Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
232 institutional managers reported holding STC for the quarter ended Mar 31, 2026. Together they hold about 95% of shares outstanding; the top 10 hold 63%. 30 opened new positions; 33 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 5.13M | 16.64% | $315.7M | added +7.3% | ≤2013 |
| FMR (Fidelity) | 2.73M | 8.88% | $168.4M | added +0.7% | 2021 Q1 |
| Neuberger Berman Group LLC | 2.57M | 8.34% | $158.2M | added +19.4% | 2023 Q3 |
| Vanguard Group | 2.17M | 7.05% | $133.7M | added +6.2% | ≤2013 |
| Dimensional Fund Advisors | 1.54M | 5.01% | $95.0M | unchanged | ≤2013 |
| Allspring Global Investments Holdings, LLC | 1.49M | 4.83% | $91.7M | trimmed -8.4% | 2021 Q4 |
| State Street | 1.30M | 4.21% | $79.9M | added +5.1% | ≤2013 |
| Capital International Investors | 858.4k | 2.79% | $52.9M | added +1.9% | 2024 Q4 |
| Millennium Management | 808.0k | 2.62% | $49.7M | added +15.2% | 2016 Q3 |
| Geode Capital | 737.3k | 2.39% | $45.4M | added +11.1% | ≤2013 |
| Cooke & Bieler LP | 628.5k | 2.04% | $38.7M | added +11.6% | 2023 Q2 |
| Charles Schwab Investment Management | 498.6k | 1.62% | $30.7M | unchanged | ≤2013 |
| Citadel Advisors | 484.8k | 1.57% | $29.9M | added +49.9% | 2017 Q2 |
| Goldman Sachs | 443.9k | 1.44% | $27.3M | trimmed -6.7% | ≤2013 |
| Davenport & CO LLC | 390.5k | 1.27% | $24.0M | added +6.8% | 2021 Q3 |
| Victory Capital Management INC | 360.8k | 1.17% | $22.2M | trimmed -51.1% | 2019 Q3 |
| Northern Trust | 352.2k | 1.14% | $21.7M | added +9% | ≤2013 |
| MFS Investment Management | 338.7k | 1.10% | $20.9M | trimmed -4.3% | 2024 Q2 |
| Morgan Stanley | 321.6k | 1.04% | $19.8M | trimmed -8.1% | ≤2013 |
| BNY Mellon | 261.9k | 0.85% | $16.1M | added +1.7% | ≤2013 |
| Tributary Capital Management, LLC | 256.9k | 0.83% | $15.8M | trimmed -2.9% | 2020 Q3 |
| Zimmer Partners, LP | 245.9k | 0.80% | $15.1M | trimmed -30.6% | 2025 Q4 |
| Nuveen | 229.8k | 0.75% | $14.1M | added +44.2% | 2019 Q2 |
| Wellington Management | 217.5k | 0.71% | $13.4M | added +17.3% | 2023 Q1 |
| Bank OF America CORP /DE/ | 215.2k | 0.70% | $13.3M | added +1.2% | ≤2013 |
| Rockefeller Capital Management L.p. | 213.8k | 0.69% | $13.2M | unchanged | 2022 Q2 |
| Invesco | 181.1k | 0.59% | $11.2M | trimmed -7% | ≤2013 |
| Principal Financial Group INC | 146.9k | 0.48% | $9.0M | added +10% | ≤2013 |
| RBF Capital, LLC | 145.5k | 0.47% | $9.0M | unchanged | ≤2013 |
| Hotchkis & Wiley Capital Management LLC | 138.3k | 0.45% | $8.5M | added +3.4% | 2022 Q3 |
| First Eagle Investment Management | 125.6k | 0.41% | $7.7M | added +3.2% | 2021 Q2 |
| Heartland Advisors INC | 125.0k | 0.41% | $7.7M | unchanged | 2023 Q2 |
| SEI Investments CO | 123.2k | 0.40% | $7.6M | added +36.8% | 2019 Q1 |
| Boston Partners | 114.1k | 0.37% | $7.0M | added +4.1% | 2023 Q1 |
| UBS | 113.3k | 0.37% | $7.0M | trimmed -4.4% | ≤2013 |
| Two Sigma | 110.0k | 0.36% | $6.8M | added +42.8% | 2021 Q1 |
| Raymond James Financial INC | 109.1k | 0.35% | $6.7M | trimmed -2.1% | 2020 Q3 |
| Public Sector Pension Investment Board | 108.1k | 0.35% | $6.7M | added +11.5% | ≤2013 |
| Cramer Rosenthal Mcglynn LLC | 106.4k | 0.34% | $6.5M | trimmed -2.8% | 2023 Q1 |
| Teacher Retirement System OF Texas | 104.7k | 0.34% | $6.4M | added +42.8% | 2024 Q2 |
| Envestnet Asset Management INC | 102.9k | 0.33% | $6.3M | trimmed -6.7% | 2020 Q3 |
| Jacobs Levy Equity Management, INC | 102.5k | 0.33% | $6.3M | added +18.2% | 2019 Q3 |
| WCM Investment Management | 101.5k | 0.33% | $6.2M | unchanged | 2025 Q4 |
| Rhumbline Advisers | 85.0k | 0.28% | $5.2M | added +8.3% | ≤2013 |
| Renaissance Technologies | 80.2k | 0.26% | $4.9M | trimmed -13.9% | 2013 Q3 |
| Burkehill Global Management, LP | 75.0k | 0.24% | $4.6M | unchanged | 2025 Q4 |
| Legal & General Group PLC | 74.4k | 0.24% | $4.6M | trimmed -2% | 2014 Q3 |
| Qube Research & Technologies LTD | 71.5k | 0.23% | $4.4M | added +374.8% | 2025 Q4 |
| Wells Fargo & COMPANY/MN | 68.1k | 0.22% | $4.2M | trimmed -23.3% | ≤2013 |
| Ameriprise Financial INC | 65.0k | 0.21% | $4.0M | trimmed -0.5% | ≤2013 |
Largest 50 of 232 shown; the full ranked, searchable register is at boothcheck.com/holders/STC. 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.