Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionBessemer Group Inc
Latest Disclosed Ownership47,902 shares
Latest Disclosed Value $ 2,486
Bessemer Group Inc reports 1.45% decrease in ownership of BXP / Boston Properties, Inc.

On May 6, 2026 - Bessemer Group Inc filed a 13F-HR form disclosing ownership of 47,902 shares of Boston Properties, Inc. (US:BXP) valued at $2,486,114 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 48,609 shares of Boston Properties, Inc.. This represents a change in shares of -1.45% during the quarter. The current value of the position is $2,985,732 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)
2026-05-06 2026-03-31 13F BXP SC 101121101 47,902 -707 -1.45 2 -33.33 0.0039
2026-02-05 2025-12-31 13F BXP SC 101121101 48,609 44,055 967.39 3 0.0050
2025-11-05 2025-09-30 13F BXP SC 101121101 4,554 -463 -9.23 0 0.0005
2025-08-01 2025-06-30 13F BXP SC 101121101 5,017 -612 -10.87 0 0.0006
2025-04-23 2025-03-31 13F BXP SC 101121101 5,629 -19,646 -77.73 0 -100.00 0.0007
2025-02-13 2024-12-31 13F BXP SC 101121101 25,275 -321 -1.25 2 -50.00 0.0031
2024-11-12 2024-09-30 13F BXP SC 101121101 25,596 1,004 4.08 2 100.00 0.0034
2024-08-13 2024-06-30 13F BOSTON PROPERTIES SC 101121101 24,592 -636 -2.52 2 0.00 0.0027
2024-08-13 2024-03-31 13F/A-1 BOSTON PROPERTIES SC 101121101 25,228 19,957 378.62 2 0.0030
2024-05-13 2024-03-31 13F BOSTON PROPERTIES SC 101121101 25,228 19,957 2 0.0030
2024-02-09 2023-12-31 13F BOSTON PROPERTIES SC 101121101 5,271 -66 -1.24 0 0.0007
2023-11-13 2023-09-30 13F BOSTON PROPERTIES SC 101121101 5,337 448 9.16 0 0.0007
2023-08-10 2023-06-30 13F BOSTON PROPERTIES SC 101121101 4,889 2,086 74.42 0 0.0006
2023-05-10 2023-03-31 13F BOSTON PROPERTIES SC 101121101 2,803 1,873 201.40 0 0.0004
2023-02-13 2022-12-31 13F BOSTON PROPERTIES SC 101121101 930 -3 -0.32 0 -100.00 0.0002
2022-11-09 2022-09-30 13F BOSTON PROPERTIES SC 101121101 933 469 101.08 70 70.73 0.0002
2022-08-10 2022-06-30 13F BOSTON PROPERTIES SC 101121101 464 -200 -30.12 41 -51.76 0.0001
2022-05-12 2022-03-31 13F BOSTON PROPERTIES SC 101121101 664 30 4.73 85 16.44 0.0002
2022-01-27 2021-12-31 13F BOSTON PROPERTIES SC 101121101 634 44 7.46 73 14.06 0.0001
2021-11-12 2021-09-30 13F BOSTON PROPERTIES SC 101121101 590 72 13.90 64 8.47 0.0001
2021-08-06 2021-06-30 13F BOSTON PROPERTIES SC 101121101 518 83 19.08 59 34.09 0.0001
2021-05-13 2021-03-31 13F BOSTON PROPERTIES SC 101121101 435 220 102.33 44 120.00 0.0001
2021-02-09 2020-12-31 13F BOSTON PROPERTIES SC 101121101 215 -236 -52.33 20 -44.44 0.0001
2020-11-12 2020-09-30 13F BOSTON PROPERTIES SC 101121101 451 -35 -7.20 36 -18.18 0.0001
