波士頓地產公司
MX ˙ BMV ˙ US1011211018
SecurityMX:BXP / Boston Properties, Inc.
InstitutionProShare Advisors LLC
Latest Disclosed Ownership27,947 shares
Latest Disclosed Value $ 1,450,451
ProShare Advisors LLC reports 17.16% decrease in ownership of BXP / Boston Properties, Inc.

On April 24, 2026 - ProShare Advisors LLC filed a 13F-HR form disclosing ownership of 27,947 shares of Boston Properties, Inc. (MX:BXP) valued at $1,450,451 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 33,737 shares of Boston Properties, Inc.. This represents a change in shares of -17.16% during the quarter.

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)
2026-04-24 2026-03-31 13F BXP COM 101121101 27,947 -5,790 -17.16 1,450 -36.29 0.0021
2026-02-06 2025-12-31 13F BXP COM 101121101 33,737 2,187 6.93 2,277 -2.94 0.0040
2025-11-06 2025-09-30 13F BXP COM 101121101 31,550 1,494 4.97 2,345 15.69 0.0049
2025-08-07 2025-06-30 13F BXP COM 101121101 30,056 2,228 8.01 2,028 8.45 0.0040
2025-05-08 2025-03-31 13F BXP COM 101121101 27,828 1,350 5.10 1,870 -5.03 0.0042
2025-02-14 2024-12-31 13F BXP COM 101121101 26,478 1,818 7.37 1,969 -0.81 0.0045
2024-11-14 2024-09-30 13F BXP COM 101121101 24,660 -860 -3.37 1,984 26.29 0.0049
2024-08-13 2024-06-30 13F BOSTON PROPERTIES COM 101121101 25,520 1,403 5.82 1,571 -0.25 0.0042
2024-05-08 2024-03-31 13F BOSTON PROPERTIES COM 101121101 24,117 -407 -1.66 1,575 -8.43 0.0042
2024-02-14 2023-12-31 13F BOSTON PROPERTIES COM 101121101 24,524 -2,197 -8.22 1,721 8.24 0.0053
2023-11-13 2023-09-30 13F BOSTON PROPERTIES COM 101121101 26,721 -17,396 -39.43 1,589 -37.44 0.0050
2023-08-10 2023-06-30 13F BOSTON PROPERTIES COM 101121101 44,117 -1,964 -4.26 2,541 1.89 0.0074
2023-05-26 2023-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 46,081 -10,095 -17.97 2,494 -34.33 0.0076
2023-05-12 2023-03-31 13F BOSTON PROPERTIES COM 101121101 46,081 -10,095 2,494 0.0079
2023-02-02 2022-12-31 13F BOSTON PROPERTIES COM 101121101 56,176 5,304 10.43 3,796 -0.45 0.0133
2022-11-07 2022-09-30 13F BOSTON PROPERTIES COM 101121101 50,872 9,709 23.59 3,813 4.10 0.0146
2022-08-01 2022-06-30 13F BOSTON PROPERTIES COM 101121101 41,163 -7,824 -15.97 3,663 -41.93 0.0121
2022-05-10 2022-03-31 13F BOSTON PROPERTIES COM 101121101 48,987 -1,851 -3.64 6,308 7.74 0.0136
2022-02-08 2021-12-31 13F BOSTON PROPERTIES COM 101121101 50,838 8,902 21.23 5,855 28.85 0.0115
2021-11-12 2021-09-30 13F BOSTON PROPERTIES COM 101121101 41,936 1,462 3.61 4,544 -2.03 0.0128
2021-08-13 2021-06-30 13F BOSTON PROPERTIES COM 101121101 40,474 2,915 7.76 4,638 21.96 0.0136
2021-05-14 2021-03-31 13F BOSTON PROPERTIES COM 101121101 37,559 -2,691 -6.69 3,803 -0.05 0.0120
2021-02-09 2020-12-31 13F BOSTON PROPERTIES COM 101121101 40,250 7,681 23.58 3,805 45.51 0.0142
2020-11-13 2020-09-30 13F BOSTON PROPERTIES COM 101121101 32,569 -656 -1.97 2,615 -12.92 0.0121
2020-08-03 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 33,225 4,454 15.48 3,003 13.15 0.0160
