financial Markets | 574.7k | 0.44% | $53.1M | trimmed -8.2% | 2019 Q2 |
| Emerald Mutual Fund Advisers Trust | 519.5k | 0.40% | $48.0M | trimmed -0.8% | 2025 Q1 |
Largest 50 of 469 shown; the full ranked, searchable register is at boothcheck.com/holders/GH. 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.