Brandywine Realty Trust
US ˙ NYSE ˙ US1053682035

SecurityBDN / Brandywine Realty Trust
InstitutionSei Investments Co
Latest Disclosed Ownership71,023 shares
Latest Disclosed Value $ 207,388
Sei Investments Co ownership in BDN / Brandywine Realty Trust

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 71,023 shares of Brandywine Realty Trust (US:BDN) valued at $207,387 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 86,320 shares of Brandywine Realty Trust. This represents a change in shares of -17.72% during the quarter. The current value of the position is $225,143 USD.

Sei Investments Co has a history of taking positions in derivatives of the underlying security (BDN) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

BDN / Brandywine Realty Trust Historical Put/Call Ratio
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)
2026-02-13 2025-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 71,023 -15,297 -17.72 207 -42.34 0.0002
2025-11-13 2025-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 86,320 58,240 207.41 360 199.17 0.0004
2025-08-14 2025-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 28,080 266 0.96 120 -3.23 0.0001
2025-05-14 2025-03-31 13F/A-1 BRANDYWINE RLTY TR SH BEN INT NEW 105368203 27,814 17,037 158.09 124 106.67 0.0002
2025-05-13 2025-03-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 10,777 0 58 0.0001
2025-02-11 2024-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 10,777 0 0.00 60 3.45 0.0001
2024-11-12 2024-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 10,777 0 0.00 59 20.83 0.0001
2024-08-13 2024-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 10,777 10,777 48 0.0001
2024-02-14 2023-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 0 -77,149 -100.00 0 -100.00
2023-11-14 2023-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 77,149 66,386 616.80 350 600.00 0.0006
2023-08-11 2023-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 10,763 464 4.51 50 4.17 0.0001
2023-05-12 2023-03-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 10,299 10,299 49 0.0001
2023-02-10 2022-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 0 -15,350 -100.00 0 -100.00
2022-11-14 2022-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 15,350 -527,846 -97.17 104 -98.01 0.0002
2022-08-15 2022-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 543,196 15,740 2.98 5,236 -29.78 0.0113
2022-05-13 2022-03-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 527,456 40,204 8.25 7,457 14.27 0.0150
2022-02-14 2021-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 487,252 85,812 21.38 6,526 21.01 0.0122
2021-11-12 2021-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 401,440 65,701 19.57 5,393 17.60 0.0113
2021-08-06 2021-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 335,739 75,843 29.18 4,586 36.69 0.0102
2021-05-12 2021-03-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 259,896 72,388 38.61 3,355 50.25 0.0085
2021-02-08 2020-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 187,508 72,346 62.82 2,233 87.49 0.0058
2020-12-04 2020-09-30 13F/A-1 BRANDYWINE RLTY TR SH BEN INT NEW 105368203 115,162 -14,032 -10.86 1,191 -15.53 0.0034
2020-11-06 2020-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 117,792 -11,402 1,218 2,932.6732
2020-08-17 2020-06-30 13F/A-1 BRANDYWINE RLTY TR SH BEN INT NEW 105368203 129,194 -66,763 -34.07 1,410 -29.54 0.0044
2020-08-11 2020-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 122,237 -73,720 1,835 4,977.5352
2020-05-14 2020-03-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 195,957 10,742 5.80 2,001 -31.54 0.0073
2020-02-06 2019-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 185,215 -78,597 -29.79 2,923 -27.36 0.0087
2019-11-12 2019-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 263,812 60,699 29.88 4,024 36.87 0.0103
2019-08-14 2019-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 203,113 104,563 106.10 2,940 88.82 0.0096
2019-05-15 2019-03-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 98,550 -3,619 -3.54 1,557 3.39 0.0052
2019-02-13 2018-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 102,169 27,044 36.00 1,506 27.09 0.0054
2018-11-08 2018-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 75,125 -58,734 -43.88 1,185 -47.54 0.0043
2018-08-03 2018-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 133,859 8,492 6.77 2,259 13.46 0.0077
2018-05-11 2018-03-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 125,367 -51,672 -29.19 1,991 -38.19 0.0076
2018-02-08 2017-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 177,039 83,979 90.24 3,221 97.97 0.0112
2017-11-06 2017-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 93,060 16,171 21.03 1,627 20.70 0.0058
2017-07-31 2017-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 76,889 3,271 4.44 1,348 12.80 0.0054
2017-05-05 2017-03-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 73,618 -25,722 -25.89 1,195 -27.13 0.0052
2017-02-02 2016-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 99,340 -34,936 -26.02 1,640 -21.79 0.0079
2016-11-04 2016-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 134,276 -14,446 -9.71 2,097 -16.05 0.0107
2016-08-11 2016-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 148,722 -11,415 -7.13 2,498 11.17 0.0150
2016-05-10 2016-03-31 13F/A-1 BRANDYWINE RLTY TR SH BEN INT NEW 105368203 160,137 8,877 5.87 2,247 8.76 0.0140
2016-02-03 2015-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 151,260 561 0.37 2,066 11.25 0.0126
2015-11-02 2015-09-30 13F/A-1 BRANDYWINE RLTY TR SH BEN INT NEW 105368203 150,699 -40,484 -21.18 1,857 -26.86 0.0170
2015-10-30 2015-09-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 150,699 1,858
2015-08-07 2015-06-30 13F/A-1 BRANDYWINE RLTY TR SH BEN INT NEW 105368203 191,183 -35,488 -15.66 2,539 -29.92 0.0230
2015-08-04 2015-06-30 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 191,183 -35,488 2,539 0.0230
2015-05-14 2015-03-31 13F/A-1 BRANDYWINE RLTY TR SH BEN INT NEW 105368203 226,671 12 0.01 3,623 0.00 0.0315
2015-05-01 2015-03-31 13F BOX PUT 105368203 226,671 226,671 3,623 0.0315
2015-02-10 2014-12-31 13F BRANDYWINE RLTY TR SH BEN INT NEW 105368203 226,659 226,659 3,623 0.0320
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-05-01 2015-03-31 13F BOX PUT 226,671 3,623 n/a n/a n/a
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.