波士頓地產公司
MX ˙ BMV ˙ US1011211018
SecurityMX:BXP / Boston Properties, Inc.
InstitutionM&t Bank Corp
Latest Disclosed Ownership23,794 shares
Latest Disclosed Value $ 1,234,909
M&t Bank Corp reports 25.73% decrease in ownership of BXP / Boston Properties, Inc.

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 23,794 shares of Boston Properties, Inc. (MX:BXP) valued at $1,234,909 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 32,036 shares of Boston Properties, Inc.. This represents a change in shares of -25.73% 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)
2026-05-12 2026-03-31 13F BXP COM 101121101 23,794 -8,242 -25.73 1,235 -42.92 0.0042
2026-01-30 2025-12-31 13F/A-1 BXP COM 101121101 32,036 14,607 83.81 2,162 67.08 0.0069
2026-01-28 2025-12-31 13F BXP COM 101121101 4,294 -13,135 542 0.0003
2025-11-14 2025-09-30 13F BXP COM 101121101 17,429 -14,513 -45.44 1,295 -39.95 0.0044
2025-08-13 2025-06-30 13F BXP COM 101121101 31,942 832 2.67 2,156 3.11 0.0074
2025-04-30 2025-03-31 13F BXP COM 101121101 31,110 -3,114 -9.10 2,090 -17.85 0.0076
2025-02-06 2024-12-31 13F BXP COM 101121101 34,224 -585 -1.68 2,545 -9.14 0.0085
2024-11-19 2024-09-30 13F/A-1 BXP COM 101121101 34,809 615 1.80 2,800 33.08 0.0092
2024-11-15 2024-09-30 13F BXP COM 101121101 34,809 615 2,800 0.0017
2024-07-31 2024-06-30 13F BOSTON PROPERTIES COM 101121101 34,194 5,825 20.53 2,105 13.61 0.0072
2024-05-07 2024-03-31 13F BOSTON PROPERTIES COM 101121101 28,369 2,841 11.13 1,853 3.41 0.0064
2024-02-06 2023-12-31 13F BOSTON PROPERTIES COM 101121101 25,528 1,529 6.37 1,791 25.51 0.0066
2023-11-02 2023-09-30 13F BOSTON PROPERTIES COM 101121101 23,999 1,112 4.86 1,427 8.27 0.0057
2023-08-09 2023-06-30 13F BOSTON PROPERTIES COM 101121101 22,887 2,105 10.13 1,318 17.26 0.0049
2023-05-11 2023-03-31 13F BOSTON PROPERTIES COM 101121101 20,782 1,194 6.10 1,124 -15.04 0.0044
2023-02-13 2022-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 19,588 271 1.40 1,324 -8.63 0.0053
2023-02-13 2022-12-31 13F BORGWARNER COM 101121101 7,372 -11,945 497 0.0020
2022-11-17 2022-09-30 13F/A-1 BOSTON PROPERTIES COM 101121101 19,317 -440 -2.23 1,448 -17.59 0.0064
2022-11-14 2022-09-30 13F BOSTON PROPERTIES COM 101121101 19,317 -440 1,448 0.0012
2022-08-05 2022-06-30 13F BOSTON PROPERTIES COM 101121101 19,757 2,216 12.63 1,757 -22.26 0.0083
2022-05-09 2022-03-31 13F BOSTON PROPERTIES COM 101121101 17,541 2,425 16.04 2,260 29.81 0.0100
2022-02-07 2021-12-31 13F BOSTON PROPERTIES COM 101121101 15,116 -1,408 -8.52 1,741 -2.74 0.0073
2021-10-28 2021-09-30 13F BOSTON PROPERTIES COM 101121101 16,524 396 2.46 1,790 -3.14 0.0081
2021-08-13 2021-06-30 13F BOSTON PROPERTIES COM 101121101 16,128 1,367 9.26 1,848 23.61 0.0081
2021-05-06 2021-03-31 13F BOSTON PROPERTIES COM 101121101 14,761 502 3.52 1,495 10.91 0.0065
2021-02-12 2020-12-31 13F BOSTON PROPERTIES COM 101121101 14,259 -3,050 -17.62 1,348 -3.02 0.0059
