Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionCommerce Bank
Latest Disclosed Ownership7,132 shares
Latest Disclosed Value $ 370,151
Commerce Bank reports 72.06% increase in ownership of BXP / Boston Properties, Inc.

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 7,132 shares of Boston Properties, Inc. (US:BXP) valued at $370,151 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 4,145 shares of Boston Properties, Inc.. This represents a change in shares of 72.06% during the quarter. The current value of the position is $434,339 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)
2026-05-11 2026-03-31 13F BXP COM 101121101 7,132 2,987 72.06 370 32.62 0.0008
2026-02-13 2025-12-31 13F BXP COM 101121101 4,145 -353 -7.85 280 -16.47 0.0015
2025-11-12 2025-09-30 13F BXP COM 101121101 4,498 -182 -3.89 334 6.03 0.0019
2025-08-07 2025-06-30 13F BXP COM 101121101 4,680 -227 -4.63 316 -4.26 0.0019
2025-05-08 2025-03-31 13F BXP COM 101121101 4,907 -199 -3.90 330 -13.19 0.0021
2025-02-13 2024-12-31 13F BXP COM 101121101 5,106 -394 -7.16 380 -14.25 0.0023
2024-11-08 2024-09-30 13F BXP COM 101121101 5,500 -291 -5.03 443 24.16 0.0027
2024-08-12 2024-06-30 13F BXP COM 101121101 5,791 555 10.60 356 4.40 0.0023
2024-05-03 2024-03-31 13F BOSTON PROPERTIES COM 101121101 5,236 3 0.06 342 -7.08 0.0023
2024-02-09 2023-12-31 13F BOSTON PROPERTIES COM 101121101 5,233 -538 -9.32 367 7.00 0.0026
2023-11-14 2023-09-30 13F BOSTON PROPERTIES COM 101121101 5,771 1,555 36.88 343 41.74 0.0027
2023-08-08 2023-06-30 13F BOSTON PROPERTIES COM 101121101 4,216 -3,779 -47.27 243 -43.98 0.0018
2023-05-04 2023-03-31 13F BOSTON PROPERTIES COM 101121101 7,995 -84 -1.04 433 -20.73 0.0034
2023-02-10 2022-12-31 13F BOSTON PROPERTIES COM 101121101 8,079 -500 -5.83 546 -15.24 0.0044
2022-11-04 2022-09-30 13F BOSTON PROPERTIES COM 101121101 8,579 229 2.74 643 -13.34 0.0056
2022-08-12 2022-06-30 13F BOSTON PROPERTIES COM 101121101 8,350 -1,156 -12.16 742 -39.43 0.0060
2022-05-09 2022-03-31 13F BOSTON PROPERTIES COM 101121101 9,506 264 2.86 1,225 15.02 0.0084
2022-02-14 2021-12-31 13F BOSTON PROPERTIES COM 101121101 9,242 160 1.76 1,065 8.23 0.0070
2021-11-09 2021-09-30 13F BOSTON PROPERTIES COM 101121101 9,082 1,764 24.10 984 17.28 0.0070
2021-08-09 2021-06-30 13F BOSTON PROPERTIES COM 101121101 7,318 -103 -1.39 839 11.57 0.0060
2021-05-05 2021-03-31 13F BOSTON PROPERTIES COM 101121101 7,421 -788 -9.60 752 -3.09 0.0057
2021-02-09 2020-12-31 13F BOSTON PROPERTIES COM 101121101 8,209 1,767 27.43 776 50.10 0.0063
2020-11-06 2020-09-30 13F BOSTON PROPERTIES COM 101121101 6,442 2,623 68.68 517 49.86 0.0047
