Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
Institution1832 Asset Management L.P.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
1832 Asset Management L.P. closes position in BXP / Boston Properties, Inc.

On May 14, 2026 - 1832 Asset Management L.P. filed a 13F-HR form disclosing ownership of 0 shares of Boston Properties, Inc. (US:BXP) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 189,304 shares of Boston Properties, Inc.. The current value of the position is $0 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 0 -100.00 0
2026-02-13 2025-12-31 13F BXP COM 101121101 189,304 -41,203 -17.87 12,774 -25.45 0.0097
2025-11-14 2025-09-30 13F BXP COM 101121101 230,507 230,507 17,136 0.0135
2024-08-13 2024-06-30 13F BOSTON PROPERTIES COM 101121101 0 -90 -100.00 0 -100.00
2024-05-14 2024-03-31 13F BOSTON PROPERTIES COM 101121101 90 90 6 0.0000
2023-05-12 2023-03-31 13F BOSTON PROPERTIES COM 101121101 0 -71,300 -100.00 0 -100.00
2023-02-15 2022-12-31 13F BOSTON PROPERTIES COM 101121101 71,300 61,300 613.00 4,818 542.40 0.0099
2022-11-14 2022-09-30 13F BOSTON PROPERTIES COM 101121101 10,000 10,000 750 0.0016
2023-10-17 2022-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 0 -2,247 -100.00 0 -100.00
2022-05-16 2022-03-31 13F BOSTON PROPERTIES COM 101121101 0 -2,247 0
2022-02-15 2021-12-31 13F BOSTON PROPERTIES COM 101121101 2,247 -1,015 -31.12 224 -31.91 0.0004
2021-11-15 2021-09-30 13F BOSTON PROPERTIES COM 101121101 3,262 1,015 45.17 329 48.20 0.0006
2021-08-20 2021-06-30 13F/A-1 BOSTON PROPERTIES COM 101121101 2,247 -27,600 -92.47 222 -92.74 0.0004
2021-08-16 2021-06-30 13F BOSTON PROPERTIES COM 101121101 2,247 -27,600 222 0.0004
2021-05-17 2021-03-31 13F BOSTON PROPERTIES COM 101121101 29,847 26,866 901.24 3,056 1,122.40 0.0066
2021-02-16 2020-12-31 13F BOSTON PROPERTIES COM 101121101 2,981 -74,500 -96.15 250 -95.99 0.0006
2020-11-16 2020-09-30 13F BOSTON PROPERTIES COM 101121101 77,481 0 0.00 6,233 -10.48 0.0163
2020-08-14 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 77,481 27,600 55.33 6,963 50.45 0.0209
2020-05-26 2020-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 49,881 4,740 10.50 4,628 -24.82 0.0167
2020-05-14 2020-03-31 13F BOSTON PROPERTIES COM 101121101 49,141 4,000 4,558 34,463.2042
2020-02-14 2019-12-31 13F BOSTON PROPERTIES COM 101121101 45,141 879 1.99 6,156 7.43 0.0187
2019-11-14 2019-09-30 13F BOSTON PROPERTIES COM 101121101 44,262 -16,721 -27.42 5,730 -25.98 0.0182
2019-08-14 2019-06-30 13F BOSTON PROPERTIES COM 101121101 60,983 -317 -0.52 7,741 -5.91 0.0250
2019-05-15 2019-03-31 13F BOSTON PROPERTIES COM 101121101 61,300 0 0.00 8,227 19.25 0.0280
2019-02-14 2018-12-31 13F BOSTON PROPERTIES COM 101121101 61,300 0 0.00 6,899 -8.63 0.0273
2018-11-14 2018-09-30 13F BOSTON PROPERTIES COM 101121101 61,300 -3,900 -5.98 7,551 -7.63 0.0246
2018-08-14 2018-06-30 13F BOSTON PROPERTIES COM 101121101 65,200 5,215 8.69 8,175 10.07 0.0277
2018-05-15 2018-03-31 13F BOSTON PROPERTIES COM 101121101 59,985 -31,815 -34.66 7,427 -37.52 0.0274
2018-02-14 2017-12-31 13F BOSTON PROPERTIES COM 101121101 91,800 6,190 7.23 11,887 16.53 0.0386
2017-11-14 2017-09-30 13F BOSTON PROPERTIES COM 101121101 85,610 -1,190 -1.37 10,201 -4.58 0.0357
2017-08-14 2017-06-30 13F BOSTON PROPERTIES COM 101121101 86,800 5,300 6.50 10,691 -1.12 0.0484
2017-05-15 2017-03-31 13F BOSTON PROPERTIES COM 101121101 81,500 -6,500 -7.39 10,812 -2.32 0.0387
2017-04-01 2016-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 88,000 3,600 4.27 11,069 -3.76 0.0339
2017-02-14 2016-12-31 13F BOSTON PROPERTIES COM 101121101 84,400 11,238
2016-11-15 2016-09-30 13F BOSTON PROPERTIES COM 101121101 84,400 0 0.00 11,502 2.64 0.0432
2016-08-12 2016-06-30 13F/A-1 BOSTON PROPERTIES COM 101121101 84,400 -7,000 -7.66 11,206 -42.51 0.0436
2016-08-12 2016-06-30 13F BOSTON PROPERTIES COM 101121101 84,400 -7,000 18,706 0.0451
2016-05-12 2016-03-31 13F BOSTON PROPERTIES COM 101121101 91,400 -3,800 -3.99 19,492 58.70 0.0475
2016-02-12 2015-12-31 13F BOSTON PROPERTIES COM 101121101 95,200 0 0.00 12,282 8.56 0.0531
2015-11-12 2015-09-30 13F BOSTON PROPERTIES COM 101121101 95,200 11,000 13.06 11,314 11.14 0.0473
2015-08-13 2015-06-30 13F BOSTON PROPERTIES COM 101121101 84,200 5,500 6.99 10,180 -8.06 0.0345
2015-05-13 2015-03-31 13F BOSTON PROPERTIES COM 101121101 78,700 10,000 14.56 11,072 25.36 0.0416
2015-02-12 2014-12-31 13F BOSTON PROPERTIES COM 101121101 68,700 -12,500 -15.39 8,832 -6.12 0.0274
2014-11-12 2014-09-30 13F BOSTON PROPERTIES COM 101121101 81,200 23,000 39.52 9,408 36.68 0.0307
2014-08-13 2014-06-30 13F BOSTON PROPERTIES COM 101121101 58,200 -10,000 -14.66 6,883 -11.48 0.0217
2014-05-14 2014-03-31 13F BOSTON PROPERTIES COM 101121101 68,200 0 0.00 7,776 13.45 0.0267
2014-02-13 2013-12-31 13F BOSTON PROPERTIES COM 101121101 68,200 -11,200 -14.11 6,854 -19.12 0.0264
2013-11-13 2013-09-30 13F BOSTON PROPERTIES COM 101121101 79,400 2,800 3.66 8,474 4.88 0.0376
2013-08-14 2013-06-30 13F BOSTON PROPERTIES COM 101121101 76,600 76,600 8,080 0.0354
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.