Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionRockefeller Capital Management L.P.
Latest Disclosed Ownership31,372 shares
Latest Disclosed Value $ 1,628,210
Rockefeller Capital Management L.P. reports 16.82% increase in ownership of BXP / Boston Properties, Inc.

On May 14, 2026 - Rockefeller Capital Management L.P. filed a 13F-HR form disclosing ownership of 31,372 shares of Boston Properties, Inc. (US:BXP) valued at $1,628,207 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 16, 2026 disclosing 26,854 shares of Boston Properties, Inc.. This represents a change in shares of 16.82% during the quarter. The current value of the position is $1,946,633 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F BXP COM 101121101 31,372 4,518 16.82 1,628 -10.15 0.0029
2026-03-16 2025-12-31 13F/A-1 BXP COM 101121101 26,854 -994 -3.57 1,812 -12.46 0.0033
2026-02-14 2025-12-31 13F BXP COM 101121101 26,855 -993 1,812 0.0017
2025-11-14 2025-09-30 13F BXP COM 101121101 27,848 -3,356 -10.76 2,070 -1.66 0.0040
2025-08-14 2025-06-30 13F/A-1 BXP COM 101121101 31,204 3,640 13.21 2,105 13.66 0.0046
2025-08-08 2025-06-30 13F BXP COM 101121101 31,204 3,640 2,105 0.0027
2025-05-14 2025-03-31 13F BXP COM 101121101 27,564 -1,384 -4.78 1,852 -13.90 0.0046
2025-02-13 2024-12-31 13F BXP COM 101121101 28,948 -353 -1.20 2,151 -8.66 0.0056
2024-11-14 2024-09-30 13F BXP COM 101121101 29,301 -3,084 -9.52 2,355 18.10 0.0063
2024-08-12 2024-06-30 13F BOSTON PROPERTIES COM 101121101 32,385 4,294 15.29 1,994 8.72 0.0057
2024-05-14 2024-03-31 13F BOSTON PROPERTIES COM 101121101 28,091 -368 -1.29 1,835 -8.12 0.0054
2024-02-14 2023-12-31 13F BOSTON PROPERTIES COM 101121101 28,459 13,870 95.07 1,997 130.22 0.0067
2023-11-14 2023-09-30 13F BOSTON PROPERTIES COM 101121101 14,589 4,310 41.93 868 46.70 0.0033
2023-08-14 2023-06-30 13F BOSTON PROPERTIES COM 101121101 10,279 1,923 23.01 592 0.0023
2023-05-16 2023-03-31 13F BOSTON PROPERTIES COM 101121101 8,356 2,038 32.26 0 -100.00 0.0019
2023-03-06 2022-12-31 13F BOSTON PROPERTIES COM 101121101 6,318 479 8.20 426 -2.52 0.0021
2022-11-02 2022-09-30 13F BOSTON PROPERTIES COM 101121101 5,839 1,963 50.64 437 27.03 0.0023
2022-08-12 2022-06-30 13F BOSTON PROPERTIES COM 101121101 3,876 -249 -6.04 344 -35.22 0.0018
2022-05-13 2022-03-31 13F BOSTON PROPERTIES COM 101121101 4,125 105 2.61 531 14.69 0.0026
2022-02-14 2021-12-31 13F BOSTON PROPERTIES COM 101121101 4,020 -309 -7.14 463 -1.28 0.0022
2021-11-12 2021-09-30 13F BOSTON PROPERTIES COM 101121101 4,329 1,214 38.97 469 31.74 0.0025
2021-08-10 2021-06-30 13F BOSTON PROPERTIES COM 101121101 3,115 2,238 255.19 356 304.55 0.0020
2021-05-11 2021-03-31 13F BOSTON PROPERTIES COM 101121101 877 -29 -3.20 88 3.53 0.0006
2021-02-12 2020-12-31 13F BOSTON PROPERTIES COM 101121101 906 -548 -37.69 85 -26.72 0.0006
2020-11-13 2020-09-30 13F BOSTON PROPERTIES COM 101121101 1,454 1,150 378.29 116 329.63 0.0011
2020-08-12 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 304 1 0.33 27 -3.57 0.0003
2020-05-12 2020-03-31 13F BOSTON PROPERTIES COM 101121101 303 2 0.66 28 -31.71 0.0004
2020-02-07 2019-12-31 13F BOSTON PROPERTIES COM 101121101 301 15 5.24 41 10.81 0.0005
2019-11-12 2019-09-30 13F BOSTON PROPERTIES COM 101121101 286 200 232.56 37 236.36 0.0005
2019-08-09 2019-06-30 13F BOSTON PROPERTIES COM 101121101 86 -337 -79.67 11 -80.70 0.0002
2019-05-10 2019-03-31 13F BOSTON PROPERTIES COM 101121101 423 253 148.82 57 200.00 0.0008
2019-02-12 2018-12-31 13F BOSTON PROPERTIES COM 101121101 170 170 19 0.0003
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.