Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
178 institutional managers reported holding BY for the quarter ended Mar 31, 2026. Together they hold about 55% of shares outstanding; the top 10 hold 30%. 22 opened new positions; 19 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 3.29M | 7.32% | $104.1M | unchanged | 2017 Q3 |
| Dimensional Fund Advisors | 2.37M | 5.25% | $74.8M | added +1.6% | 2019 Q1 |
| Vanguard Group | 1.85M | 4.11% | $58.5M | added +1.5% | 2017 Q3 |
| State Street | 1.03M | 2.29% | $32.6M | added +3.4% | 2017 Q3 |
| Wellington Management | 1.02M | 2.27% | $32.4M | trimmed -14.2% | 2024 Q2 |
| Boston Partners | 918.4k | 2.04% | $29.0M | added +30% | 2017 Q3 |
| American Century Companies INC | 905.2k | 2.01% | $28.6M | added +7.7% | 2020 Q2 |
| FMR (Fidelity) | 826.1k | 1.83% | $26.1M | trimmed -13.6% | 2020 Q1 |
| Geode Capital | 788.0k | 1.75% | $24.9M | added +3.1% | 2017 Q3 |
| Aristotle Capital Boston, LLC | 674.8k | 1.50% | $21.3M | trimmed -15.8% | 2017 Q2 |
| AQR Capital | 665.4k | 1.48% | $21.0M | added +31.8% | 2021 Q2 |
| Federated Hermes, INC. | 624.4k | 1.39% | $19.7M | added +8.9% | 2021 Q3 |
| Ararat Capital Management LP (focused) | 623.8k | 1.39% | $19.7M | trimmed -4.2% | 2020 Q4 |
| T. Rowe Price Investment Management, INC. | 614.7k | 1.36% | $19.4M | added +168.3% | 2025 Q1 |
| Nuveen | 424.9k | 0.94% | $13.4M | trimmed -5.7% | 2019 Q2 |
| Bridgeway Capital Management, LLC | 423.5k | 0.94% | $13.4M | trimmed -0.9% | 2019 Q2 |
| Qube Research & Technologies LTD | 341.5k | 0.76% | $10.8M | trimmed -1% | 2021 Q1 |
| Goldman Sachs | 299.4k | 0.67% | $9.5M | added +8.4% | 2018 Q2 |
| Millennium Management | 287.7k | 0.64% | $9.1M | added +80.4% | 2017 Q2 |
| Morgan Stanley | 282.0k | 0.63% | $8.9M | trimmed -17.5% | 2017 Q3 |
| Charles Schwab Investment Management | 268.4k | 0.60% | $8.5M | trimmed -1.1% | 2017 Q3 |
| Northern Trust | 266.4k | 0.59% | $8.4M | added +2.8% | 2017 Q3 |
| Assenagon Asset Management S.a. | 227.3k | 0.51% | $7.2M | opened | 2026 Q1 |
| Maltese Capital Management LLC | 220.6k | 0.49% | $7.0M | trimmed -16.7% | 2025 Q2 |
| UBS | 213.4k | 0.47% | $6.7M | added +47.3% | 2017 Q3 |
| Two Sigma | 207.0k | 0.46% | $6.5M | added +17.2% | 2021 Q1 |
| Empowered Funds, LLC | 202.5k | 0.45% | $6.4M | added +5% | 2023 Q2 |
| Detalus Advisors, LLC | 199.8k | 0.44% | $6.3M | trimmed -2.3% | 2019 Q4 |
| Endeavour Capital Advisors INC (focused) | 180.6k | 0.40% | $5.7M | added +16.4% | 2025 Q2 |
| Denali Advisors LLC | 167.4k | 0.37% | $5.3M | added +33.1% | 2025 Q1 |
| BNY Mellon | 163.3k | 0.36% | $5.2M | trimmed -1.3% | 2017 Q3 |
| Curi Capital, LLC | 144.3k | 0.32% | $4.6M | added +4.3% | 2022 Q3 |
| Creative Planning | 143.2k | 0.32% | $4.5M | added +16.9% | 2024 Q1 |
| Bank OF America CORP /DE/ | 135.8k | 0.30% | $4.3M | added +11.3% | 2017 Q3 |
| Bartlett & CO. Wealth Management LLC | 134.2k | 0.30% | $4.2M | unchanged | 2021 Q4 |
| Zacks Investment Management | 131.0k | 0.29% | $4.1M | opened | 2026 Q1 |
| SEI Investments CO | 129.6k | 0.29% | $4.1M | trimmed -1.4% | 2017 Q3 |
| Mariner, LLC | 129.0k | 0.29% | $4.1M | added +40.4% | 2025 Q3 |
| Mendon Capital Advisors CORP | 125.0k | 0.28% | $4.0M | unchanged | 2023 Q4 |
| Tudor Investment | 120.4k | 0.27% | $3.8M | added +21.2% | 2025 Q2 |
| Jacobs Levy Equity Management, INC | 117.8k | 0.26% | $3.7M | added +5.6% | 2021 Q1 |
| Fiducient Advisors LLC | 114.3k | 0.25% | $3.6M | added +39.8% | 2024 Q3 |
| Franklin Resources | 103.2k | 0.23% | $3.3M | added +386% | 2025 Q3 |
| Trexquant Investment LP | 101.6k | 0.23% | $3.2M | added +61.5% | 2023 Q4 |
| Thrivent Financial for Lutherans | 89.2k | 0.20% | $2.8M | unchanged | 2019 Q1 |
| AllianceBernstein | 87.5k | 0.19% | $2.8M | trimmed -2.2% | 2019 Q3 |
| First Trust Advisors LP | 86.5k | 0.19% | $2.7M | added +2.1% | 2024 Q4 |
| Blair William & CO/IL | 76.0k | 0.17% | $2.4M | trimmed -8.4% | 2025 Q2 |
| Susquehanna International Group | 75.4k | 0.17% | $2.4M | added +279.3% | 2021 Q2 |
| Arrowstreet Capital | 72.2k | 0.16% | $2.3M | trimmed -23.4% | 2023 Q1 |
Largest 50 of 178 shown; the full ranked, searchable register is at boothcheck.com/holders/BY. 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.