Boston Properties, Inc.
MX ˙ BMV ˙ US1011211018
SecurityMX:BXP / Boston Properties, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership5,714 shares
Latest Disclosed Value $ 296,557
Signaturefd, Llc reports 22.61% decrease in ownership of BXP / Boston Properties, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 5,714 shares of Boston Properties, Inc. (MX:BXP) valued at $296,557 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 7,383 shares of Boston Properties, Inc.. This represents a change in shares of -22.61% 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)
2026-04-07 2026-03-31 13F BXP COM 101121101 5,714 -1,669 -22.61 297 -40.56 0.0045
2026-01-20 2025-12-31 13F BXP COM 101121101 7,383 179 2.48 498 -6.92 0.0076
2025-10-21 2025-09-30 13F BXP COM 101121101 7,204 -100 -1.37 536 8.74 0.0084
2025-07-16 2025-06-30 13F BXP COM 101121101 7,304 567 8.42 493 8.85 0.0084
2025-05-02 2025-03-31 13F BXP COM 101121101 6,737 -167 -2.42 453 -11.89 0.0086
2025-02-10 2024-12-31 13F BXP COM 101121101 6,904 -80 -1.15 513 -8.56 0.0097
2024-10-21 2024-09-30 13F BXP COM 101121101 6,984 387 5.87 562 38.18 0.0107
2024-07-29 2024-06-30 13F BOSTON PROPERTIES COM 101121101 6,597 168 2.61 406 -3.10 0.0083
2024-05-03 2024-03-31 13F BOSTON PROPERTIES COM 101121101 6,429 -127 -1.94 420 -8.91 0.0089
2024-02-01 2023-12-31 13F BOSTON PROPERTIES COM 101121101 6,556 -353 -5.11 460 12.20 0.0106
2023-11-03 2023-09-30 13F BOSTON PROPERTIES COM 101121101 6,909 232 3.47 411 6.77 0.0107
2023-08-01 2023-06-30 13F BOSTON PROPERTIES COM 101121101 6,677 3,344 100.33 385 113.33 0.0098
2023-04-28 2023-03-31 13F BOSTON PROPERTIES COM 101121101 3,333 1,649 97.92 180 59.29 0.0049
2023-01-30 2022-12-31 13F BOSTON PROPERTIES COM 101121101 1,684 442 35.59 114 21.51 0.0033
2022-11-08 2022-09-30 13F BOSTON PROPERTIES COM 101121101 1,242 788 173.57 93 132.50 0.0032
2022-08-10 2022-06-30 13F BOSTON PROPERTIES COM 101121101 454 -586 -56.35 40 -70.15 0.0014
2022-05-02 2022-03-31 13F BOSTON PROPERTIES COM 101121101 1,040 124 13.54 134 26.42 0.0040
2022-01-25 2021-12-31 13F BOSTON PROPERTIES COM 101121101 916 53 6.14 106 12.77 0.0033
2021-10-28 2021-09-30 13F BOSTON PROPERTIES COM 101121101 863 230 36.33 94 28.77 0.0032
2021-07-26 2021-06-30 13F BOSTON PROPERTIES COM 101121101 633 393 163.75 73 204.17 0.0029
2021-04-30 2021-03-31 13F BOSTON PROPERTIES COM 101121101 240 46 23.71 24 33.33 0.0011
2021-02-11 2020-12-31 13F BOSTON PROPERTIES COM 101121101 194 -69 -26.24 18 -14.29 0.0008
2020-11-03 2020-09-30 13F BOSTON PROPERTIES COM 101121101 263 -98 -27.15 21 -36.36 0.0011
2020-07-30 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 361 -75 -17.20 33 -17.50 0.0020
2020-04-23 2020-03-31 13F BOSTON PROPERTIES COM 101121101 436 302 225.37 40 122.22 0.0035
2020-02-05 2019-12-31 13F BOSTON PROPERTIES COM 101121101 134 -6 -4.29 18 0.00 0.0013
2019-10-16 2019-09-30 13F BOSTON PROPERTIES COM 101121101 140 12 9.38 18 5.88 0.0015
2019-07-31 2019-06-30 13F BOSTON PROPERTIES COM 101121101 128 10 8.47 17 6.25 0.0015
2019-05-09 2019-03-31 13F BOSTON PROPERTIES COM 101121101 118 26 28.26 16 60.00 0.0014
2019-02-13 2018-12-31 13F BOSTON PROPERTIES COM 101121101 92 -29 -23.97 10 -33.33 0.0009
2018-11-14 2018-09-30 13F BOSTON PROPERTIES COM 101121101 121 0 0.00 15 0.00 0.0015
2018-08-14 2018-06-30 13F BOSTON PROPERTIES COM 101121101 121 26 27.37 15 25.00 0.0017
2018-05-08 2018-03-31 13F BOSTON PROPERTIES COM 101121101 95 95 12 0.0014
2017-02-14 2016-12-31 13F BOSTON PROPERTIES COM 101121101 0 -197 -100.00 0 -100.00
2016-11-14 2016-09-30 13F BOSTON PROPERTIES COM 101121101 197 31 18.67 27 22.73 0.0039
2016-07-29 2016-06-30 13F BOSTON PROPERTIES COM 101121101 166 108 186.21 22 214.29 0.0032
2016-05-12 2016-03-31 13F BOSTON PROPERTIES COM 101121101 58 3 5.45 7 0.00 0.0012
2016-01-22 2015-12-31 13F BOSTON PROPERTIES COM 101121101 55 34 161.90 7 250.00 0.0014
2015-10-23 2015-09-30 13F BOSTON PROPERTIES COM 101121101 21 -56 -72.73 2 -77.78 0.0005
2015-07-15 2015-06-30 13F BOSTON PROPERTIES COM 101121101 77 36 87.80 9 50.00 0.0020
2015-04-15 2015-03-31 13F BOSTON PROPERTIES COM 101121101 41 0 0.00 6 20.00 0.0015
2015-02-13 2014-12-31 13F BOSTON PROPERTIES COM 101121101 41 41 0.00 5 0.0012
2014-11-13 2014-09-30 13F BOSTON PROPERTIES COM 101121101 0 -57 -100.00 0 -100.00
2014-08-14 2014-06-30 13F BOSTON PROPERTIES COM 101121101 57 57 7 0.0024
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.