Boston Properties, Inc.
MX ˙ BMV ˙ US1011211018
SecurityMX:BXP / Boston Properties, Inc.
InstitutionCIBC Asset Management Inc
Latest Disclosed Ownership33,175 shares
Latest Disclosed Value $ 1,721,783
CIBC Asset Management Inc reports 5.25% decrease in ownership of BXP / Boston Properties, Inc.

On May 12, 2026 - CIBC Asset Management Inc filed a 13F-HR form disclosing ownership of 33,175 shares of Boston Properties, Inc. (MX:BXP) valued at $1,721,783 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 35,013 shares of Boston Properties, Inc.. This represents a change in shares of -5.25% 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 33,175 -1,838 -5.25 1,722 -27.14 0.0042
2026-02-10 2025-12-31 13F BXP COM 101121101 35,013 16,207 86.18 2,363 68.96 0.0057
2025-10-31 2025-09-30 13F BXP COM 101121101 18,806 -24 -0.13 1,398 10.08 0.0040
2025-08-14 2025-06-30 13F BXP COM 101121101 18,830 -3,642 -16.21 1,270 -15.84 0.0039
2025-05-13 2025-03-31 13F BXP COM 101121101 22,472 -230 -1.01 1,510 -10.60 0.0050
2025-01-31 2024-12-31 13F BXP COM 101121101 22,702 1,003 4.62 1,688 -3.27 0.0055
2024-11-06 2024-09-30 13F BXP COM 101121101 21,699 1,794 9.01 1,746 42.45 0.0057
2024-08-01 2024-06-30 13F BOSTON PROPERTIES COM 101121101 19,905 -924 -4.44 1,225 -9.93 0.0044
2024-05-09 2024-03-31 13F BOSTON PROPERTIES COM 101121101 20,829 625 3.09 1,360 -4.02 0.0047
2024-02-13 2023-12-31 13F BOSTON PROPERTIES COM 101121101 20,204 -773 -3.68 1,418 13.63 0.0053
2023-10-30 2023-09-30 13F BOSTON PROPERTIES COM 101121101 20,977 -124 -0.59 1,248 2.63 0.0052
2023-08-14 2023-06-30 13F BOSTON PROPERTIES COM 101121101 21,101 -207 -0.97 1,215 5.38 0.0047
2023-05-12 2023-03-31 13F BOSTON PROPERTIES COM 101121101 21,308 391 1.87 1,153 -18.40 0.0046
2023-02-13 2022-12-31 13F BOSTON PROPERTIES COM 101121101 20,917 1,409 7.22 1,414 -3.42 0.0059
2022-11-03 2022-09-30 13F BOSTON PROPERTIES COM 101121101 19,508 1,669 9.36 1,463 -7.81 0.0064
2022-08-09 2022-06-30 13F BOSTON PROPERTIES COM 101121101 17,839 3,705 26.21 1,587 -12.80 0.0064
2022-05-06 2022-03-31 13F BOSTON PROPERTIES COM 101121101 14,134 135 0.96 1,820 12.90 0.0064
2022-02-08 2021-12-31 13F BOSTON PROPERTIES COM 101121101 13,999 558 4.15 1,612 10.71 0.0059
2021-11-09 2021-09-30 13F BOSTON PROPERTIES COM 101121101 13,441 456 3.51 1,456 -2.15 0.0059
2021-08-16 2021-06-30 13F BOSTON PROPERTIES COM 101121101 12,985 57 0.44 1,488 13.67 0.0060
2021-05-14 2021-03-31 13F BOSTON PROPERTIES COM 101121101 12,928 -368 -2.77 1,309 4.14 0.0056
2021-02-03 2020-12-31 13F BOSTON PROPERTIES COM 101121101 13,296 -24 -0.18 1,257 17.48 0.0059
2020-11-05 2020-09-30 13F BOSTON PROPERTIES COM 101121101 13,320 328 2.52 1,070 -8.86 0.0055
2020-07-28 2020-06-30 13F BOSTON PPTYS LTD PARTNERSHIP COM 101121101 12,992 -81 -0.62 1,174 -2.65 0.0069
