Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
517 institutional managers reported holding BXP for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 67%. 65 opened new positions; 153 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 24.25M | 15.25% | $1.26B | added +0.8% | ≤2013 |
| Cohen & Steers | 20.85M | 13.11% | $1.08B | added +35.5% | 2024 Q2 |
| BlackRock | 16.46M | 10.35% | $854.2M | trimmed -10.1% | ≤2013 |
| State Street | 9.89M | 6.22% | $513.2M | trimmed -12.2% | ≤2013 |
| First Eagle Investment Management | 9.34M | 5.88% | $484.9M | added +174% | 2020 Q2 |
| APG Asset Management N.v. | 7.28M | 4.58% | $378.0M | trimmed -2.6% | ≤2013 |
| Invesco | 6.26M | 3.94% | $324.8M | added +52.6% | ≤2013 |
| Daiwa Securities Group INC. | 4.32M | 2.72% | $224.2M | added +40.9% | ≤2013 |
| Geode Capital | 4.31M | 2.71% | $223.8M | added +1% | ≤2013 |
| Citadel Advisors | 4.07M | 2.56% | $211.0M | added +132.2% | ≤2013 |
| Bank OF America CORP /DE/ | 2.69M | 1.69% | $139.8M | added +10.1% | ≤2013 |
| Morgan Stanley | 2.59M | 1.63% | $134.2M | trimmed -24.5% | ≤2013 |
| Earnest Partners LLC | 2.55M | 1.60% | $132.5M | trimmed -3.1% | 2013 Q4 |
| Charles Schwab Investment Management | 2.53M | 1.59% | $131.4M | added +4.2% | ≤2013 |
| Northern Trust | 2.37M | 1.49% | $123.2M | trimmed -27.7% | ≤2013 |
| Dimensional Fund Advisors | 2.34M | 1.47% | $121.7M | added +2.3% | ≤2013 |
| UBS | 2.15M | 1.35% | $111.5M | trimmed -17.9% | ≤2013 |
| SEI Investments CO | 2.00M | 1.26% | $103.8M | added +1.8% | ≤2013 |
| Goldman Sachs | 1.97M | 1.24% | $102.1M | trimmed -14.9% | ≤2013 |
| Prudential Financial INC | 1.33M | 0.84% | $69.1M | added +585.6% | ≤2013 |
| Legal & General Group PLC | 1.26M | 0.79% | $65.3M | trimmed -18.7% | ≤2013 |
| MFS Investment Management | 992.6k | 0.62% | $51.5M | trimmed -12.5% | 2023 Q3 |
| Barclays PLC | 918.1k | 0.58% | $47.6M | trimmed -15.1% | ≤2013 |
| BNY Mellon | 906.3k | 0.57% | $47.0M | trimmed -15.3% | ≤2013 |
| Duff & Phelps Investment Management CO | 888.8k | 0.56% | $46.1M | added +1.1% | 2024 Q1 |
| Hsbc Holdings PLC | 865.3k | 0.54% | $44.9M | added +11.4% | ≤2013 |
| Deutsche Bank AG\ | 818.8k | 0.52% | $42.5M | trimmed -48.5% | 2013 Q3 |
| T. Rowe Price | 810.1k | 0.51% | $42.0M | unchanged | ≤2013 |
| Franklin Resources | 750.3k | 0.47% | $38.9M | trimmed -21.6% | ≤2013 |
| Ameriprise Financial INC | 719.3k | 0.45% | $37.3M | trimmed -29.2% | ≤2013 |
| State of Tennessee, Department of Treasury | 696.2k | 0.44% | $36.1M | added +17.8% | 2013 Q3 |
| Woodline Partners LP | 682.8k | 0.43% | $35.4M | opened | 2026 Q1 |
| Divco West Real Estate Services, LLC (focused) | 680.5k | 0.43% | $35.3M | unchanged | 2022 Q4 |
| Sumitomo Mitsui Trust Group, INC. | 630.5k | 0.40% | $32.7M | trimmed -4.4% | ≤2013 |
| Strs Ohio | 582.6k | 0.37% | $30.2M | trimmed -9.6% | ≤2013 |
| BNP Paribas Financial Markets | 566.3k | 0.36% | $29.4M | trimmed -18.1% | ≤2013 |
| Nuveen | 565.1k | 0.35% | $29.3M | trimmed -41.4% | ≤2013 |
| Russell Investments Group, LTD. | 515.1k | 0.32% | $26.7M | trimmed -43% | 2016 Q4 |
| Cbre Investment Management Listed Real Assets LLC | 490.2k | 0.31% | $25.4M | trimmed -21.3% | 2019 Q1 |
| Lasalle Investment Management Securities LLC (focused) | 487.1k | 0.31% | $25.3M | added +98.5% | 2025 Q1 |
| Natixis Advisors, LLC | 429.7k | 0.27% | $22.3M | added +62.9% | ≤2013 |
| Jane Street | 424.4k | 0.27% | $22.0M | opened | 2017 Q1 |
| Susquehanna International Group | 400.8k | 0.25% | $20.8M | added +538.5% | 2019 Q2 |
| Royal Bank OF Canada | 395.7k | 0.25% | $20.5M | trimmed -15.5% | ≤2013 |
| Citigroup INC | 388.6k | 0.24% | $20.2M | trimmed -17.6% | ≤2013 |
| Causeway Capital Management LLC | 380.8k | 0.24% | $19.8M | added +40% | 2025 Q2 |
| First Manhattan CO. LLC. | 347.9k | 0.22% | $18.1M | added +11.7% | 2020 Q2 |
| Envestnet Asset Management INC | 346.4k | 0.22% | $18.0M | trimmed -9.5% | ≤2013 |
| Amundi | 341.1k | 0.21% | $17.7M | trimmed -44.1% | ≤2013 |
| Analyst IMS Investment Management Services LTD. | 339.5k | 0.21% | $17.6M | unchanged | 2022 Q3 |
Largest 50 of 517 shown; the full ranked, searchable register is at boothcheck.com/holders/BXP. 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.