Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
396 institutional managers reported holding MSGS for the quarter ended Mar 31, 2026. Together they hold about 73% of shares outstanding; the top 10 hold 42%. 59 opened new positions; 37 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 2.01M | 8.32% | $650.9M | added +0.8% | 2015 Q4 |
| Silver Lake Group, L.l.c. (focused) | 1.90M | 7.86% | $614.7M | unchanged | 2017 Q4 |
| Vanguard Group | 1.86M | 7.71% | $603.0M | added +1.4% | 2015 Q4 |
| T. Rowe Price Investment Management, INC. | 790.6k | 3.27% | $255.8M | added +505% | 2024 Q3 |
| Ariel Investments, LLC | 717.3k | 2.97% | $232.1M | trimmed -0.7% | 2015 Q4 |
| Gates Foundation Trust (focused) | 592.4k | 2.45% | $191.7M | unchanged | 2021 Q3 |
| Gamco Investors, INC. et al | 587.7k | 2.43% | $190.1M | trimmed -4.2% | 2015 Q4 |
| T. Rowe Price | 584.6k | 2.42% | $189.1M | trimmed -16.4% | 2015 Q4 |
| State Street | 564.9k | 2.34% | $182.8M | added +4.9% | 2015 Q4 |
| Clearbridge Investments, LLC | 453.6k | 1.88% | $146.7M | unchanged | 2015 Q4 |
| GAMCO (Gabelli) | 390.9k | 1.62% | $126.5M | trimmed -0.9% | 2015 Q4 |
| Toms Capital Investment Management LP (focused) | 347.0k | 1.44% | $112.3M | added +5.2% | 2025 Q3 |
| Geode Capital | 310.3k | 1.28% | $100.4M | added +6.6% | 2015 Q3 |
| Morgan Stanley | 307.0k | 1.27% | $99.3M | trimmed -2.5% | 2015 Q3 |
| Victory Capital Management INC | 257.8k | 1.07% | $83.4M | trimmed -22.9% | 2019 Q3 |
| Reinhart Partners, LLC. | 225.0k | 0.93% | $72.8M | added +4.7% | 2025 Q4 |
| Samlyn Capital, LLC | 217.9k | 0.90% | $70.5M | opened | 2026 Q1 |
| Contour Asset Management LLC (focused) | 205.3k | 0.85% | $66.4M | added +7.5% | 2025 Q3 |
| Renaissance Technologies | 172.0k | 0.71% | $55.6M | added +45.9% | 2020 Q1 |
| Bamco INC /NY/ | 165.0k | 0.68% | $53.4M | trimmed -17.5% | 2015 Q4 |
| Invesco | 155.2k | 0.64% | $50.2M | added +309.6% | 2017 Q1 |
| Southpoint Capital Advisors LP (focused) | 155.0k | 0.64% | $50.1M | added +3.3% | 2025 Q2 |
| Systematic Financial Management LP | 154.5k | 0.64% | $50.0M | trimmed -1.3% | 2020 Q2 |
| Greenhouse Funds Lllp (focused) | 154.2k | 0.64% | $49.9M | trimmed -63.5% | 2021 Q4 |
| Charles Schwab Investment Management | 133.4k | 0.55% | $43.2M | added +4.2% | 2015 Q4 |
| Gotham Asset Management | 126.6k | 0.52% | $41.0M | added +21.1% | 2020 Q3 |
| Northern Trust | 124.0k | 0.51% | $40.1M | added +2.5% | 2015 Q3 |
| Bollard Group LLC | 121.0k | 0.50% | $39.1M | unchanged | 2025 Q2 |
| Manufacturers Life Insurance Company, THE | 118.2k | 0.49% | $38.2M | trimmed -25.1% | 2020 Q1 |
| Walleye Capital LLC | 113.7k | 0.47% | $36.8M | trimmed -1.6% | 2022 Q2 |
| UBS | 112.9k | 0.47% | $36.5M | added +27.6% | 2015 Q4 |
| Franklin Resources | 111.9k | 0.46% | $36.2M | trimmed -7.9% | 2020 Q3 |
| Wellington Management | 108.4k | 0.45% | $35.1M | trimmed -12.9% | 2022 Q3 |
| Quantinno Capital Management LP | 104.3k | 0.43% | $33.7M | added +76.5% | 2023 Q1 |
| Marshall Wace | 99.2k | 0.41% | $32.1M | added +176% | 2024 Q2 |
| Royal Bank OF Canada | 96.2k | 0.40% | $31.1M | trimmed -2.9% | 2015 Q4 |
| Clearline Capital LP | 95.1k | 0.39% | $30.8M | trimmed -23.2% | 2020 Q2 |
| Balyasny Asset Management | 93.8k | 0.39% | $30.4M | opened | 2026 Q1 |
| Dimensional Fund Advisors | 93.7k | 0.39% | $30.3M | trimmed -24.9% | 2015 Q4 |
| AQR Capital | 90.7k | 0.38% | $29.4M | added +51.1% | 2022 Q1 |
| CastleKnight Management LP | 89.8k | 0.37% | $29.1M | trimmed -18.5% | 2023 Q1 |
| Principal Financial Group INC | 87.9k | 0.36% | $28.4M | added +2% | 2017 Q1 |
| BNY Mellon | 87.7k | 0.36% | $28.4M | trimmed -3.3% | 2015 Q3 |
| Pinnacle Associates LTD | 86.0k | 0.36% | $27.8M | trimmed -6% | 2015 Q4 |
| Shapiro Capital Management LLC (focused) | 72.1k | 0.30% | $23.3M | trimmed -38.8% | 2021 Q1 |
| Goldman Sachs | 68.5k | 0.28% | $22.1M | added +277.1% | 2015 Q4 |
| Bank OF America CORP /DE/ | 67.8k | 0.28% | $21.9M | trimmed -21% | 2015 Q4 |
| D. E. Shaw | 64.9k | 0.27% | $21.0M | added +105.9% | 2015 Q4 |
| Public Sector Pension Investment Board | 64.3k | 0.27% | $20.8M | added +3.4% | 2023 Q3 |
| Deutsche Bank AG\ | 60.8k | 0.25% | $19.7M | trimmed -0.6% | 2015 Q4 |
Largest 50 of 396 shown; the full ranked, searchable register is at boothcheck.com/holders/MSGS. 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.