Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionOppenheimer Asset Management Inc.
Latest Disclosed Ownership25,898 shares
Latest Disclosed Value $ 1,344,106
Oppenheimer Asset Management Inc. reports 28.51% increase in ownership of BXP / Boston Properties, Inc.

On April 23, 2026 - Oppenheimer Asset Management Inc. filed a 13F-HR form disclosing ownership of 25,898 shares of Boston Properties, Inc. (US:BXP) valued at $1,344,106 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 20,152 shares of Boston Properties, Inc.. This represents a change in shares of 28.51% during the quarter. The current value of the position is $1,614,222 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)
2026-04-23 2026-03-31 13F BXP COM 101121101 25,898 5,746 28.51 1,344 -1.10 0.0038
2026-02-02 2025-12-31 13F BXP COM 101121101 20,152 751 3.87 1,360 -5.76 0.0167
2025-11-06 2025-09-30 13F BXP COM 101121101 19,401 6,789 53.83 1,442 69.65 0.0159
2025-07-31 2025-06-30 13F BXP COM 101121101 12,612 6,666 112.11 851 113.03 0.0098
2025-04-23 2025-03-31 13F BXP COM 101121101 5,946 324 5.76 400 -4.55 0.0050
2025-02-05 2024-12-31 13F BXP COM 101121101 5,622 -1,245 -18.13 418 -24.28 0.0051
2024-11-05 2024-09-30 13F BXP COM 101121101 6,867 -854 -11.06 553 16.21 0.0067
2024-08-08 2024-06-30 13F BOSTON PROPERTIES COM 101121101 7,721 2,513 48.25 475 39.71 0.0061
2024-05-07 2024-03-31 13F BOSTON PROPERTIES COM 101121101 5,208 -239 -4.39 340 -10.99 0.0050
2024-02-13 2023-12-31 13F BOSTON PROPERTIES COM 101121101 5,447 -71,693 -92.94 382 -91.67 0.0053
2023-11-08 2023-09-30 13F BOSTON PROPERTIES COM 101121101 77,140 -1,073 -1.37 4,588 1.87 0.0704
2023-08-03 2023-06-30 13F BOSTON PROPERTIES COM 101121101 78,213 -531 -0.67 4,504 5.70 0.0663
2023-05-10 2023-03-31 13F BOSTON PROPERTIES COM 101121101 78,744 9,327 13.44 4,262 -9.17 0.0656
2023-02-07 2022-12-31 13F BOSTON PROPERTIES COM 101121101 69,417 -10,932 -13.61 4,691 -22.12 0.0755
2022-11-14 2022-09-30 13F BOSTON PROPERTIES COM 101121101 80,349 -2,293 -2.77 6,023 -18.10 0.1062
2022-08-08 2022-06-30 13F BOSTON PROPERTIES COM 101121101 82,642 -118 -0.14 7,354 -31.01 0.1232
2022-05-12 2022-03-31 13F BOSTON PROPERTIES COM 101121101 82,760 77,504 1,474.58 10,659 1,661.82 0.1513
2022-02-02 2021-12-31 13F BOSTON PROPERTIES COM 101121101 5,256 -308 -5.54 605 0.33 0.0080
2021-11-12 2021-09-30 13F BOSTON PROPERTIES COM 101121101 5,564 -623 -10.07 603 -14.95 0.0086
2021-08-03 2021-06-30 13F BOSTON PROPERTIES COM 101121101 6,187 -224 -3.49 709 9.08 0.0101
2021-05-17 2021-03-31 13F BOSTON PROPERTIES COM 101121101 6,411 -575 -8.23 650 -1.52 0.0101
2021-02-11 2020-12-31 13F BOSTON PROPERTIES COM 101121101 6,986 307 4.60 660 23.13 0.0110
2020-11-13 2020-09-30 13F BOSTON PROPERTIES COM 101121101 6,679 -493 -6.87 536 -17.28 0.0104
2020-08-11 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 7,172 698 10.78 648 8.54 0.0134
2020-05-08 2020-03-31 13F BOSTON PROPERTIES COM 101121101 6,474 1,200 22.75 597 -17.88 0.0147
2020-02-07 2019-12-31 13F BOSTON PROPERTIES COM 101121101 5,274 -231 -4.20 727 1.96 0.0154
2019-10-31 2019-09-30 13F BOSTON PROPERTIES COM 101121101 5,505 -814 -12.88 713 -12.62 0.0158
2019-08-09 2019-06-30 13F BOSTON PROPERTIES COM 101121101 6,319 -978 -13.40 816 -16.39 0.0180
2019-04-24 2019-03-31 13F BOSTON PROPERTIES COM 101121101 7,297 -6,272 -46.22 976 -36.13 0.0219
2019-01-30 2018-12-31 13F BOSTON PROPERTIES COM 101121101 13,569 107 0.79 1,528 -7.79 0.0379
2018-10-26 2018-09-30 13F BOSTON PROPERTIES COM 101121101 13,462 168 1.26 1,657 -0.66 0.0367
2018-08-10 2018-06-30 13F BOSTON PROPERTIES COM 101121101 13,294 2,313 21.06 1,668 23.37 0.0408
2018-05-09 2018-03-31 13F BOSTON PROPERTIES COM 101121101 10,981 -2,995 -21.43 1,352 -21.30 0.0339
2018-02-07 2017-12-31 13F BOSTON PROPERTIES COM 101121101 13,976 0 0.00 1,718 0.00 0.0456
2017-11-14 2017-09-30 13F BOSTON PROPERTIES COM 101121101 13,976 984 7.57 1,718 7.51 0.0446
2017-08-09 2017-06-30 13F BOSTON PROPERTIES COM 101121101 12,992 4,741 57.46 1,598 46.20 0.0441
2017-05-15 2017-03-31 13F BOSTON PROPERTIES COM 101121101 8,251 8,251 1,093 0.0311
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.