COPT Defense Properties
US ˙ NYSE

SecurityCDP / COPT Defense Properties
InstitutionChanning Capital Management, LLC
Latest Disclosed Ownership2,981,160 shares
Latest Disclosed Value $ 91,223,496
Channing Capital Management, LLC reports 4.59% increase in ownership of CDP / COPT Defense Properties

On May 13, 2026 - Channing Capital Management, LLC filed a 13F-HR form disclosing ownership of 2,981,160 shares of COPT Defense Properties (US:CDP) valued at $91,223,496 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,850,460 shares of COPT Defense Properties. This represents a change in shares of 4.59% during the quarter. The current value of the position is $97,334,874 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 COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 2,981,160 130,700 4.59 91,223 15.12 2.3360
2026-02-13 2025-12-31 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 2,850,460 -63,136 -2.17 79,243 -6.41 2.0382
2025-11-10 2025-09-30 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 2,913,596 506,593 21.05 84,669 27.54 2.2295
2025-08-13 2025-06-30 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 2,407,003 -595,796 -19.84 66,385 -18.93 1.8458
2025-05-14 2025-03-31 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 3,002,799 -111,649 -3.58 81,886 -15.05 2.4725
2025-02-07 2024-12-31 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 3,114,448 -318,935 -9.29 96,392 -7.43 2.5702
2024-11-13 2024-09-30 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 3,433,383 -291,613 -7.83 104,135 11.69 2.6633
2024-08-14 2024-06-30 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 3,724,996 837,305 29.00 93,237 33.59 2.5580
2024-05-15 2024-03-31 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 2,887,691 566,517 24.41 69,795 17.32 1.8723
2024-02-06 2023-12-31 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 2,321,174 -712,501 -23.49 59,492 -17.71 1.7556
2023-11-13 2023-09-30 13F COPT DEFENSE PROPERTIES SHS BEN INT 22002T108 3,033,675 -24,217 -0.79 72,292 -0.46 2.3833
2023-08-11 2023-06-30 13F CORPORATE OFFICE PROPERTIES TR COM 22002T108 3,057,892 -104,971 -3.32 72,625 -3.16 2.2305
2023-05-09 2023-03-31 13F CORPORATE OFFICE PROPERTIES TR COM 22002T108 3,162,863 733,079 30.17 74,991 18.98 2.4121
2023-02-14 2022-12-31 13F CORPORATE OFFICE PROPERTIES TR COM 22002T108 2,429,784 -22,482 -0.92 63,029 10.64 2.0039
2022-11-08 2022-09-30 13F CORPORATE OFFICE PROPERTIES COM 22002T108 2,452,266 -511,564 -17.26 56,966 -26.61 1.9697
2022-08-11 2022-06-30 13F CORPORATE OFFICE PROPERTIES COM 22002T108 2,963,830 421,963 16.60 77,623 7.00 2.5353
2022-05-12 2022-03-31 13F CORPORATE OFFICE PROPERTIES COM 22002T108 2,541,867 314,644 14.13 72,545 16.45 2.1396
2022-02-11 2021-12-31 13F CORPORATE OFFICE PROPERTIES COM 22002T108 2,227,223 121,826 5.79 62,295 9.67 1.7646
2021-11-12 2021-09-30 13F CORPORATE OFFICE PROPERTIES COM 22002T108 2,105,397 585,450 38.52 56,804 33.52 1.7653
2021-08-16 2021-06-30 13F CORPORATE OFFICE PROPERTIES COM 22002T108 1,519,947 887,713 140.41 42,543 155.56 1.4022
2021-05-14 2021-03-31 13F CORPORATE OFFICE PROPERTIES COM 22002T108 632,234 -1,145,634 -64.44 16,647 -64.10 0.5682
2021-03-03 2020-12-31 13F/A-1 CORPORATE OFFICE PROPERTIES COM 22002T108 1,777,868 573,621 47.63 46,367 62.32 1.8882
2021-02-11 2020-12-31 13F CORPORATE OFFICE PROPERTIES COM 22002T108 1,777,868 573,621 46,367 1,888,194.7007
