Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership12,135,782 shares
Ownership 7.73%
State Street Corp ownership in BXP / Boston Properties, Inc.

2024-01-30 - State Street Corp has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 12,135,782 shares of Boston Properties, Inc. (US:BXP). This represents 7.73 percent ownership of the company. In their previous filing dated 2023-02-06 , State Street Corp had reported owning 11,123,759 shares, indicating an increase of 9.10 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2024-01-30 2024-01-30 13G/A 11,123,759 12,135,782 9.10 7.73 8.87
2023-02-06 2023-02-06 13G/A 10,427,686 11,123,759 6.68 7.10 6.29
2022-02-10 2022-02-10 13G/A 8,745,065 10,427,686 19.24 6.68 18.86
2021-02-05 2021-02-05 13G 9,721,252 8,745,065 -10.04 5.62 -10.65
2020-02-13 2020-02-13 13G 8,711,108 9,721,252 11.60 6.29 12.32
2019-02-13 2019-02-13 13G 8,652,221 8,711,108 0.68 5.60 -0.18
2018-02-14 2018-02-14 13G 8,887,364 8,652,221 -2.65 5.61 -2.94
2017-02-09 2017-02-09 13G 8,830,494 8,887,364 0.64 5.78 -0.34
2016-02-12 2016-02-12 13G 8,830,494 5.80
2014-02-05 2014-02-05 13G 6,739,916 4.40
2013-02-11 2013-02-11 13G 8,026,260 5.30

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-15 2026-03-31 13F BXP COM 101121101 9,890,068 -1,379,592 -12.24 520,148 -32.29 0.0180
2026-02-13 2025-12-31 13F BXP COM 101121101 11,269,660 -32,458 -0.29 768,226 -9.42 0.0258
2025-11-14 2025-09-30 13F BXP COM 101121101 11,302,118 -131,650 -1.15 848,087 8.40 0.0294
2025-08-14 2025-06-30 13F BXP COM 101121101 11,433,768 186,269 1.66 782,337 2.07 0.0293
2025-05-15 2025-03-31 13F BXP COM 101121101 11,247,499 -13,614 -0.12 766,477 -9.65 0.0316
2025-02-14 2024-12-31 13F BXP COM 101121101 11,261,113 -44,205 -0.39 848,333 -7.84 0.0335
2024-11-14 2024-09-30 13F BXP COM 101121101 11,305,318 386,032 3.54 920,543 34.80 0.0375
2024-08-14 2024-06-30 13F BOSTON PROPERTIES COM 101121101 10,919,286 -393,943 -3.48 682,896 -8.87 0.0298
2024-05-15 2024-03-31 13F BOSTON PROPERTIES COM 101121101 11,313,229 -798,339 -6.59 749,404 -13.02 0.0335
2024-02-14 2023-12-31 13F BOSTON PROPERTIES COM 101121101 12,111,568 390,022 3.33 861,545 21.65 0.0419
2023-11-14 2023-09-30 13F BOSTON PROPERTIES COM 101121101 11,721,546 -43,785 -0.37 708,235 2.83 0.0393
2023-08-14 2023-06-30 13F BOSTON PROPERTIES COM 101121101 11,765,331 151,276 1.30 688,767 7.68 0.0362
2023-05-15 2023-03-31 13F BOSTON PROPERTIES COM 101121101 11,614,055 528,634 4.77 639,628 -15.83 0.0361
2023-05-15 2022-12-31 13F/A-99 BOSTON PROPERTIES COM 101121101 11,085,421 14,273 0.13 759,920 -9.57 0.0447
2023-05-15 2022-12-31 13F BOSTON PROPERTIES COM 101121101 11,085,421 14,273 759,920 0.0447
2022-11-15 2022-09-30 13F BOSTON PROPERTIES COM 101121101 11,071,148 47,386 0.43 840,326 -15.23 0.0532
2022-08-15 2022-06-30 13F BOSTON PROPERTIES COM 101121101 11,023,762 -2,917 -0.03 991,330 -30.71 0.0594
2022-05-16 2022-03-31 13F BOSTON PROPERTIES COM 101121101 11,026,679 638,452 6.15 1,430,779 18.59 0.0708
2022-02-14 2021-12-31 13F BOSTON PROPERTIES COM 101121101 10,388,227 754,483 7.83 1,206,521 14.57 0.0572
2021-11-15 2021-09-30 13F BOSTON PROPERTIES COM 101121101 9,633,744 210,679 2.24 1,053,125 -3.28 0.0557
2021-08-16 2021-06-30 13F BOSTON PROPERTIES COM 101121101 9,423,065 312,160 3.43 1,088,868 16.92 0.0574
2021-07-09 2021-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 9,110,905 374,220 4.28 931,267 11.61 0.0534
2021-05-17 2021-03-31 13F BOSTON PROPERTIES COM 101121101 9,110,905 374,220 931,267 0.0534
2021-02-16 2020-12-31 13F BOSTON PROPERTIES COM 101121101 8,736,685 -144,991 -1.63 834,357 15.61 0.0511
2020-11-10 2020-09-30 13F BOSTON PROPERTIES COM 101121101 8,881,676 -493,756 -5.27 721,699 -15.73 0.0493
2020-08-14 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 9,375,432 -349,697 -3.60 856,440 -5.49 0.0623
