Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
685 institutional managers reported holding STRL for the quarter ended Mar 31, 2026. Together they hold about 89% of shares outstanding; the top 10 hold 47%. 132 opened new positions; 75 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 3.98M | 12.84% | $1.62B | added +1.6% | ≤2013 |
| Vanguard Group | 2.99M | 9.64% | $1.22B | added +0.9% | ≤2013 |
| FMR (Fidelity) | 1.47M | 4.75% | $600.4M | trimmed -10.9% | 2021 Q1 |
| Invesco | 1.19M | 3.83% | $484.1M | added +47.4% | 2016 Q1 |
| State Street | 1.09M | 3.51% | $443.2M | added +1.5% | ≤2013 |
| Geode Capital | 939.3k | 3.03% | $382.4M | added +16.4% | ≤2013 |
| First Trust Advisors LP | 878.0k | 2.83% | $357.5M | added +27.3% | 2017 Q3 |
| Renaissance Technologies | 766.9k | 2.47% | $312.3M | trimmed -4.5% | ≤2013 |
| Janus Henderson | 619.1k | 2.00% | $252.1M | added +7.5% | 2022 Q2 |
| Dimensional Fund Advisors | 568.6k | 1.83% | $231.5M | trimmed -2% | ≤2013 |
| Congress Asset Management CO | 497.1k | 1.60% | $202.4M | added +5.9% | 2023 Q2 |
| American Century Companies INC | 471.6k | 1.52% | $192.0M | trimmed -2.8% | 2021 Q2 |
| Morgan Stanley | 467.7k | 1.51% | $190.5M | trimmed -26.8% | ≤2013 |
| T. Rowe Price | 410.7k | 1.32% | $167.2M | added +17.5% | ≤2013 |
| Fuller & Thaler Asset Management, INC. | 403.0k | 1.30% | $164.1M | trimmed -33.4% | 2023 Q4 |
| Charles Schwab Investment Management | 386.5k | 1.25% | $157.4M | trimmed -1.9% | 2017 Q2 |
| Northern Trust | 363.7k | 1.17% | $148.1M | added +1.7% | ≤2013 |
| Capital Research Global Investors | 338.0k | 1.09% | $137.6M | trimmed -7.2% | 2024 Q3 |
| William Blair Investment Management, LLC | 323.4k | 1.04% | $131.7M | added +684% | 2025 Q3 |
| Clark Capital Management Group, INC. | 319.6k | 1.03% | $130.1M | added +5.5% | 2023 Q3 |
| Gw&k Investment Management, LLC | 304.7k | 0.98% | $124.1M | trimmed -2.3% | 2024 Q2 |
| UBS | 304.4k | 0.98% | $124.0M | added +4% | 2014 Q3 |
| Mirae Asset Global Etfs Holdings LTD. | 273.0k | 0.88% | $111.1M | added +18.6% | 2018 Q3 |
| Ameriprise Financial INC | 217.5k | 0.70% | $88.6M | trimmed -35.7% | 2018 Q4 |
| Principal Financial Group INC | 208.1k | 0.67% | $84.7M | trimmed -39.2% | 2022 Q2 |
| Goldman Sachs | 195.2k | 0.63% | $79.5M | trimmed -3.3% | ≤2013 |
| Nuveen | 192.1k | 0.62% | $78.2M | added +22.3% | 2019 Q2 |
| BNY Mellon | 187.1k | 0.60% | $76.2M | trimmed -0.6% | ≤2013 |
| Driehaus Capital Management LLC | 168.2k | 0.54% | $68.5M | trimmed -13.5% | 2022 Q4 |
| Munro Partners | 165.0k | 0.53% | $67.2M | opened | 2026 Q1 |
| Lord, Abbett & CO. LLC | 163.1k | 0.53% | $66.4M | added +57.4% | 2023 Q2 |
| Loomis Sayles & CO L P | 161.7k | 0.52% | $65.8M | trimmed -7.7% | 2023 Q4 |
| Raymond James Financial INC | 151.1k | 0.49% | $61.5M | added +7.5% | 2020 Q4 |
| AQR Capital | 150.1k | 0.48% | $61.1M | added +95.9% | 2019 Q2 |
| Capital Group (American Funds) | 132.4k | 0.43% | $53.9M | opened | 2026 Q1 |
| Bank OF America CORP /DE/ | 125.4k | 0.40% | $51.1M | trimmed -4.9% | 2017 Q3 |
| Envestnet Asset Management INC | 107.7k | 0.35% | $43.9M | added +6% | 2022 Q4 |
| Panagora Asset Management INC | 107.0k | 0.34% | $43.6M | unchanged | 2023 Q1 |
| LPL Financial LLC | 102.9k | 0.33% | $41.9M | added +20.1% | 2021 Q4 |
| BNP Paribas Financial Markets | 100.5k | 0.32% | $40.9M | trimmed -2.7% | 2017 Q2 |
| CI Investments INC. | 99.2k | 0.32% | $40.4M | opened | 2025 Q2 |
| Arrowstreet Capital | 94.2k | 0.30% | $38.3M | trimmed -14% | 2025 Q2 |
| Rhumbline Advisers | 92.6k | 0.30% | $37.7M | added +1.9% | 2017 Q2 |
| Fred Alger Management, LLC | 92.3k | 0.30% | $37.6M | trimmed -15.5% | 2025 Q1 |
| Franklin Resources | 90.5k | 0.29% | $36.8M | trimmed -7.8% | 2013 Q3 |
| Value Aligned Research Advisors, LLC | 89.5k | 0.29% | $36.4M | opened | 2026 Q1 |
| Osaic Holdings, INC. | 86.7k | 0.28% | $35.3M | trimmed -4.1% | 2020 Q1 |
| ArrowMark Colorado Holdings LLC | 86.0k | 0.28% | $35.0M | added +1.1% | 2025 Q4 |
| Cookson Peirce & CO INC | 82.7k | 0.27% | $33.7M | added +0.5% | 2023 Q4 |
| Emerald Advisers, LLC | 79.8k | 0.26% | $32.5M | trimmed -2.7% | 2025 Q2 |
Largest 50 of 685 shown; the full ranked, searchable register is at boothcheck.com/holders/STRL. 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.