2020-11-13 2020-09-30 13F CORPORATE OFFICE PROPERTIES COM 22002T108 1,204,247 -186,500 -13.41 28,565 -18.95 1.5504
2020-08-14 2020-06-30 13F CORPORATE OFFICE PROPERTIES COM 22002T108 1,390,747 50,925 3.80 35,242 18.86 2.0239
2020-05-13 2020-03-31 13F CORPORATE OFFICE PROPERTIES COM 22002T108 1,339,822 283,279 26.81 29,650 -4.48 2.0940
2020-02-12 2019-12-31 13F CORPORATE OFFICE PROPERTIES COM 22002T108 1,056,543 -515,441 -32.79 31,041 -33.69 1.4368
2019-11-12 2019-09-30 13F CORPORATE OFFICE PROPERTIES COM 22002T108 1,571,984 -217,724 -12.17 46,814 -0.81 2.1661
2019-08-14 2019-06-30 13F CORPORATE OFFICE PROPERTIES COM 22002T108 1,789,708 -487,732 -21.42 47,195 -24.09 2.1920
2019-05-14 2019-03-31 13F CORPORATE OFFICE PROPERTIES COM 22002T108 2,277,440 -86,894 -3.68 62,174 25.04 2.8684
2019-02-12 2018-12-31 13F CORPORATE OFFICE PROPERTIES COM 22002T108 2,364,334 -16,050 -0.67 49,722 -29.98 2.4917
2018-11-13 2018-09-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 2,380,384 4,314 0.18 71,007 3.08 2.5571
2018-07-20 2018-06-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 2,376,070 -45,115 -1.86 68,883 10.14 2.4350
2018-04-24 2018-03-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 2,421,185 238,607 10.93 62,543 -1.85 2.1904
2018-02-13 2017-12-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 2,182,578 249,115 12.88 63,725 0.39 2.1490
2017-10-31 2017-09-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,933,463 63,902 3.42 63,476 -3.08 2.3874
2017-07-27 2017-06-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,869,561 -82,531 -4.23 65,491 1.36 2.5605
2017-05-01 2017-03-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,952,092 -23,549 -1.19 64,614 4.76 2.3591
2017-01-30 2016-12-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,975,641 85,993 4.55 61,680 15.13 2.1894
2016-10-31 2016-09-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,889,648 -156,017 -7.63 53,572 -11.44 2.1307
2016-08-01 2016-06-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 2,045,665 -314,684 -13.33 60,490 -2.33 2.5346
2016-04-27 2016-03-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 2,360,349 45,678 1.97 61,936 22.58 2.7580
2016-01-29 2015-12-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 2,314,671 612,683 36.00 50,529 41.17 2.2413
2015-10-28 2015-09-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,701,988 158,834 10.29 35,793 -1.47 1.7454
2015-07-24 2015-06-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,543,154 16,663 1.09 36,326 -19.00 1.6195
2015-04-23 2015-03-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,526,491 1,526,491 0.00 44,848 2.0417
2015-01-29 2014-12-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 0 -1,154,106 -100.00 0 -100.00
2014-10-21 2014-09-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,154,106 142,215 14.05 29,684 5.48 1.7874
2014-07-22 2014-06-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 1,011,891 67,561 7.15 28,141 11.86 1.6675
2014-04-25 2014-03-31 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 944,330 198,838 26.67 25,157 42.44 1.6072
2014-01-24 2013-12-31 13F CORPORATE OFFICE PPTYS TR COM 22002T108 745,492 47,885 6.86 17,661 9.59 1.1585
2013-10-22 2013-09-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 697,607 141,757 25.50 16,115 13.69 1.1850
2013-07-23 2013-06-30 13F CORPORATE OFFICE PPTYS TR COM COM 22002T108 555,850 555,850 14,174 1.2747
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.