Boston Properties, Inc.
US ˙ NYSE ˙ US1011211018

SecurityBXP / Boston Properties, Inc.
InstitutionSecurian Asset Management, Inc
Latest Disclosed Ownership3,933 shares
Latest Disclosed Value $ 204,123
Securian Asset Management, Inc ownership in BXP / Boston Properties, Inc.

On May 1, 2026 - Securian Asset Management, Inc filed a 13F-HR form disclosing ownership of 3,933 shares of Boston Properties, Inc. (US:BXP) valued at $204,123 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 3,933 shares of Boston Properties, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $244,043 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)
2026-05-01 2026-03-31 13F BXP COM 101121101 3,933 0 0.00 204 -23.02 0.0081
2026-02-04 2025-12-31 13F BXP COM 101121101 3,933 -3,119 -44.23 265 -49.43 0.0101
2025-10-23 2025-09-30 13F BXP COM 101121101 7,052 -506 -6.69 524 2.95 0.0139
2025-07-30 2025-06-30 13F BXP COM 101121101 7,558 0 0.00 510 0.39 0.0145
2025-05-01 2025-03-31 13F BXP COM 101121101 7,558 -200 -2.58 508 -11.98 0.0154
2025-02-10 2024-12-31 13F BXP COM 101121101 7,758 -188 -2.37 577 -9.86 0.0168
2024-11-13 2024-09-30 13F BOSTON PROPERTIES COM 101121101 7,946 -300 -3.64 639 26.04 0.0184
2024-07-15 2024-06-30 13F BOSTON PROPERTIES COM 101121101 8,246 -200 -2.37 508 -7.99 0.0148
2024-04-26 2024-03-31 13F BOSTON PROPERTIES COM 101121101 8,446 -681 -7.46 552 -13.91 0.0162
2024-02-08 2023-12-31 13F BOSTON PROPERTIES COM 101121101 9,127 -1,133 -11.04 640 4.92 0.0182
2023-10-30 2023-09-30 13F BOSTON PROPERTIES COM 101121101 10,260 -1,262 -10.95 610 -7.99 0.0182
2023-08-07 2023-06-30 13F BOSTON PROPERTIES COM 101121101 11,522 -200 -1.71 664 4.57 0.0170
2023-04-27 2023-03-31 13F BOSTON PROPERTIES COM 101121101 11,722 128 1.10 634 -19.03 0.0169
2023-02-03 2022-12-31 13F BOSTON PROPERTIES COM 101121101 11,594 105 0.91 784 0.0219
2022-10-28 2022-09-30 13F BOSTON PROPERTIES COM 101121101 11,489 -54,070 -82.48 1 -100.00 0.0257
2022-08-04 2022-06-30 13F BOSTON PROPERTIES COM 101121101 65,559 -59,054 -47.39 6 -68.75 0.1397
2022-05-03 2022-03-31 13F BOSTON PROPERTIES COM 101121101 124,613 23,600 23.36 16 45.45 0.3134
2022-02-10 2021-12-31 13F BOSTON PROPERTIES IN COM 101121101 101,013 -31,350 -23.68 12 -21.43 0.2147
2021-11-08 2021-09-30 13F BOSTON PROPERTIES IN COM 101121101 132,363 -11,600 -8.06 14 -12.50 0.2947
2021-08-10 2021-06-30 13F BOSTON PROPERTIES IN COM 101121101 143,963 -11,327 -7.29 16 6.67 0.3352
2021-05-10 2021-03-31 13F BOSTON PROPERTIES IN COM 101121101 155,290 16,823 12.15 16 15.38 0.3416
2021-02-08 2020-12-31 13F BOSTON PROPERTIES IN COM 101121101 138,467 -557 -0.40 13 -99.88 0.2960
2020-11-04 2020-09-30 13F Boston Properties REIT 101121101 139,024 -55,150 -28.40 11,163 -36.39 0.2706
2020-08-06 2020-06-30 13F Boston Properties REIT 101121101 194,174 15,390 8.61 17,550 6.43 0.4490
2020-05-07 2020-03-31 13F Boston Properties REIT 101121101 178,784 16,605 10.24 16,490 -26.25 0.4653
2020-02-04 2019-12-31 13F Boston Properties REIT 101121101 162,179 11,543 7.66 22,359 14.48 0.4935
2019-11-12 2019-09-30 13F Boston Properties REIT 101121101 150,636 -118,046 -43.94 19,531 57,344.12 0.4478
2019-08-05 2019-06-30 13F Boston Properties REIT 101121101 268,682 13,948 5.48 35 0.00 0.8030
2019-04-26 2019-03-31 13F Boston Properties REIT 101121101 254,734 -2,373 -0.92 34 21.43 0.8132
2019-02-04 2018-12-31 13F Boston Properties REIT 101121101 257,107 -12,009 -4.46 29 -15.15 0.7767
2018-10-26 2018-09-30 13F Boston Properties REIT 101121101 269,116 169,638 170.53 33 175.00 0.7868
2018-08-09 2018-06-30 13F Boston Properties REIT 101121101 99,478 -11,600 -10.44 12 -7.69 0.3093
