Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
367 institutional managers reported holding ACIW for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 55%. 42 opened new positions; 72 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 17.02M | 16.55% | $698.0M | trimmed -0.9% | ≤2013 |
| Vanguard Group | 13.50M | 13.13% | $553.8M | added +0.7% | ≤2013 |
| Franklin Resources | 6.62M | 6.43% | $271.4M | added +13.3% | 2020 Q3 |
| State Street | 4.15M | 4.04% | $170.2M | unchanged | 2015 Q4 |
| Geode Capital | 3.17M | 3.09% | $130.2M | added +3.1% | ≤2013 |
| Dimensional Fund Advisors | 2.81M | 2.73% | $115.4M | added +13.9% | ≤2013 |
| Hood River Capital Management LLC | 2.39M | 2.33% | $98.1M | trimmed -21.2% | 2023 Q4 |
| Reinhart Partners, LLC. | 2.23M | 2.17% | $91.7M | added +97.5% | 2018 Q4 |
| North Reef Capital Management LP | 2.23M | 2.17% | $91.5M | added +13.2% | 2022 Q1 |
| FMR (Fidelity) | 2.17M | 2.11% | $88.8M | added +88.2% | 2018 Q4 |
| Fuller & Thaler Asset Management, INC. | 2.15M | 2.09% | $88.2M | added +18.3% | 2025 Q3 |
| AllianceBernstein | 2.03M | 1.97% | $83.2M | trimmed -4.2% | ≤2013 |
| Morgan Stanley | 1.91M | 1.86% | $78.5M | trimmed -12.6% | ≤2013 |
| Congress Asset Management CO | 1.83M | 1.78% | $75.2M | added +31.8% | 2024 Q4 |
| Arrowstreet Capital | 1.77M | 1.72% | $72.6M | added +5.2% | 2023 Q4 |
| London CO OF Virginia | 1.68M | 1.63% | $68.9M | added +19.9% | 2020 Q3 |
| Charles Schwab Investment Management | 1.32M | 1.29% | $54.3M | added +2.3% | ≤2013 |
| Northern Trust | 1.25M | 1.21% | $51.2M | added +0.6% | ≤2013 |
| T. Rowe Price | 1.09M | 1.06% | $44.9M | trimmed -1.5% | ≤2013 |
| Rice Hall James & Associates, LLC | 1.00M | 0.98% | $41.2M | added +2.2% | ≤2013 |
| Nomura Asset Management International INC. | 999.6k | 0.97% | $41.0M | trimmed -1.6% | 2025 Q4 |
| Global Alpha Capital Management LTD. | 915.7k | 0.89% | $37.6M | added +38.2% | 2015 Q2 |
| MFS Investment Management | 870.1k | 0.85% | $35.7M | trimmed -3.9% | 2020 Q3 |
| Voya Investment Management LLC | 756.0k | 0.73% | $31.0M | trimmed -19.4% | ≤2013 |
| Palisade Capital Management, LP | 708.4k | 0.69% | $29.1M | trimmed -6.8% | ≤2013 |
| UBS | 705.1k | 0.69% | $28.9M | added +33.9% | ≤2013 |
| Nuveen | 700.2k | 0.68% | $28.7M | trimmed -5.7% | 2019 Q2 |
| Aristotle Capital Boston, LLC | 660.8k | 0.64% | $27.1M | trimmed -13.8% | 2014 Q4 |
| BNY Mellon | 628.5k | 0.61% | $25.8M | trimmed -1.4% | ≤2013 |
| Two Sigma | 611.3k | 0.59% | $25.1M | added +10.8% | 2024 Q3 |
| Principal Financial Group INC | 610.6k | 0.59% | $25.0M | added +4.3% | ≤2013 |
| Goldman Sachs | 605.2k | 0.59% | $24.8M | trimmed -2.7% | ≤2013 |
| Bank OF America CORP /DE/ | 594.3k | 0.58% | $24.4M | trimmed -8% | ≤2013 |
| North Star Asset Management INC | 588.9k | 0.57% | $24.2M | trimmed -5.9% | 2014 Q1 |
| MetLife Investment Management, LLC | 523.8k | 0.51% | $21.5M | added +3.1% | 2017 Q4 |
| Invesco | 516.6k | 0.50% | $21.2M | added +6.2% | ≤2013 |
| WCM Investment Management | 516.3k | 0.50% | $21.2M | added +16.8% | 2019 Q3 |
| AQR Capital | 510.7k | 0.50% | $20.9M | added +42.6% | 2017 Q4 |
| SEI Investments CO | 503.2k | 0.49% | $20.6M | added +9.5% | 2014 Q4 |
| Swedbank Robur | 464.1k | 0.45% | $19.0M | trimmed -2.2% | 2024 Q2 |
| Wellington Management | 457.2k | 0.45% | $18.8M | trimmed -21.7% | 2021 Q3 |
| Envestnet Asset Management INC | 441.5k | 0.43% | $18.1M | added +46.3% | 2015 Q2 |
| Assenagon Asset Management S.a. | 406.2k | 0.40% | $16.7M | trimmed -48% | 2022 Q2 |
| Public Sector Pension Investment Board | 397.5k | 0.39% | $16.3M | trimmed -5.3% | 2023 Q4 |
| Public Employees Retirement Association OF Colorado | 389.1k | 0.38% | $16.0M | trimmed -26% | ≤2013 |
| Weitz Investment Management, INC. (focused) | 367.7k | 0.36% | $15.1M | unchanged | ≤2013 |
| Value Holdings Management CO. LLC (focused) | 360.9k | 0.35% | $14.8M | added +6.2% | 2020 Q3 |
| Victory Capital Management INC | 355.7k | 0.35% | $14.6M | trimmed -2.8% | 2019 Q2 |
| Renaissance Technologies | 350.3k | 0.34% | $14.4M | added +1875.6% | 2025 Q4 |
| Janus Henderson | 328.9k | 0.32% | $13.5M | added +72.3% | ≤2013 |
Largest 50 of 367 shown; the full ranked, searchable register is at boothcheck.com/holders/ACIW. 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.