2020-11-06 2020-09-30 13F BOSTON PROPERTIES COM 101121101 17,309 -423 -2.39 1,390 -13.18 0.0068
2020-07-29 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 17,732 4,096 30.04 1,601 27.37 0.0086
2020-05-14 2020-03-31 13F BOSTON PROPERTIES COM 101121101 13,636 4,681 52.27 1,257 1.78 0.0074
2020-02-07 2019-12-31 13F BOSTON PROPERTIES COM 101121101 8,955 -472 -5.01 1,235 0.98 0.0058
2019-11-12 2019-09-30 13F BOSTON PROPERTIES COM 101121101 9,427 -9 -0.10 1,223 0.41 0.0061
2019-08-12 2019-06-30 13F BOSTON PROPERTIES COM 101121101 9,436 -78 -0.82 1,218 -4.25 0.0064
2019-05-15 2019-03-31 13F BOSTON PROPERTIES COM 101121101 9,514 -90 -0.94 1,272 17.67 0.0067
2019-02-01 2018-12-31 13F BOSTON PROPERTIES COM 101121101 9,604 -1,907 -16.57 1,081 -23.66 0.0062
2018-11-09 2018-09-30 13F BOSTON PROPERTIES COM 101121101 11,511 33 0.29 1,416 -1.67 0.0071
2018-08-10 2018-06-30 13F BOSTON PROPERTIES COM 101121101 11,478 -1,091 -8.68 1,440 -7.04 0.0078
2018-05-04 2018-03-31 13F BOSTON PROPERTIES COM 101121101 12,569 1,264 11.18 1,549 5.45 0.0083
2018-02-06 2017-12-31 13F BOSTON PROPERTIES COM 101121101 11,305 -519 -4.39 1,469 1.10 0.0077
2017-11-13 2017-09-30 13F BOSTON PROPERTIES COM 101121101 11,824 464 4.08 1,453 3.93 0.0079
2017-08-11 2017-06-30 13F BOSTON PROPERTIES COM 101121101 11,360 -9,727 -46.13 1,398 -49.93 0.0083
2017-05-10 2017-03-31 13F BOSTON PROPERTIES COM 101121101 21,087 -4,475 -17.51 2,792 -13.10 0.0169
2017-02-14 2016-12-31 13F BOSTON PROPERTIES COM 101121101 25,562 2,079 8.85 3,213 0.44 0.0200
2016-11-04 2016-09-30 13F BOSTON PROPERTIES COM 101121101 23,483 1,173 5.26 3,199 8.77 0.0204
2016-08-04 2016-06-30 13F BOSTON PROPERTIES COM 101121101 22,310 -6,276 -21.95 2,941 -19.03 0.0198
2016-05-11 2016-03-31 13F BOSTON PROPERTIES COM 101121101 28,586 -5,558 -16.28 3,632 -16.60 0.0246
2016-02-12 2015-12-31 13F BOSTON PROPERTIES COM 101121101 34,144 -3,506 -9.31 4,355 -2.31 0.0289
2015-11-13 2015-09-30 13F BOSTON PROPERTIES COM 101121101 37,650 10,511 38.73 4,458 35.75 0.0304
2015-08-14 2015-06-30 13F BOSTON PROPERTIES COM 101121101 27,139 3,383 14.24 3,284 -1.59 0.0198
2015-05-14 2015-03-31 13F BOSTON PROPERTIES COM 101121101 23,756 22 0.09 3,337 9.23 0.0208
2015-02-12 2014-12-31 13F BOSTON PROPERTIES COM 101121101 23,734 -1,635 -6.44 3,055 4.05 0.0191
2014-11-14 2014-09-30 13F BOSTON PROPERTIES COM 101121101 25,369 24,744 3,959.04 2,936 3,867.57 0.0206
2014-08-13 2014-06-30 13F BOSTON PROPERTIES INC COMMON 101121101 625 0 0.00 74 2.78 0.0031
2014-05-14 2014-03-31 13F BOSTON PROPERTIES INC COMMON STOCK 101121101 625 0 0.00 72 14.29 0.0030
2014-02-12 2013-12-31 13F BOSTON PROPERTIES INC COMMON STOCK 101121101 625 0 0.00 63 -4.55 0.0026
2013-11-13 2013-09-30 13F BOSTON PROPERTIES INC COMMON STOCK 101121101 625 -175 -21.88 66 -21.43 0.0031
2013-07-30 2013-06-30 13F BOSTON PROPERTIES INC COMMON STOCK 101121101 800 800 84 0.0041
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.