Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
384 institutional managers reported holding BOX for the quarter ended Mar 31, 2026. Together they hold about 92% of shares outstanding; the top 10 hold 53%. 59 opened new positions; 81 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 25.32M | 16.94% | $599.0M | added +0.5% | 2015 Q1 |
| Vanguard Group | 18.76M | 12.55% | $443.9M | added +1.6% | 2015 Q1 |
| Earnest Partners LLC | 7.31M | 4.89% | $172.8M | trimmed -2.9% | 2021 Q3 |
| State Street | 5.68M | 3.80% | $134.4M | added +1.8% | 2015 Q1 |
| Arrowstreet Capital | 4.92M | 3.29% | $116.4M | added +9% | 2020 Q2 |
| Acadian Asset Management | 4.73M | 3.16% | $111.8M | added +5.1% | 2019 Q4 |
| Geode Capital | 3.53M | 2.37% | $83.6M | added +2.4% | 2015 Q2 |
| Bank OF America CORP /DE/ | 3.35M | 2.24% | $79.3M | trimmed -3.4% | 2015 Q1 |
| SEI Investments CO | 3.20M | 2.14% | $75.7M | trimmed -4% | 2017 Q4 |
| Dimensional Fund Advisors | 2.67M | 1.79% | $63.3M | added +0.5% | 2021 Q1 |
| Marshall Wace | 2.63M | 1.76% | $62.2M | added +50.6% | 2024 Q3 |
| Squarepoint Ops LLC | 2.61M | 1.75% | $61.8M | added +340.3% | 2024 Q3 |
| Goldman Sachs | 2.46M | 1.65% | $58.2M | added +25.4% | 2015 Q1 |
| Citadel Advisors | 2.34M | 1.56% | $55.3M | added +800.3% | 2015 Q1 |
| Morgan Stanley | 1.76M | 1.18% | $41.7M | trimmed -2.4% | 2015 Q1 |
| Charles Schwab Investment Management | 1.57M | 1.05% | $37.0M | added +16.1% | 2015 Q1 |
| Northern Trust | 1.47M | 0.98% | $34.8M | added +1.1% | 2015 Q1 |
| Nomura Asset Management International INC. | 1.33M | 0.89% | $31.6M | trimmed -17.1% | 2025 Q2 |
| MFS Investment Management | 1.29M | 0.87% | $30.6M | added +60.7% | 2025 Q3 |
| UBS | 1.29M | 0.86% | $30.5M | trimmed -37.7% | 2015 Q1 |
| Two Sigma | 1.26M | 0.84% | $29.8M | added +33.4% | 2016 Q2 |
| Man Group | 1.19M | 0.79% | $28.1M | added +39% | 2018 Q1 |
| Janus Henderson | 1.15M | 0.77% | $27.1M | added +74.9% | 2021 Q3 |
| First Trust Advisors LP | 1.10M | 0.74% | $26.1M | trimmed -5.2% | 2016 Q3 |
| Jane Street | 1.09M | 0.73% | $25.9M | added +7% | 2015 Q3 |
| Fort Washington Investment Advisors INC /OH/ | 1.03M | 0.69% | $24.4M | added +4.4% | 2017 Q2 |
| Shaolin Capital Management LLC | 1.02M | 0.68% | $24.0M | added +598% | 2025 Q1 |
| Principal Financial Group INC | 1.01M | 0.68% | $23.9M | added +10.2% | 2017 Q2 |
| Nuveen | 909.7k | 0.61% | $21.5M | added +10.6% | 2019 Q2 |
| BNY Mellon | 886.8k | 0.59% | $21.0M | trimmed -6.1% | 2015 Q1 |
| BNP Paribas Financial Markets | 862.6k | 0.58% | $20.4M | trimmed -42.5% | 2015 Q1 |
| Millennium Management | 778.8k | 0.52% | $18.4M | added +25.9% | 2015 Q2 |
| Oberweis Asset Management INC/ | 771.5k | 0.52% | $18.3M | added +18.3% | 2024 Q3 |
| Natixis Advisors, LLC | 737.9k | 0.49% | $17.5M | added +19% | 2021 Q2 |
| Public Sector Pension Investment Board | 707.4k | 0.47% | $16.7M | added +41.1% | 2024 Q1 |
| Aristotle Capital Boston, LLC | 695.5k | 0.47% | $16.5M | trimmed -13.7% | 2021 Q1 |
| Jones Financial Companies Lllp | 686.1k | 0.46% | $16.2M | added +38294.8% | 2023 Q3 |
| Invesco | 664.4k | 0.45% | $15.7M | added +13.7% | 2020 Q1 |
| Trexquant Investment LP | 643.6k | 0.43% | $15.2M | added +118.9% | 2024 Q1 |
| Royal Bank OF Canada | 642.4k | 0.43% | $15.2M | trimmed -0.6% | 2015 Q1 |
| Divisar Capital Management LLC (focused) | 638.0k | 0.43% | $15.1M | added +239.3% | 2020 Q1 |
| Point72 | 600.6k | 0.40% | $14.2M | trimmed -46.9% | 2025 Q2 |
| Fisher Investments | 593.9k | 0.40% | $14.1M | trimmed -2.2% | 2022 Q2 |
| Susquehanna International Group | 528.8k | 0.35% | $12.5M | added +1222.2% | 2017 Q3 |
| Ameriprise Financial INC | 523.7k | 0.35% | $12.4M | trimmed -8.6% | 2016 Q3 |
| HighTower Advisors, LLC | 521.0k | 0.35% | $12.3M | added +19.6% | 2017 Q2 |
| D. E. Shaw | 492.3k | 0.33% | $11.6M | added +61% | 2019 Q1 |
| AllianceBernstein | 475.2k | 0.32% | $11.2M | added +50.2% | 2015 Q2 |
| Mackenzie Financial CORP | 456.5k | 0.30% | $10.8M | added +32.1% | 2021 Q3 |
| Schroder Investment Management Group | 447.6k | 0.30% | $10.6M | trimmed -39.2% | 2022 Q1 |
Largest 50 of 384 shown; the full ranked, searchable register is at boothcheck.com/holders/BOX. 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.