COPT Defense Properties
US ˙ NYSE

SecurityCDP / COPT Defense Properties
InstitutionAr Asset Management Inc
Latest Disclosed Ownership9,100 shares
Latest Disclosed Value $ 278
Ar Asset Management Inc ownership in CDP / COPT Defense Properties

On May 13, 2026 - Ar Asset Management Inc filed a 13F-HR form disclosing ownership of 9,100 shares of COPT Defense Properties (US:CDP) valued at $278,460 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 9,100 shares of COPT Defense Properties. The current value of the position is $284,921 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.

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)
2026-05-13 2026-03-31 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0537
2026-02-09 2025-12-31 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0517
2025-11-12 2025-09-30 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0556
2025-08-06 2025-06-30 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0558
2025-05-13 2025-03-31 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0563
2025-02-03 2024-12-31 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0639
2024-11-13 2024-09-30 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0613
2024-08-12 2024-06-30 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0549
2024-05-10 2024-03-31 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0536
2024-02-07 2023-12-31 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0612
2023-11-06 2023-09-30 13F COPT DEFENSE PROP REIT(FRM COR COM 22002T108 9,100 0 0.00 0 0.0609
2023-08-08 2023-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 0 0.0580
2023-05-09 2023-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 0 0.0581
2023-02-01 2022-12-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 0 -100.00 0.0670
2022-10-31 2022-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 211 -11.34 0.0632
2022-08-03 2022-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 238 -8.46 0.0673
2022-05-10 2022-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 260 1.96 0.0657
2022-02-07 2021-12-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 255 3.66 0.0647
2021-11-04 2021-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 246 -3.53 0.0689
2021-08-04 2021-06-30 13F Corporate Office Property Trus COM 22002T108 9,100 0 0.00 255 6.25 0.0713
2021-04-30 2021-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 240 1.27 0.0717
2021-02-10 2020-12-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 237 9.72 0.0764
2020-11-05 2020-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 216 -6.49 0.0759
2020-08-03 2020-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 231 14.93 0.0876
2020-05-06 2020-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 201 -24.72 0.0828
2020-02-12 2019-12-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 267 -1.48 0.0894
2019-11-05 2019-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 271 12.92 0.0956
2019-08-02 2019-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 240 -3.23 0.0869
2019-05-10 2019-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 9,100 248 0.0929
2019-02-08 2018-12-31 13F/A-1 CORPORATE OFFICE PROPERTY TRUS COM 22002T108 0 -9,100 -100.00 0 -100.00
2018-11-09 2018-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 271 2.65 0.0997
2018-08-03 2018-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 264 12.34 0.1026
2018-05-08 2018-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 235 -11.65 0.0946
2018-02-09 2017-12-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 266 -11.04 0.1024
2017-11-03 2017-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 299 -6.27 0.1185
2017-08-07 2017-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 319 5.98 0.1296
2017-05-10 2017-03-31 13F/A-1 CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 301 5.99 0.1245
2017-05-10 2017-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 301
2017-02-13 2016-12-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 284 10.08 0.1212
2016-11-04 2016-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 258 -4.09 0.1115
2016-08-30 2016-06-30 13F/A-1 CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 269 12.55 0.1129
2016-08-05 2016-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 269
2016-08-30 2016-03-31 13F/A-1 CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 9,100 0.00 239 0.1039
2016-05-06 2016-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 239
2015-11-06 2015-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 0 -9,100 -100.00 0 -100.00
2015-08-10 2015-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 214 -19.85 0.0875
2015-05-12 2015-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 267 3.49 0.1070
2015-02-13 2014-12-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 258 10.26 0.1040
2014-11-10 2014-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 234 -7.51 0.0950
2014-08-06 2014-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 253 4.55 0.1015
2014-05-09 2014-03-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 242 12.04 0.1014
2014-02-10 2013-12-31 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 216 2.86 0.0916
2013-11-12 2013-09-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 0 0.00 210 -9.48 0.0930
2013-08-14 2013-06-30 13F CORPORATE OFFICE PROPERTY TRUS COM 22002T108 9,100 9,100 232 0.1039
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.