2018-04-30 2018-03-31 13F Boston Properties REIT 101121101 111,078 -24,100 -17.83 14 -23.53 0.3510
2018-02-05 2017-12-31 13F Boston Properties REIT 101121101 135,178 39,485 41.26 18 54.55 0.4343
2017-11-03 2017-09-30 13F Boston Properties REIT 101121101 95,693 -61,974 -39.31 12 -42.11 0.3052
2017-08-14 2017-06-30 13F Boston Properties REIT 101121101 157,667 -69,057 -30.46 19 -36.67 0.5106
2017-05-11 2017-03-31 13F Boston Properties REIT 101121101 226,724 17,004 8.11 30 15.38 0.8035
2017-02-10 2016-12-31 13F Boston Properties REIT 101121101 209,720 -15,496 -6.88 26 -13.33 0.7057
2016-11-14 2016-09-30 13F Boston Properties REIT 101121101 225,216 -62,748 -21.79 31 -18.92 0.8305
2016-08-10 2016-06-30 13F Boston Properties REIT 101121101 287,964 -60,691 -17.41 38 -15.91 1.0620
2016-11-08 2016-03-31 13F/A-1 Boston Properties REIT 101121101 348,655 28,603 8.94 44 10.00 1.2761
2016-05-09 2016-03-31 13F Boston Properties REIT 101121101 348,655 44,307
2016-11-08 2015-12-31 13F/A-1 Boston Properties REIT 101121101 320,052 -63,592 -16.58 41 -11.11 1.2121
2016-02-10 2015-12-31 13F Boston Properties REIT 101121101 320,052 40,819
2016-11-08 2015-09-30 13F/A-1 Boston Properties REIT 101121101 383,644 -11,500 -2.91 45 -4.26 1.4917
2015-11-12 2015-09-30 13F Boston Properties REIT 101121101 383,644 45,423
2016-11-08 2015-06-30 13F/A-2 Boston Properties REIT 101121101 395,144 -67,834 -14.65 48 -27.69 1.4936
2015-08-10 2015-06-30 13F Boston Properties REIT 101121101 395,144 47,828
2016-11-08 2015-03-31 13F/A-2 Boston Properties REIT 101121101 462,978 36,511 8.56 65 20.37 1.8969
2015-04-27 2015-03-31 13F Boston Properties REIT 101121101 462,978 65,039
2016-11-08 2014-12-31 13F/A-2 Boston Properties REIT 101121101 426,467 31,363 7.94 55 20.00 1.6981
2016-11-08 2014-09-30 13F/A-2 Boston Properties REIT 101121101 395,104 51,200 14.89 46 12.50 1.5509
2014-10-28 2014-09-30 13F Boston Properties REIT 101121101 395,104 45,737
2016-11-08 2014-06-30 13F/A-2 Boston Properties REIT 101121101 343,904 -40,600 -10.56 41 -9.09 1.3765
2014-08-01 2014-06-30 13F Boston Properties REIT 101121101 343,904 40,643
2016-11-08 2014-03-31 13F/A-2 Boston Properties REIT 101121101 384,504 52,914 15.96 44 33.33 1.5949
2014-05-07 2014-03-31 13F Boston Properties REIT 101121101 384,504 44,037,243
2016-11-08 2013-12-31 13F/A-2 Boston Properties REIT 101121101 331,590 19,622 6.29 33 0.00 1.2580
2014-01-23 2013-12-31 13F Boston Properties REIT 101121101 331,590 33,281,688
2016-11-08 2013-09-30 13F/A-2 Boston Properties REIT 101121101 311,968 -12,900 -3.97 33 -2.94 1.3409
2013-11-08 2013-09-30 13F Boston Properties REIT 101121101 311,968 33,349
2016-11-08 2013-06-30 13F/A-2 Boston Properties REIT 101121101 324,868 13,006 4.17 34 9.68 1.3903
2013-08-13 2013-06-30 13F Boston Properties REIT 101121101 324,868 34,264
2016-11-08 2013-03-31 13F/A-2 Boston Properties REIT 101121101 311,862 23,906 8.30 32 3.33 1.2869
2016-11-08 2012-12-31 13F/A-2 Boston Properties REIT 101121101 287,956 18,268 6.77 30 3.45 1.3572
2016-11-08 2012-09-30 13F/A-2 Boston Properties REIT 101121101 269,688 5,800 2.20 30 3.57 1.3322
2016-11-08 2012-06-30 13F/A-2 Boston Properties REIT 101121101 263,888 -8,100 -2.98 29 0.00 1.3439
2016-11-08 2012-03-31 13F/A-2 Boston Properties REIT 101121101 271,988 -20,922 -7.14 29 -3.45 1.2873
2016-11-08 2011-12-31 13F/A-2 Boston Properties REIT 101121101 292,910 10,881 3.86 29 16.00 1.4885
2016-11-08 2011-09-30 13F/A-2 Boston Properties REIT 101121101 282,029 282,029 25 1.4414
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.