보스턴 프로퍼티, Inc.
MX ˙ BMV ˙ US1011211018
SecurityMX:BXP / Boston Properties, Inc.
InstitutionAPG Asset Management N.V.
Latest Disclosed Ownership71,842 shares
Latest Disclosed Value $ 3,236,070
APG Asset Management N.V. reports 6.84% decrease in ownership of BXP / Boston Properties, Inc.

On May 13, 2026 - APG Asset Management N.V. filed a 13F-HR form disclosing ownership of 71,842 shares of Boston Properties, Inc. (MX:BXP) valued at $3,236,070 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 77,113 shares of Boston Properties, Inc.. This represents a change in shares of -6.84% 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)
2026-05-13 2026-03-31 13F BXP COM 101121101 71,842 -5,271 -6.84 3,236 -26.95 0.0103
2026-02-12 2025-12-31 13F BXP COM 101121101 77,113 -4,087 -5.03 4,431 -13.76 0.0126
2025-11-12 2025-09-30 13F BXP COM 101121101 81,200 0 0.00 5,137 10.07 0.0144
2025-08-12 2025-06-30 13F BXP COM 101121101 81,200 5,600 7.41 4,667 -0.74 0.0138
2025-05-14 2025-03-31 13F BXP COM 101121101 75,600 -1,500 -1.95 4,702 -15.07 0.0146
2025-02-13 2024-12-31 13F BXP COM 101121101 77,100 77,100 5,537 0.0154
2024-11-14 2024-09-30 13F BOSTON PROPERTIES COM 101121101 0 -15,985 -100.00 0 -100.00
2024-08-14 2024-06-30 13F BOSTON PROPERTIES COM 101121101 15,985 11,100 227.23 918 211.19 0.0016
2024-05-14 2024-03-31 13F BOSTON PROPERTIES COM 101121101 4,885 0 0.00 295 -4.84 0.0005
2024-02-13 2023-12-31 13F BOSTON PROPERTIES COM 101121101 4,885 -263 -5.11 310 1.31 0.0006
2023-11-14 2023-09-30 13F BOSTON PROPERTIES COM 101121101 5,148 0 0.00 306 12.92 0.0006
2023-08-14 2023-06-30 13F BOSTON PROPERTIES COM 101121101 5,148 -900 -14.88 272 -9.97 0.0005
2023-05-12 2023-03-31 13F BOSTON PROPERTIES COM 101121101 6,048 -9,183 -60.29 301 30,000.00 0.0006
2023-02-14 2022-12-31 13F BOSTON PROPERTIES COM 101121101 15,231 9,183 151.84 1 -99.78 0.0020
2022-11-14 2022-09-30 13F BOSTON PROPERTIES COM 101121101 6,048 700 13.09 463 1.76 0.0012
2022-08-12 2022-06-30 13F BOSTON PROPERTIES COM 101121101 5,348 -6,100 -53.28 455 -65.66 0.0011
2022-05-12 2022-03-31 13F BOSTON PROPERTIES COM 101121101 11,448 3,200 38.80 1,325 58.68 0.0025
2022-02-11 2021-12-31 13F BOSTON PROPERTIES COM 101121101 8,248 -2,800 -25.34 835 -19.17 0.0014
2021-11-15 2021-09-30 13F/A-1 BOSTON PROPERTIES COM 101121101 11,048 -2,600 -19.05 1,033 -21.68 0.0018
2021-11-15 2021-09-30 13F BOSTON PROPERTIES COM 101121101 11,048 -2,600 1,033 0.0019
2021-08-13 2021-06-30 13F BOSTON PROPERTIES COM 101121101 13,648 -6,100 -30.89 1,319 -22.46 0.0022
2021-05-14 2021-03-31 13F BOSTON PROPERTIES COM 101121101 19,748 -63,664 -76.32 1,701 -73.60 0.0029
2021-02-12 2020-12-31 13F BOSTON PROPERTIES COM 101121101 83,412 -8,374 -9.12 6,444 2.53 0.0105
2020-11-12 2020-09-30 13F BOSTON PROPERTIES COM 101121101 91,786 -3,400 -3.57 6,285 -17.95 0.0109
2020-08-14 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 95,186 4,069 4.47 7,660 -8.85 0.0140
2020-05-19 2020-03-31 13F/A-2 BOSTON PROPERTIES COM 101121101 91,117 72,426 387.49 8,404 266.03 0.0165
2020-05-15 2020-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 91,117 0 8,404 0.0166
