Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
363 institutional managers reported holding ACLS for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 64%. 61 opened new positions; 62 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 4.94M | 15.94% | $459.6M | added +2.3% | ≤2013 |
| Vanguard Group | 4.13M | 13.32% | $384.3M | unchanged | ≤2013 |
| FMR (Fidelity) | 2.43M | 7.85% | $226.3M | added +298.2% | 2020 Q3 |
| Reinhart Partners, LLC. | 1.66M | 5.35% | $154.3M | added +4.3% | 2024 Q1 |
| Balyasny Asset Management | 1.36M | 4.41% | $127.0M | added +460.4% | 2025 Q2 |
| Victory Capital Management INC | 1.28M | 4.13% | $119.1M | trimmed -29.2% | 2014 Q4 |
| State Street | 1.19M | 3.84% | $110.7M | unchanged | ≤2013 |
| BNP Paribas Financial Markets | 1.15M | 3.71% | $107.1M | trimmed -8.3% | 2014 Q2 |
| American Century Companies INC | 951.9k | 3.07% | $88.6M | trimmed -22.8% | 2021 Q1 |
| Dimensional Fund Advisors | 844.1k | 2.73% | $78.6M | unchanged | ≤2013 |
| Geode Capital | 811.3k | 2.62% | $75.5M | trimmed -11.6% | ≤2013 |
| PRIMECAP Management | 658.7k | 2.13% | $61.3M | trimmed -0.9% | 2014 Q1 |
| Pacer Advisors, INC. | 651.4k | 2.10% | $60.6M | added +4504.4% | 2022 Q1 |
| Morgan Stanley | 581.6k | 1.88% | $54.1M | added +66.1% | ≤2013 |
| D. E. Shaw | 544.4k | 1.76% | $50.7M | added +15.8% | 2021 Q3 |
| Goldman Sachs | 497.6k | 1.61% | $46.3M | trimmed -21% | ≤2013 |
| Manufacturers Life Insurance Company, THE | 491.7k | 1.59% | $45.8M | added +3402.5% | ≤2013 |
| Charles Schwab Investment Management | 445.8k | 1.44% | $41.5M | added +3.4% | ≤2013 |
| UBS | 441.8k | 1.43% | $41.1M | added +61% | ≤2013 |
| LSV Asset Management | 429.5k | 1.39% | $40.0M | unchanged | 2025 Q3 |
| Northern Trust | 416.7k | 1.34% | $38.8M | added +2.9% | ≤2013 |
| Boston Trust Walden CORP | 378.5k | 1.22% | $35.2M | trimmed -11.5% | 2024 Q3 |
| T. Rowe Price | 362.2k | 1.17% | $33.7M | trimmed -5.4% | 2022 Q1 |
| Boston Partners | 340.3k | 1.10% | $31.7M | trimmed -19.4% | 2024 Q1 |
| Grantham, Mayo, Van Otterloo & CO. LLC | 334.8k | 1.08% | $31.2M | added +3.7% | 2022 Q1 |
| Allspring Global Investments Holdings, LLC | 258.5k | 0.83% | $24.1M | trimmed -2.8% | 2021 Q4 |
| Segall Bryant & Hamill, LLC | 227.7k | 0.73% | $21.2M | added +122.8% | 2025 Q3 |
| Principal Financial Group INC | 210.2k | 0.68% | $19.6M | added +3.4% | 2017 Q4 |
| Federated Hermes, INC. | 209.2k | 0.68% | $19.5M | trimmed -24.3% | 2023 Q2 |
| BNY Mellon | 199.7k | 0.65% | $18.6M | trimmed -1.9% | ≤2013 |
| Two Sigma | 197.6k | 0.64% | $18.4M | added +177.3% | 2023 Q1 |
| Kennedy Capital Management LLC | 178.0k | 0.57% | $16.6M | trimmed -13.5% | 2019 Q3 |
| Invesco | 165.1k | 0.53% | $15.4M | trimmed -65.5% | ≤2013 |
| First Trust Advisors LP | 137.8k | 0.45% | $12.8M | added +55.9% | 2022 Q2 |
| Royce & Associates | 125.3k | 0.40% | $11.7M | added +7.7% | 2018 Q4 |
| Bank OF America CORP /DE/ | 111.0k | 0.36% | $10.3M | trimmed -6.1% | ≤2013 |
| Public Sector Pension Investment Board | 109.8k | 0.35% | $10.2M | trimmed -15.4% | 2017 Q4 |
| First Eagle Investment Management | 100.6k | 0.33% | $9.4M | trimmed -26.2% | 2025 Q2 |
| Emerald Advisers, LLC | 96.2k | 0.31% | $9.0M | opened | 2026 Q1 |
| Rhumbline Advisers | 87.3k | 0.28% | $8.1M | trimmed -0.9% | ≤2013 |
| Sagefield Capital LP | 82.2k | 0.27% | $7.7M | opened | 2026 Q1 |
| Ameriprise Financial INC | 78.7k | 0.25% | $7.3M | trimmed -8.6% | ≤2013 |
| Creative Planning | 77.7k | 0.25% | $7.2M | added +5.7% | 2023 Q1 |
| Portolan Capital Management, LLC | 77.2k | 0.25% | $7.2M | opened | 2026 Q1 |
| Legal & General Group PLC | 71.9k | 0.23% | $6.7M | trimmed -7.9% | 2016 Q4 |
| Nuveen | 71.4k | 0.23% | $6.6M | added +1.4% | 2018 Q1 |
| Susquehanna Portfolio Strategies, LLC | 68.2k | 0.22% | $6.3M | unchanged | 2025 Q2 |
| Swiss National Bank | 61.2k | 0.20% | $5.7M | unchanged | 2017 Q2 |
| Wells Fargo & COMPANY/MN | 51.7k | 0.17% | $4.8M | trimmed -35.2% | ≤2013 |
| Holocene Advisors | 51.6k | 0.17% | $4.8M | added +228.9% | 2024 Q1 |
Largest 50 of 363 shown; the full ranked, searchable register is at boothcheck.com/holders/ACLS. 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.