Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionCi Investments Inc.
Latest Disclosed Ownership111,222 shares
Latest Disclosed Value $ 5,772,422
Ci Investments Inc. reports 3.95% decrease in ownership of BXP / Boston Properties, Inc.

On May 13, 2026 - Ci Investments Inc. filed a 13F-HR form disclosing ownership of 111,222 shares of Boston Properties, Inc. (US:BXP) valued at $5,772,422 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 115,796 shares of Boston Properties, Inc.. This represents a change in shares of -3.95% during the quarter. The current value of the position is $6,901,325 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)
2026-05-13 2026-03-31 13F BXP COM 101121101 111,222 -4,574 -3.95 5,772 -26.12 0.0280
2026-02-12 2025-12-31 13F BXP COM 101121101 115,796 -1,816 -1.54 7,814 97,562.50 0.0342
2025-11-12 2025-09-30 13F BXP COM 101121101 117,612 -1,003 -0.85 9 0.00 0.0318
2025-08-12 2025-06-30 13F BXP COM 101121101 118,615 -2,965 -2.44 8 0.00 0.0300
2025-05-13 2025-03-31 13F BXP COM 101121101 121,580 -966 -0.79 8 -11.11 0.0344
2025-02-12 2024-12-31 13F BXP COM 101121101 122,546 -15,070 -10.95 9 -18.18 0.0343
2024-11-12 2024-09-30 13F BXP COM 101121101 137,616 -4,741 -3.33 11 37.50 0.0421
2024-08-12 2024-06-30 13F BOSTON PROPERTIES COM 101121101 142,357 455 0.32 9 -11.11 0.0345
2024-05-13 2024-03-31 13F BOSTON PROPERTIES COM 101121101 141,902 -3,135 -2.16 9 -10.00 0.0368
2024-02-12 2023-12-31 13F BOSTON PROPERTIES COM 101121101 145,037 -20,569 -12.42 10 11.11 0.0526
2023-11-13 2023-09-30 13F BOSTON PROPERTIES COM 101121101 165,606 -32,407 -16.37 10 -18.18 0.0550
2023-08-11 2023-06-30 13F BOSTON PROPERTIES COM 101121101 198,013 2,422 1.24 11 10.00 0.0575
2023-05-12 2023-03-31 13F BOSTON PROPERTIES COM 101121101 195,591 189,788 3,270.52 11 0.0533
2023-02-10 2022-12-31 13F BOSTON PROPERTIES COM 101121101 5,803 979 20.29 0 -100.00 0.0020
2022-11-14 2022-09-30 13F BOSTON PROPERTIES COM 101121101 4,824 -65 -1.33 362 -16.78 0.0019
2022-08-12 2022-06-30 13F BOSTON PROPERTIES COM 101121101 4,889 -91 -1.83 435 -32.14 0.0020
2022-05-12 2022-03-31 13F BOSTON PROPERTIES COM 101121101 4,980 67 1.36 641 13.25 0.0024
2022-02-11 2021-12-31 13F BOSTON PROPERTIES COM 101121101 4,913 -349 -6.63 566 -0.70 0.0020
2021-11-12 2021-09-30 13F BOSTON PROPERTIES COM 101121101 5,262 -1,118 -17.52 570 -22.02 0.0021
2021-08-13 2021-06-30 13F BOSTON PROPERTIES COM 101121101 6,380 594 10.27 731 24.74 0.0027
2021-05-13 2021-03-31 13F BOSTON PROPERTIES COM 101121101 5,786 -468 -7.48 586 -0.85 0.0025
2021-02-09 2020-12-31 13F BOSTON PROPERTIES COM 101121101 6,254 733 13.28 591 33.41 0.0026
2020-11-09 2020-09-30 13F BOSTON PROPERTIES COM 101121101 5,521 3,695 202.35 443 168.48 0.0022
2020-08-07 2020-06-30 13F BOSTON PROPERTIES COM 101121101 1,826 -798 -30.41 165 -31.82 0.0009
2020-08-07 2020-03-31 13F BOSTON PROPERTIES COM 101121101 2,624 -500 -16.01 242 -43.85 0.0015
2020-02-11 2019-12-31 13F BOSTON PROPERTIES COM 101121101 3,124 -3,093 -49.75 431 -46.53 0.0022
2019-11-08 2019-09-30 13F BOSTON PROPERTIES COM 101121101 6,217 1,136 22.36 806 23.05 0.0042
2019-08-12 2019-06-30 13F BOSTON PROPERTIES COM 101121101 5,081 45 0.89 655 -2.82 0.0036
2019-05-15 2019-03-31 13F BOSTON PROPERTIES COM 101121101 5,036 0 0.00 674 18.87 0.0038
2019-02-15 2018-12-31 13F BOSTON PROPERTIES COM 101121101 5,036 0 0.00 567 -8.55 0.0037
2018-11-09 2018-09-30 13F BOSTON PROPERTIES COM 101121101 5,036 -141,214 -96.56 620 -96.62 0.0046
2018-08-14 2018-06-30 13F BOSTON PROPERTIES COM 101121101 146,250 146,250 18,343 0.1441
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.