波士頓地產公司
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership2,374,823 shares
Latest Disclosed Value $ 123,253,315
Northern Trust Corp reports 27.71% decrease in ownership of BXP / Boston Properties, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 2,374,823 shares of Boston Properties, Inc. (US:BXP) valued at $123,253,314 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 3,284,970 shares of Boston Properties, Inc.. This represents a change in shares of -27.71% during the quarter. The current value of the position is $148,022,718 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 2,374,823 -910,147 -27.71 123,253 -44.40 0.0033
2026-02-17 2025-12-31 13F BXP COM 101121101 3,284,970 -126,807 -3.72 221,670 -12.60 0.0283
2025-11-14 2025-09-30 13F BXP COM 101121101 3,411,777 127,948 3.90 253,632 14.48 0.0324
2025-08-13 2025-06-30 13F BXP COM 101121101 3,283,829 -885,631 -21.24 221,560 -20.91 0.0305
2025-05-13 2025-03-31 13F BXP COM 101121101 4,169,460 891,276 27.19 280,146 14.92 0.0416
2025-02-14 2024-12-31 13F BXP COM 101121101 3,278,184 1,492,427 83.57 243,766 69.66 0.0345
2024-11-13 2024-09-30 13F BXP COM 101121101 1,785,757 -97,220 -5.16 143,682 23.95 0.0235
2024-08-14 2024-06-30 13F BOSTON PROPERTIES COM 101121101 1,882,977 6,057 0.32 115,916 -5.44 0.0195
2024-05-14 2024-03-31 13F BOSTON PROPERTIES COM 101121101 1,876,920 25,109 1.36 122,582 -5.66 0.0212
2024-02-13 2023-12-31 13F BOSTON PROPERTIES COM 101121101 1,851,811 -928,998 -33.41 129,942 -21.44 0.0235
2023-11-13 2023-09-30 13F BOSTON PROPERTIES COM 101121101 2,780,809 243,246 9.59 165,403 13.18 0.0320
2023-08-11 2023-06-30 13F BOSTON PROPERTIES COM 101121101 2,537,563 -367,711 -12.66 146,138 -7.06 0.0281
2023-05-15 2023-03-31 13F BOSTON PROPERTIES COM 101121101 2,905,274 437,158 17.71 157,233 -5.73 0.0312
2023-02-13 2022-12-31 13F BOSTON PROPERTIES COM 101121101 2,468,116 168,305 7.32 166,795 -3.26 0.0350
2022-11-14 2022-09-30 13F BOSTON PROPERTIES COM 101121101 2,299,811 57,672 2.57 172,417 -13.58 0.0394
2022-08-12 2022-06-30 13F BOSTON PROPERTIES COM 101121101 2,242,139 -123,426 -5.22 199,505 -34.52 0.0427
2022-05-13 2022-03-31 13F BOSTON PROPERTIES COM 101121101 2,365,565 -64,654 -2.66 304,684 8.85 0.0536
2022-02-08 2021-12-31 13F BOSTON PROPERTIES COM 101121101 2,430,219 -127,077 -4.97 279,913 1.02 0.0459
2021-11-15 2021-09-30 13F BOSTON PROPERTIES COM 101121101 2,557,296 -31,001 -1.20 277,083 -6.58 0.0490
2021-08-13 2021-06-30 13F BOSTON PROPERTIES COM 101121101 2,588,297 -86,991 -3.25 296,593 9.48 0.0522
2021-05-12 2021-03-31 13F BOSTON PROPERTIES COM 101121101 2,675,288 -114,298 -4.10 270,899 2.73 0.0504
2021-02-11 2020-12-31 13F BOSTON PROPERTIES COM 101121101 2,789,586 -133,777 -4.58 263,699 12.33 0.0514
2020-11-16 2020-09-30 13F BOSTON PROPERTIES COM 101121101 2,923,363 152,503 5.50 234,746 -6.26 0.0515
2020-08-14 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 2,770,860 34,289 1.25 250,430 -0.78 0.0593
2020-05-14 2020-03-31 13F BOSTON PROPERTIES COM 101121101 2,736,571 134,495 5.17 252,394 -29.64 0.0725
2020-02-14 2019-12-31 13F BOSTON PROPERTIES COM 101121101 2,602,076 -19,610 -0.75 358,721 5.53 0.0803
