Boston Properties, Inc.
MX ˙ BMV ˙ US1011211018
SecurityMX:BXP / Boston Properties, Inc.
InstitutionDnB Asset Management AS
Latest Disclosed Ownership8,275 shares
Latest Disclosed Value $ 429,473
DnB Asset Management AS reports 81.89% decrease in ownership of BXP / Boston Properties, Inc.

On May 14, 2026 - DnB Asset Management AS filed a 13F-HR form disclosing ownership of 8,275 shares of Boston Properties, Inc. (MX:BXP) valued at $429,473 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 45,683 shares of Boston Properties, Inc.. This represents a change in shares of -81.89% 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.

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)
2026-05-14 2026-03-31 13F BXP COM 101121101 8,275 -37,408 -81.89 429 -86.08 0.0015
2026-02-05 2025-12-31 13F BXP COM 101121101 45,683 -1,773 -3.74 3,083 -12.62 0.0108
2025-11-12 2025-09-30 13F BXP COM 101121101 47,456 3,700 8.46 3,528 19.48 0.0132
2025-08-12 2025-06-30 13F BXP COM 101121101 43,756 -1,511 -3.34 2,952 -2.93 0.0122
2025-05-15 2025-03-31 13F BXP COM 101121101 45,267 -1,876 -3.98 3,041 -13.24 0.0140
2025-02-12 2024-12-31 13F BPX COM 101121101 47,143 11,640 32.79 3,506 22.72 0.0152
2024-11-12 2024-09-30 13F BPX COM 101121101 35,503 748 2.15 2,857 33.52 0.0129
2024-07-05 2024-06-30 13F Boston Properties common 101121101 34,755 11,163 47.32 2,140 38.90 0.0102
2024-04-12 2024-03-31 13F Boston Properties common 101121101 23,592 -17,627 -42.76 1,541 -46.75 0.0080
2024-01-04 2023-12-31 13F Boston Properties common 101121101 41,219 -2,344 -5.38 2,892 11.62 0.0150
2023-10-13 2023-09-30 13F Boston Properties common 101121101 43,563 2,689 6.58 2,591 10.11 0.0155
2023-07-10 2023-06-30 13F/A-1 Boston Properties common 101121101 40,874 6,603 19.27 2,354 26.91 0.0135
2023-07-06 2023-06-30 13F Boston Properties common 101121101 40,874 6,603 2,354 0.0139
2023-04-20 2023-03-31 13F Boston Properties common 101121101 34,271 1,645 5.04 1,855 -15.88 0.0118
2023-01-12 2022-12-31 13F Boston Properties common 101121101 32,626 -1,103 -3.27 2,205 -12.82 0.0155
2022-10-11 2022-09-30 13F Boston Properties common 101121101 33,729 800 2.43 2,529 -13.72 0.0195
2022-07-08 2022-06-30 13F Boston Properties common 101121101 32,929 3,796 13.03 2,930 -21.91 0.0206
2022-04-08 2022-03-31 13F Boston Properties common 101121101 29,133 1,053 3.75 3,752 16.02 0.0223
2022-01-12 2021-12-31 13F Boston Properties common 101121101 28,080 3,229 12.99 3,234 20.13 0.0190
2021-10-15 2021-09-30 13F Boston Properties common 101121101 24,851 877 3.66 2,693 -2.00 0.0175
2021-07-06 2021-06-30 13F Boston Properties common 101121101 23,974 1,115 4.88 2,747 18.71 0.0182
2021-04-15 2021-03-31 13F Boston Properties common 101121101 22,859 1,624 7.65 2,315 15.30 0.0169
2021-01-19 2020-12-31 13F Boston Properties common 101121101 21,235 2,882 15.70 2,007 36.25 0.0176
2020-10-14 2020-09-30 13F Boston Properties common 101121101 18,353 0 0.00 1,474 -11.16 0.0157
2020-07-08 2020-06-30 13F Boston Properties common 101121101 18,353 1,267 7.42 1,659 5.27 0.0195
2020-04-17 2020-03-31 13F Boston Properties common 101121101 17,086 -3,037 -15.09 1,576 -43.22 0.0232
2020-01-13 2019-12-31 13F Boston Properties common 101121101 20,123 2,883 16.72 2,774 24.12 0.0273
2019-10-16 2019-09-30 13F Boston Properties common 101121101 17,240 1,686 10.84 2,235 11.42 0.0252
2019-07-08 2019-06-30 13F Boston Properties common 101121101 15,554 -1,587 -9.26 2,006 -12.55 0.0231
2019-04-11 2019-03-31 13F Boston Properties common 101121101 17,141 -1,634 -8.70 2,295 8.57 0.0262
2019-01-15 2018-12-31 13F Boston Properties common 101121101 18,775 -1,224 -6.12 2,113 -14.14 0.0274
2018-10-10 2018-09-30 13F Boston Properties common 101121101 19,999 1,259 6.72 2,462 4.72 0.0277
2018-07-06 2018-06-30 13F Boston Properties common 101121101 18,740 1,000 5.64 2,350 7.55 0.0277
2018-04-11 2018-03-31 13F Boston Properties common 101121101 17,740 1,100 6.61 2,186 1.02 0.0263
2018-01-10 2017-12-31 13F Boston Properties common 101121101 16,640 900 5.72 2,164 11.84 0.0261
2017-10-11 2017-09-30 13F Boston Properties common 101121101 15,740 0 0.00 1,934 -0.10 0.0257
2017-07-06 2017-06-30 13F Boston Properties common 101121101 15,740 -1,400 -8.17 1,936 -14.68 0.0282
2017-04-19 2017-03-31 13F Boston Properties common 101121101 17,140 3,300 23.84 2,270 30.40 0.0357
2017-01-17 2016-12-31 13F Boston Properties common 101121101 13,840 300 2.22 1,741 -5.69 0.0320
2016-10-28 2016-09-30 13F Boston Properties common 101121101 13,540 800 6.28 1,845 9.82 0.0363
2016-07-08 2016-06-30 13F Boston Properties common 101121101 12,740 400 3.24 1,680 7.14 0.0356
2016-04-11 2016-03-31 13F Boston Properties common 101121101 12,340 12,340 1,568 0.0328
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.