2020-05-15 2020-03-31 13F BOSTON PROPERTIES COM 101121101 28,771 -21,964 -43.29 2,654 -62.05 0.0191
2020-02-12 2019-12-31 13F BOSTON PROPERTIES COM 101121101 50,735 -7,992 -13.61 6,994 -8.15 0.0324
2019-11-12 2019-09-30 13F BOSTON PROPERTIES COM 101121101 58,727 -748 -1.26 7,615 -0.74 0.0426
2019-08-13 2019-06-30 13F BOSTON PROPERTIES COM 101121101 59,475 -2,758 -4.43 7,672 -7.92 0.0459
2019-05-15 2019-03-31 13F BOSTON PROPERTIES COM 101121101 62,233 502 0.81 8,332 19.92 0.0499
2019-02-14 2018-12-31 13F BOSTON PROPERTIES COM 101121101 61,731 9,912 19.13 6,948 8.94 0.0486
2018-11-14 2018-09-30 13F BOSTON PROPERTIES COM 101121101 51,819 -6,624 -11.33 6,378 -12.99 0.0433
2018-08-13 2018-06-30 13F BOSTON PROPERTIES COM 101121101 58,443 -2,778 -4.54 7,330 -2.84 0.0491
2018-05-14 2018-03-31 13F BOSTON PROPERTIES COM 101121101 61,221 84 0.14 7,544 -5.11 0.0491
2018-02-14 2017-12-31 13F BOSTON PROPERTIES COM 101121101 61,137 11,390 22.90 7,950 30.05 0.0551
2017-11-13 2017-09-30 13F BOSTON PROPERTIES COM 101121101 49,747 -2,888 -5.49 6,113 -5.59 0.0562
2017-08-11 2017-06-30 13F BOSTON PROPERTIES COM 101121101 52,635 -1,551 -2.86 6,475 -9.76 0.0645
2017-05-12 2017-03-31 13F/A-2 BOSTON PROPERTIES COM 101121101 54,186 473 0.88 7,175 6.20 0.0750
2017-05-08 2017-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 400 -53,786 7,175 0.0750
2017-04-25 2017-03-31 13F BOSTON PROPERTIES COM 101121101 400 7,175
2017-02-13 2016-12-31 13F BOSTON PROPERTIES COM 101121101 53,713 9,248 20.80 6,756 11.49 0.0748
2016-11-10 2016-09-30 13F BOSTON PROPERTIES COM 101121101 44,465 -9,041 -16.90 6,060 -14.13 0.0846
2016-08-12 2016-06-30 13F BOSTON PROPERTIES COM 101121101 53,506 -6,254 -10.47 7,057 -7.07 0.0909
2016-05-06 2016-03-31 13F BOSTON PROPERTIES COM 101121101 59,760 -17,522 -22.67 7,594 -22.96 0.1045
2016-02-05 2015-12-31 13F BOSTON PROPERTIES COM 101121101 77,282 7,689 11.05 9,857 19.62 0.1194
2015-11-06 2015-09-30 13F BOSTON PROPERTIES COM 101121101 69,593 -4,697 -6.32 8,240 -8.36 0.1157
2015-08-11 2015-06-30 13F BOSTON PROPERTIES COM 101121101 74,290 -10,173 -12.04 8,992 -24.21 0.1244
2015-05-08 2015-03-31 13F BOSTON PROPERTIES COM 101121101 84,463 84,463 0.00 11,865 0.1398
2015-01-30 2014-12-31 13F BOSTON PROPERTIES COM 101121101 0 -96,481 -100.00 0 -100.00
2014-11-06 2014-09-30 13F BOSTON PROPERTIES COM 101121101 96,481 -13,318 -12.13 11,169 -13.93 0.1481
2014-08-08 2014-06-30 13F BOSTON PROPERTIES COM 101121101 109,799 -4,934 -4.30 12,976 -1.25 0.1681
2014-05-07 2014-03-31 13F BOSTON PROPERTIES COM 101121101 114,733 661 0.58 13,140 14.77 0.1643
2014-02-04 2013-12-31 13F BOSTON PROPERTIES COM 101121101 114,072 5,948 5.50 11,449 -0.94 0.1706
2013-11-07 2013-09-30 13F BOSTON PROPERTIES COM 101121101 108,124 -14,800 -12.04 11,558 -10.85 0.2743
2013-07-25 2013-06-30 13F BOSTON PROPERTIES COM 101121101 122,924 122,924 12,965 0.2545
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.