2020-05-14 2020-03-31 13F BOSTON PROPERTIES COM 101121101 48,615 29,924 5,796 10,844.0982
2020-02-13 2019-12-31 13F BOSTON PROPERTIES COM 101121101 18,691 -16,063 -46.22 2,296 -44.45 0.0037
2019-11-08 2019-09-30 13F BOSTON PROPERTIES COM 101121101 34,754 -14,661 -29.67 4,133 -26.17 0.0068
2019-08-13 2019-06-30 13F BOSTON PROPERTIES COM 101121101 49,415 800 1.65 5,598 -3.42 0.0096
2019-05-14 2019-03-31 13F BOSTON PROPERTIES COM 101121101 48,615 900 1.89 5,796 23.37 0.0106
2019-02-19 2018-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 47,715 -5,100 -9.66 4,698 -16.06 0.0095
2019-02-13 2018-12-31 13F BOSTON PROPERTIES COM 101121101 47,715 -5,100 4,698
2018-11-09 2018-09-30 13F BOSTON PROPERTIES COM 101121101 52,815 -300 -0.56 5,597 -1.91 0.0098
2018-08-13 2018-06-30 13F BOSTON PROPERTIES COM 101121101 53,115 0 0.00 5,706 7.22 0.0105
2018-05-14 2018-03-31 13F BOSTON PROPERTIES COM 101121101 53,115 -1,038,822 -95.14 5,322 -95.50 0.0103
2018-02-21 2017-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 1,091,937 34,100 3.22 118,242 -9.04 0.2163
2018-01-24 2017-12-31 13F BOSTON PROPERTIES COM 101121101 1,091,937 34,100 118,242
2017-10-19 2017-09-30 13F BOSTON PROPERTIES COM 101121101 1,057,837 93,961 9.75 129,987 9.62 0.2140
2017-07-21 2017-06-30 13F BOSTON PROPERTIES COM 101121101 963,876 293,526 43.79 118,576 33.59 0.2154
2017-05-01 2017-03-31 13F BOSTON PROPERTIES COM 101121101 670,350 143,708 27.29 88,761 41.33 0.1627
2017-01-30 2016-12-31 13F BOSTON PROPERTIES COM 101121101 526,642 422,625 406.30 62,803 343.02 0.1181
2016-10-31 2016-09-30 13F BOSTON PROPERTIES COM 101121101 104,017 21,700 26.36 14,176 30.56 0.0249
2016-08-11 2016-06-30 13F BOSTON PROPERTIES COM 101121101 82,317 38,502 87.87 10,858 95.01 0.0204
2016-05-16 2016-03-31 13F BOSTON PROPERTIES COM 101121101 43,815 0 0.00 5,568 -0.36 0.0116
2016-02-17 2015-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 43,815 -30,343 -40.92 5,588 -36.36 0.0129
2016-02-16 2015-12-31 13F BOSTON PROPERTIES COM 101121101 317,765 5,588
2015-11-12 2015-09-30 13F BOSTON PROPERTIES COM 101121101 74,158 -15,364 -17.16 8,780 -18.97 0.0201
2015-08-12 2015-06-30 13F BOSTON PROPERTIES COM 101121101 89,522 -257,616 -74.21 10,836 -77.78 0.0217
2015-05-14 2015-03-31 13F BOSTON PROPERTIES COM 101121101 347,138 65,601 23.30 48,766 34.60 0.1008
2015-02-09 2014-12-31 13F BOSTON PROPERTIES COM 101121101 281,537 51,206 22.23 36,231 35.88 0.0695
2014-11-12 2014-09-30 13F BOSTON PROPERTIES COM 101121101 230,331 17,166 8.05 26,663 5.84 0.0539
2014-08-11 2014-06-30 13F BOSTON PROPERTIES COM 101121101 213,165 20,343 10.55 25,192 14.07 0.0538
2014-04-30 2014-03-31 13F BOSTON PROPERTIES COM 101121101 192,822 12,994 7.23 22,084 22.36 0.0577
2014-02-20 2013-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 179,828 -4,652 -2.52 18,049 -8.48 0.0531
2014-02-12 2013-12-31 13F BOSTON PROPERTIES COM 101121101 179,828 18,049
2013-11-13 2013-09-30 13F BOSTON PROPERTIES COM 101121101 184,480 -17,147 -8.50 19,721 -7.27 0.0623
2013-08-14 2013-06-30 13F BOSTON PROPERTIES COM 101121101 201,627 201,627 21,266 0.0664
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.