Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
315 institutional managers reported holding GHC for the quarter ended Mar 31, 2026. Together they hold about 61% of shares outstanding; the top 10 hold 42%. 29 opened new positions; 54 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 415.6k | 9.49% | $439.4M | added +0.6% | 2013 Q4 |
| Vanguard Group | 347.1k | 7.93% | $366.9M | added +1.6% | 2013 Q4 |
| Madison Avenue Partners, LP (focused) | 245.8k | 5.62% | $259.9M | unchanged | 2020 Q1 |
| Dimensional Fund Advisors | 235.0k | 5.37% | $248.5M | trimmed -1.1% | 2013 Q4 |
| Wallace Capital Management INC. | 155.1k | 3.54% | $163.9M | trimmed -1.3% | 2013 Q4 |
| State Street | 124.6k | 2.85% | $131.7M | trimmed -1.9% | 2013 Q4 |
| First Trust Advisors LP | 92.5k | 2.11% | $97.8M | added +8.9% | 2016 Q4 |
| AQR Capital | 92.2k | 2.11% | $97.5M | added +7.2% | 2013 Q4 |
| Geode Capital | 87.8k | 2.00% | $92.8M | added +0.7% | 2013 Q4 |
| Charles Schwab Investment Management | 44.1k | 1.01% | $46.7M | trimmed -3.5% | 2013 Q4 |
| Northern Trust | 40.8k | 0.93% | $43.2M | added +3.3% | 2013 Q4 |
| Southeastern Asset Management INC/TN/ (focused) | 37.8k | 0.86% | $39.9M | added +5.7% | 2013 Q4 |
| Morgan Stanley | 36.5k | 0.83% | $38.6M | added +22.5% | 2013 Q4 |
| Goldman Sachs | 31.2k | 0.71% | $33.0M | trimmed -13% | 2013 Q4 |
| BNY Mellon | 29.5k | 0.67% | $31.2M | trimmed -32.2% | 2013 Q4 |
| Raymond James Financial INC | 29.3k | 0.67% | $30.9M | unchanged | 2016 Q1 |
| Victory Capital Management INC | 28.0k | 0.64% | $29.7M | added +342.1% | 2019 Q3 |
| Invesco | 25.4k | 0.58% | $26.9M | added +3.8% | 2013 Q4 |
| London CO OF Virginia | 24.1k | 0.55% | $25.5M | trimmed -3.5% | 2019 Q4 |
| Franklin Resources | 22.4k | 0.51% | $23.7M | added +66.9% | 2022 Q2 |
| State of Alaska, Department of Revenue | 16.3k | 0.37% | $17.2M | unchanged | 2017 Q4 |
| Allspring Global Investments Holdings, LLC | 15.8k | 0.36% | $16.7M | added +43.2% | 2025 Q4 |
| Gamco Investors, INC. et al | 13.5k | 0.31% | $14.2M | trimmed -0.6% | 2014 Q1 |
| Bank OF America CORP /DE/ | 13.3k | 0.30% | $14.1M | added +11% | 2013 Q4 |
| Bronte Capital Management Pty LTD. | 12.8k | 0.29% | $13.5M | trimmed -4.3% | 2020 Q4 |
| Seizert Capital Partners, LLC | 12.8k | 0.29% | $13.5M | added +6.8% | 2018 Q1 |
| Qube Research & Technologies LTD | 12.2k | 0.28% | $12.9M | added +7.5% | 2022 Q2 |
| Thompson Siegel & Walmsley LLC | 12.1k | 0.28% | $12.8M | trimmed -16.1% | 2020 Q2 |
| Pathstone Holdings, LLC | 11.3k | 0.26% | $12.0M | unchanged | 2016 Q2 |
| UBS | 10.9k | 0.25% | $11.5M | trimmed -42.4% | 2013 Q4 |
| Rhumbline Advisers | 10.2k | 0.23% | $10.8M | added +1.1% | 2013 Q4 |
| Edgestream Partners, L.p. | 10.2k | 0.23% | $10.7M | added +9.5% | 2025 Q2 |
| Renaissance Technologies | 9.4k | 0.21% | $9.9M | added +551.4% | 2025 Q3 |
| AllianceBernstein | 9.3k | 0.21% | $9.9M | unchanged | 2013 Q4 |
| LEE Danner & Bass INC | 9.2k | 0.21% | $9.7M | added +103.3% | 2013 Q4 |
| Principal Financial Group INC | 9.1k | 0.21% | $9.6M | trimmed -18.6% | 2013 Q4 |
| GAMCO (Gabelli) | 9.0k | 0.21% | $9.5M | unchanged | 2013 Q4 |
| Millennium Management | 9.0k | 0.21% | $9.5M | trimmed -37.9% | 2019 Q3 |
| Hennessy Advisors INC | 9.0k | 0.20% | $9.5M | trimmed -4.3% | 2025 Q2 |
| Citadel Advisors | 9.0k | 0.20% | $9.5M | added +167.3% | 2025 Q4 |
| LPL Financial LLC | 9.0k | 0.20% | $9.5M | added +1.5% | 2024 Q4 |
| Deutsche Bank AG\ | 8.8k | 0.20% | $9.3M | added +222.2% | 2013 Q4 |
| Ameriprise Financial INC | 7.5k | 0.17% | $7.9M | trimmed -10.3% | 2013 Q4 |
| Nuveen | 7.3k | 0.17% | $7.7M | added +2.4% | 2019 Q2 |
| Vest Financial, LLC | 6.6k | 0.15% | $7.0M | added +14.9% | 2025 Q1 |
| Swiss National Bank | 6.4k | 0.15% | $6.7M | unchanged | 2013 Q4 |
| Quantinno Capital Management LP | 6.1k | 0.14% | $6.4M | added +3.3% | 2021 Q4 |
| Algert Global LLC | 6.0k | 0.14% | $6.3M | added +302.8% | 2022 Q1 |
| Markel Group | 5.2k | 0.12% | $5.5M | unchanged | 2013 Q4 |
| BNP Paribas Financial Markets | 5.2k | 0.12% | $5.4M | added +211.5% | 2013 Q4 |
Largest 50 of 315 shown; the full ranked, searchable register is at boothcheck.com/holders/GHC. 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.