2019-11-13 2019-09-30 13F BOSTON PROPERTIES COM 101121101 2,621,686 -26,504 -1.00 339,928 -0.49 0.0814
2019-08-13 2019-06-30 13F BOSTON PROPERTIES COM 101121101 2,648,190 45,390 1.74 341,616 -1.96 0.0810
2019-05-13 2019-03-31 13F BOSTON PROPERTIES COM 101121101 2,602,800 29,927 1.16 348,463 20.34 0.0861
2019-02-12 2018-12-31 13F BOSTON PROPERTIES COM 101121101 2,572,873 102,918 4.17 289,577 -4.75 0.0812
2018-11-14 2018-09-30 13F BOSTON PROPERTIES COM 101121101 2,469,955 -98,746 -3.84 304,027 -5.63 0.0744
2018-09-18 2018-06-30 13F/A-1 BOSTON PROPERTIES COM 101121101 2,568,701 -60,842 -2.31 322,166 -0.57 0.0818
2018-08-14 2018-06-30 13F BOSTON PROPERTIES COM 101121101 2,578,789 -50,754 323,431
2018-05-09 2018-03-31 13F BOSTON PROPERTIES COM 101121101 2,629,543 64,847 2.53 324,012 -2.84 0.0843
2018-02-14 2017-12-31 13F BOSTON PROPERTIES COM 101121101 2,564,696 91,005 3.68 333,488 9.71 0.0845
2017-11-13 2017-09-30 13F BOSTON PROPERTIES COM 101121101 2,473,691 72,191 3.01 303,967 2.89 0.0792
2017-08-11 2017-06-30 13F BOSTON PROPERTIES COM 101121101 2,401,500 23,724 1.00 295,432 -6.16 0.0826
2017-05-12 2017-03-31 13F BOSTON PROPERTIES COM 101121101 2,377,776 52,012 2.24 314,841 7.63 0.0908
2017-02-13 2016-12-31 13F BOSTON PROPERTIES COM 101121101 2,325,764 -43,383 -1.83 292,534 -9.40 0.0897
2016-11-09 2016-09-30 13F BOSTON PROPERTIES COM 101121101 2,369,147 30,830 1.32 322,892 4.69 0.1006
2016-08-12 2016-06-30 13F BOSTON PROPERTIES COM 101121101 2,338,317 66,286 2.92 308,424 7.27 0.1001
2016-08-19 2016-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 2,272,031 25,045 1.11 287,519 0.33 0.0954
2016-05-13 2016-03-31 13F Boston Properties In REIT 101121101 2,272,023 288,728
2016-02-12 2015-12-31 13F Boston Properties In REIT 101121101 2,246,986 -88,281 -3.78 286,581 3.65 0.0950
2015-11-12 2015-09-30 13F BOSTON PROPERTIES COM 101121101 2,335,267 116,612 5.26 276,496 2.96 0.0923
2015-08-13 2015-06-30 13F BOSTON PROPERTIES COM 101121101 2,218,655 -269,702 -10.84 268,546 -23.18 0.1820
2015-08-13 2015-06-30 13F Boston Properties In REIT 010112110 211,313 -2,277,044 25,577 0.0173
2015-05-14 2015-03-31 13F Boston Properties In REIT 101121101 2,488,357 100,928 4.23 349,563 13.78 0.1051
2015-02-12 2014-12-31 13F Boston Properties In REIT 101121101 2,387,429 123,351 5.45 307,238 17.23 0.0928
2014-11-13 2014-09-30 13F Boston Properties In REIT 101121101 2,264,078 -34,230 -1.49 262,090 -3.51 0.0823
2014-08-14 2014-06-30 13F BOSTON PROPERTIES com 101121101 2,298,308 4,090 0.18 271,614 3.37 0.0847
2014-05-14 2014-03-31 13F BOSTON PROPERTIES REIT 101121101 2,294,218 -91,935 -3.85 262,757 9.71 0.0827
2014-02-21 2013-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 2,386,153 60,660 2.61 239,498 -3.66 0.0768
2014-02-12 2013-12-31 13F BOSTON PROPERTIES COM 101121101 2,386,153 239,498
2013-11-13 2013-09-30 13F BOSTON PROPERTIES COM 101121101 2,325,493 -61,314 -2.57 248,595 -1.25 0.0876
2013-08-09 2013-06-30 13F BOSTON PROPERTIES COM 101121101 2,386,807 2,386,807 251,737 0.0912
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.