2020-06-19 2020-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 9,725,129 4,775 0.05 906,168 -32.85 0.0793
2020-05-11 2020-03-31 13F BOSTON PROPERTIES COM 101121101 9,725,129 4,775 906,168 79,579.7963
2020-02-06 2019-12-31 13F BOSTON PROPERTIES COM 101121101 9,720,354 -757,046 -7.23 1,349,514 -1.38 0.0924
2019-11-14 2019-09-30 13F BOSTON PROPERTIES COM 101121101 10,477,400 -205,592 -1.92 1,368,393 -1.42 0.1020
2019-08-14 2019-06-30 13F BOSTON PROPERTIES COM 101121101 10,682,992 591,193 5.86 1,388,104 2.02 0.1035
2019-05-15 2019-03-31 13F BOSTON PROPERTIES COM 101121101 10,091,799 1,382,030 15.87 1,360,591 37.64 0.1062
2019-02-12 2018-12-31 13F BOSTON PROPERTIES COM 101121101 8,709,769 9,679 0.11 988,514 -7.69 0.0900
2018-11-09 2018-09-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,700,090 279,325 3.32 1,070,893 1.40 0.0822
2018-08-14 2018-06-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,420,765 -129,605 -1.52 1,056,148 0.24 0.0883
2018-05-15 2018-03-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,550,370 -100,581 -1.16 1,053,582 -6.34 0.0895
2018-02-14 2017-12-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,650,951 39,510 0.46 1,124,871 6.30 0.0905
2017-11-14 2017-09-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,611,441 -146,160 -1.67 1,058,164 -1.78 0.0913
2017-08-14 2017-06-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,757,601 -83,217 -0.94 1,077,358 -7.97 0.0953
2017-05-15 2017-03-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,840,818 -45,018 -0.51 1,170,622 4.74 0.1044
2017-02-09 2016-12-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,885,836 -155,387 -1.72 1,117,657 -9.30 0.1052
2017-01-13 2016-09-30 13F/A-1 BOSTON PROPERTIES Real Estate Investment Trust 101121101 9,041,223 383,945 4.43 1,232,239 7.91 0.1242
2016-11-14 2016-09-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 7,401,317 1,008,737
2016-08-12 2016-06-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,657,278 -145,975 -1.66 1,141,897 2.07 0.1227
2016-05-20 2016-03-31 13F/A-1 BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,803,253 -27,241 -0.31 1,118,710 -0.67 0.1210
2016-05-12 2016-03-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,803,253 1,118,710
2016-02-16 2015-12-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,830,494 96,377 1.10 1,126,251 8.91 0.1231
2015-11-16 2015-09-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,734,117 -90,441 -1.02 1,034,130 -3.18 0.1204
2015-08-13 2015-06-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 8,824,558 2,092,203 31.08 1,068,143 12.94 0.1142
2015-05-15 2015-03-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,732,355 -426,624 -5.96 945,750 2.65 0.0971
2015-02-11 2014-12-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 7,158,979 278,215 4.04 921,290 15.67 0.0918
2014-11-12 2014-09-30 13F/A-1 BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,880,764 74,043 1.09 796,514 -0.98 0.0857
2014-11-10 2014-09-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,880,764 796,514
2014-08-12 2014-06-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,806,721 193,689 2.93 804,420 6.21 0.0869
2014-05-15 2014-03-31 13F/A-1 BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,613,032 -126,884 -1.88 757,402 11.96 0.0861
2014-05-13 2014-03-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,613,032 757,402
2014-02-06 2013-12-31 13F/A-1 BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,739,916 208,641 3.19 676,469 -3.11 0.0753
2014-02-06 2013-12-31 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,267,930 663,211
2013-11-12 2013-09-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,531,275 75,537 1.17 698,194 2.54 0.0860
2013-08-08 2013-06-30 13F BOSTON PROPERTIES Real Estate Investment Trust 101121101 6,455,738 6,455,738 680,885 0.0888
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.