2020-04-30 2020-03-31 13F BOSTON PROPERTIES COM 101121101 13,073 -493 -3.63 1,206 -35.51 0.0085
2020-02-14 2019-12-31 13F BOSTON PROPERTIES COM 101121101 13,566 -104 -0.76 1,870 5.53 0.0106
2019-10-30 2019-09-30 13F BOSTON PROPERTIES COM 101121101 13,670 5 0.04 1,772 0.51 0.0104
2019-08-05 2019-06-30 13F BOSTON PROPERTIES COM 101121101 13,665 -540 -3.80 1,763 -7.31 0.0105
2019-05-06 2019-03-31 13F BOSTON PROPERTIES COM 101121101 14,205 -7,264 -33.83 1,902 -21.27 0.0118
2019-02-12 2018-12-31 13F BOSTON PROPERTIES COM 101121101 21,469 -10,516 -32.88 2,416 -38.63 0.0178
2018-11-02 2018-09-30 13F BOSTON PROPERTIES COM 101121101 31,985 -11,311 -26.12 3,937 -27.50 0.0244
2018-08-09 2018-06-30 13F BOSTON PROPERTIES COM 101121101 43,296 618 1.45 5,430 3.25 0.0339
2018-04-30 2018-03-31 13F BOSTON PROPERTIES COM 101121101 42,678 649 1.54 5,259 -3.77 0.0341
2018-02-02 2017-12-31 13F BOSTON PROPERTIES COM 101121101 42,029 -92 -0.22 5,465 5.58 0.0334
2017-11-06 2017-09-30 13F BOSTON PROPERTIES COM 101121101 42,121 366 0.88 5,176 0.76 0.0324
2017-07-27 2017-06-30 13F BOSTON PROPERTIES COM 101121101 41,755 52 0.12 5,137 -6.97 0.0355
2017-05-12 2017-03-31 13F BOSTON PROPERTIES COM 101121101 41,703 -5,627 -11.89 5,522 -7.24 0.0379
2017-02-08 2016-12-31 13F BOSTON PROPERTIES COM 101121101 47,330 10,304 27.83 5,953 17.97 0.0428
2016-10-19 2016-09-30 13F BOSTON PROPERTIES COM 101121101 37,026 -46,008 -55.41 5,046 -53.93 0.0372
2016-08-02 2016-06-30 13F BOSTON PROPERTIES COM 101121101 83,034 -11,273 -11.95 10,952 -8.62 0.0824
2016-05-09 2016-03-31 13F BOSTON PROPERTIES COM 101121101 94,307 -10,361 -9.90 11,985 -10.22 0.0898
2016-02-02 2015-12-31 13F BOSTON PROPERTIES COM 101121101 104,668 10,125 10.71 13,349 19.25 0.1099
2015-11-03 2015-09-30 13F BOSTON PROPERTIES COM 101121101 94,543 8,616 10.03 11,194 7.62 0.0895
2015-08-06 2015-06-30 13F BOSTON PROPERTIES COM 101121101 85,927 37,566 77.68 10,401 53.09 0.0723
2015-05-08 2015-03-31 13F BOSTON PROPERTIES COM 101121101 48,361 1,337 2.84 6,794 12.26 0.0482
2015-02-10 2014-12-31 13F BOSTON PROPERTIES COM 101121101 47,024 -2,326 -4.71 6,052 5.93 0.0404
2014-11-05 2014-09-30 13F BOSTON PROPERTIES COM 101121101 49,350 33,674 214.81 5,713 208.31 0.0341
2014-08-01 2014-06-30 13F BOSTON PROPERTIES COM 101121101 15,676 -803 -4.87 1,853 -1.80 0.0105
2014-05-09 2014-03-31 13F BOSTON PROPERTIES COM 101121101 16,479 1,568 10.52 1,887 26.05 0.0111
2014-02-04 2013-12-31 13F BOSTON PROPERTIES COM 101121101 14,911 -391 -2.56 1,497 -8.50 0.0092
2013-10-29 2013-09-30 13F BOSTON PROPERTIES COM 101121101 15,302 169 1.12 1,636 2.51 0.0104
2013-10-02 2013-06-30 13F/A-1 BOSTON PROPERTIES COM 101121101 15,133 15,133 1,596 0.0109
2013-08-09 2013-06-30 13F BOSTON PROPERTIES COM 101121101 15,133 1,596 0.0109
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.