Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionCWM Advisors, LLC
Latest Disclosed Ownership7,323 shares
Latest Disclosed Value $ 380,064
CWM Advisors, LLC reports 53.81% increase in ownership of BXP / Boston Properties, Inc.

On May 13, 2026 - CWM Advisors, LLC filed a 13F-HR/A form disclosing ownership of 7,323 shares of Boston Properties, Inc. (US:BXP) valued at $380,064 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 4,761 shares of Boston Properties, Inc.. This represents a change in shares of 53.81% during the quarter. The current value of the position is $445,971 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.

Upgrade to unlock premium data and export to Excel .

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/A-1 BXP COM 101121101 7,323 2,562 53.81 380 18.38 0.0762
2026-04-23 2026-03-31 13F BXP COM 101121101 6,347 1,586 329 0.0271
2026-02-17 2025-12-31 13F BXP COM 101121101 4,761 682 16.72 321 5.94 0.0289
2025-10-15 2025-09-30 13F BXP COM 101121101 4,079 -46 -1.12 303 8.99 0.0295
2025-07-24 2025-06-30 13F BXP COM 101121101 4,125 -473 -10.29 278 -9.74 0.0303
2025-06-03 2025-03-31 13F BXP COM 101121101 4,598 1,124 32.35 309 19.38 0.0367
2025-01-17 2024-12-31 13F BXP COM 101121101 3,474 -71 -2.00 258 -9.47 0.0289
2024-10-10 2024-09-30 13F BXP COM 101121101 3,545 -794 -18.30 285 6.74 0.0292
2024-08-12 2024-06-30 13F BOSTON PROPERTIES COM 101121101 4,339 -2,464 -36.22 267 -39.86 0.0308
2024-05-07 2024-03-31 13F BOSTON PROPERTIES COM 101121101 6,803 523 8.33 444 0.91 0.0455
2024-02-12 2023-12-31 13F BOSTON PROPERTIES COM 101121101 6,280 144 2.35 441 20.88 0.0485
2023-10-26 2023-09-30 13F BOSTON PROPERTIES COM 101121101 6,136 -17,175 -73.68 365 -72.88 0.0466
2023-07-31 2023-06-30 13F BOSTON PROPERTIES COM 101121101 23,311 -1,390 -5.63 1,342 0.45 0.1624
2023-04-24 2023-03-31 13F BOSTON PROPERTIES COM 101121101 24,701 2,218 9.87 1,337 -12.05 0.1701
2023-01-26 2022-12-31 13F BOSTON PROPERTIES COM 101121101 22,483 2,474 12.36 1,519 1.27 0.1955
2022-11-07 2022-09-30 13F BOSTON PROPERTIES COM 101121101 20,009 -1,159 -5.48 1,500 -20.34 0.2119
2022-08-10 2022-06-30 13F BOSTON PROPERTIES COM 101121101 21,168 1,451 7.36 1,883 -25.87 0.2498
2022-04-21 2022-03-31 13F BOSTON PROPERTIES COM 101121101 19,717 -3,460 -14.93 2,540 -4.87 0.2940
2022-02-14 2021-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 23,177 2,570 12.47 2,670 19.57 0.3061
2021-11-09 2021-09-30 13F BOSTON PROPERTIES COM 101121101 20,607 16,210 368.66 2,233 343.06 0.2823
2021-08-10 2021-06-30 13F BOSTON PROPERTIES COM 101121101 4,397 168 3.97 504 17.76 0.0663
2021-04-30 2021-03-31 13F BOSTON PROPERTIES COM 101121101 4,229 -677 -13.80 428 -7.76 0.0656
2021-02-12 2020-12-31 13F BOSTON PROPERTIES COM 101121101 4,906 240 5.14 464 23.73 0.1026
2020-11-16 2020-09-30 13F BOSTON PROPERTIES COM 101121101 4,666 467 11.12 375 -1.32 0.1032
2020-08-12 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 4,199 23 0.55 380 -1.30 0.1312
2020-05-08 2020-03-31 13F BOSTON PROPERTIES COM 101121101 4,176 -505 -10.79 385 -40.31 0.1538
2020-01-24 2019-12-31 13F BOSTON PROPERTIES COM 101121101 4,681 371 8.61 645 15.38 0.2313
2019-11-13 2019-09-30 13F BOSTON PROPERTIES COM 101121101 4,310 554 14.75 559 15.26 0.2131
2019-07-16 2019-06-30 13F BOSTON PROPERTIES COM 101121101 3,756 457 13.85 485 9.73 0.2040
2019-05-16 2019-03-31 13F BOSTON PROPERTIES COM 101121101 3,299 1,080 48.67 442 76.80 0.2052
2019-02-21 2018-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 2,219 -126 -5.37 250 -13.49 0.1681
2019-02-21 2018-09-30 13F/A-1 BOSTON PROPERTIES COM 101121101 2,345 147 6.69 289 4.71 0.1781
2018-11-07 2018-09-30 13F BOSTON PROPERTIES COM 101121101 2,318 2,318 285
2019-02-21 2018-06-30 13F/A-1 BOSTON PROPERTIES COM 101121101 2,198 199 9.95 276 12.20 0.1962
2019-02-22 2018-03-31 13F/A-1 BOSTON PROPERTIES COM 101121101 1,999 625 45.49 246 37.43 0.2506
2019-02-21 2017-12-31 13F/A-1 BOSTON PROPERTIES COM 101121101 1,374 1,374 179 0.1522
2018-02-15 2017-12-31 13F Boston Properties COM 101121101 4 1 0.0008
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.