2020-08-07 2020-06-30 13F BOSTON PROPERTIES COM 101121101 3,819 -1,287 -25.21 345 -26.75 0.0034
2020-05-08 2020-03-31 13F BOSTON PROPERTIES COM 101121101 5,106 156 3.15 471 -30.94 0.0057
2020-02-14 2019-12-31 13F BOSTON PROPERTIES COM 101121101 4,950 878 21.56 682 29.17 0.0065
2019-11-12 2019-09-30 13F BOSTON PROPERTIES COM 101121101 4,072 400 10.89 528 11.39 0.0054
2019-08-07 2019-06-30 13F BOSTON PROPERTIES COM 101121101 3,672 471 14.71 474 10.49 0.0053
2019-05-08 2019-03-31 13F BOSTON PROPERTIES COM 101121101 3,201 414 14.85 429 36.62 0.0051
2019-02-11 2018-12-31 13F BOSTON PROPERTIES COM 101121101 2,787 22 0.80 314 -7.92 0.0040
2018-11-02 2018-09-30 13F BOSTON PROPERTIES COM 101121101 2,765 -1,852 -40.11 341 -41.11 0.0041
2018-08-08 2018-06-30 13F BOSTON PROPERTIES COM 101121101 4,617 -55 -1.18 579 0.70 0.0074
2018-05-03 2018-03-31 13F BOSTON PROPERTIES COM 101121101 4,672 -273 -5.52 575 -10.58 0.0076
2018-02-12 2017-12-31 13F BOSTON PROPERTIES COM 101121101 4,945 127 2.64 643 8.61 0.0084
2017-11-07 2017-09-30 13F/A-1 BOSTON PROPERTIES COM 101121101 4,818 -93 -1.89 592 -1.99 0.0080
2017-11-07 2017-09-30 13F BOSTON PROPERTIES COM 101121101 4,911 604
2017-08-08 2017-06-30 13F BOSTON PROPERTIES COM 101121101 4,911 212 4.51 604 -2.89 0.0085
2017-05-05 2017-03-31 13F BOSTON PROPERTIES COM 101121101 4,699 509 12.15 622 18.03 0.0089
2017-02-08 2016-12-31 13F BOSTON PROPERTIES COM 101121101 4,190 532 14.54 527 5.82 0.0079
2016-11-03 2016-09-30 13F BOSTON PROPERTIES COM 101121101 3,658 -100 -2.66 498 0.40 0.0078
2016-08-09 2016-06-30 13F BOSTON PROPERTIES COM 101121101 3,758 -14 -0.37 496 3.55 0.0078
2016-04-27 2016-03-31 13F BOSTON PROPERTIES COM 101121101 3,772 -223 -5.58 479 -6.08 0.0080
2016-02-12 2015-12-31 13F BOSTON PROPERTIES COM 101121101 3,995 -447 -10.06 510 -2.86 0.0085
2015-11-10 2015-09-30 13F BOSTON PROPERTIES COM 101121101 4,442 200 4.71 525 2.34 0.0090
2015-08-03 2015-06-30 13F BOSTON PROPERTIES COM 101121101 4,242 -6 -0.14 513 -14.07 0.0080
2015-05-06 2015-03-31 13F BOSTON PROPERTIES COM 101121101 4,248 1,851 77.22 597 93.20 0.0093
2015-02-11 2014-12-31 13F BOSTON PROPERTIES COM 101121101 2,397 98 4.26 309 15.73 0.0049
2014-11-06 2014-09-30 13F BOSTON PROPERTIES COM 101121101 2,299 583 33.97 267 31.53 0.0044
2014-08-05 2014-06-30 13F BOSTON PROPERTIES COM 101121101 1,716 1,716 -16.01 203 -1.93 0.0033
2013-11-05 2013-09-30 13F/A-2 BOSTON PROPERTIES COM 101121101 0 -2,043 -100.00 0 -100.00
2013-08-07 2013-06-30 13F BOSTON PROPERTIES COM 101121101 2,043 0 0.00 207 0.00 0.0038
2013-08-08 2013-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 2,043 2,043 207 0.0040
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.