2020-08-05 2020-06-30 13F BOSTON PROPERTIES SC 101121101 486 149 44.21 44 41.94 0.0001
2020-04-30 2020-03-31 13F BOSTON PROPERTIES SC 101121101 337 181 116.03 31 40.91 0.0001
2020-02-04 2019-12-31 13F BOSTON PROPERTIES SC 101121101 156 0 0.00 22 10.00 0.0001
2019-11-07 2019-09-30 13F BOSTON PROPERTIES SC 101121101 156 -844 -84.40 20 -84.50 0.0001
2019-07-19 2019-06-30 13F BOSTON PROPERTIES SC 101121101 1,000 456 83.82 129 79.17 0.0004
2019-05-13 2019-03-31 13F BOSTON PROPERTIES SC 101121101 544 363 200.55 72 260.00 0.0003
2019-05-21 2018-12-31 13F/A-1 BOSTON PROPERTIES SC 101121101 181 29 19.08 20 11.11 0.0001
2019-02-12 2018-12-31 13F BOSTON PROPERTIES SC 101121101 181 29 20 0.0001
2018-11-06 2018-09-30 13F BOSTON PROPERTIES SC 101121101 152 52 52.00 18 38.46 0.0001
2018-07-25 2018-06-30 13F BOSTON PROPERTIES SC 101121101 100 0 0.00 13 8.33 0.0001
2018-05-10 2018-03-31 13F BOSTON PROPERTIES SC 101121101 100 -28 -21.88 12 -29.41 0.0000
2018-01-30 2017-12-31 13F BOSTON PROPERTIES SC 101121101 128 0 0.00 17 13.33 0.0001
2017-11-03 2017-09-30 13F BOSTON PROPERTIES SC 101121101 128 28 28.00 15 25.00 0.0001
2017-07-27 2017-06-30 13F BOSTON PROPERTIES SC 101121101 100 0 0.00 12 -7.69 0.0000
2017-05-12 2017-03-31 13F BOSTON PROPERTIES SC 101121101 100 0 0.00 13 0.00 0.0001
2017-02-07 2016-12-31 13F BOSTON PROPERTIES SC 101121101 100 -10 -9.09 13 -13.33 0.0001
2016-11-10 2016-09-30 13F BOSTON PROPERTIES SC 101121101 110 110 0.00 15 0.0001
2016-05-11 2016-03-31 13F BOSTON PROPERTIES SC 101121101 0 -3,490 -100.00 0 -100.00
2016-02-12 2015-12-31 13F BOSTON PROPERTIES SC 101121101 3,490 2,553 272.47 445 300.90 0.0025
2015-11-16 2015-09-30 13F BOSTON PROPERTIES SC 101121101 937 722 335.81 111 326.92 0.0006
2015-08-14 2015-06-30 13F BOSTON PROPERTIES SC 101121101 215 45 26.47 26 8.33 0.0001
2015-06-18 2015-03-31 13F/A-1 BOSTON PROPERTIES SC 101121101 170 26 18.06 24 26.32 0.0001
2015-05-14 2015-03-31 13F BOSTON PROPERTIES SC 101121101 170 24
2015-02-17 2014-12-31 13F BOSTON PROPERTIES SC 101121101 144 0 0.00 19 11.76 0.0001
2014-12-11 2014-09-30 13F/A-1 BOSTON PROPERTIES SC 101121101 144 -28 -16.28 17 -15.00 0.0001
2014-11-13 2014-09-30 13F BOSTON PROPERTIES SC 101121101 144 -28 17 0.0001
2014-08-13 2014-06-30 13F BOSTON PROPERTIES SC 101121101 172 28 19.44 20 25.00 0.0001
2014-05-14 2014-03-31 13F BOSTON PROPERTIES SC 101121101 144 0 0.00 16 14.29 0.0001
2014-02-18 2013-12-31 13F BOSTON PROPERTIES SC 101121101 144 0 0.00 14 -6.67 0.0001
2013-11-08 2013-09-30 13F BOSTON PROPERTIES SC 101121101 144 0 0.00 15 0.00 0.0001
2013-08-14 2013-06-30 13F BOSTON PROPERTIES SC 101121101 144 144 15 0.0001
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.