Who owns COPT Defense Properties (CDP)
Which tracked institutional funds hold CDP, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CDP company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
89 tracked funds added or opened CDP while 48 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
CDP’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes CDP more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in CDP divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 319 tracked filers holding CDP, 156 increased or opened the position and 146 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in CDP between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 18
- VANGUARD PORTFOLIO MANAGEMENT LLC$363M
- VANGUARD CAPITAL MANAGEMENT LLC$155M
- VANGUARD FIDUCIARY TRUST CO$22M
- Alpha Wave Global, LP$13M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$5M
- Bayhunt Capital LLC$4M
Full exits 16
- VANGUARD GROUP INC$476M
- TWO SIGMA ADVISERS, LP$17M
- Clearbridge Investments, LLC$8M
- LASALLE INVESTMENT MANAGEMENT SECURITIES LLC$5M
- Greenland Capital Management LP$5M
- ALGERT GLOBAL LLC$5M
Largest adds
- DEUTSCHE BANK AG\$50M
- JPMORGAN CHASE & CO$43M
- TWO SIGMA INVESTMENTS, LP$42M
- MORGAN STANLEY$36M
- STATE STREET CORP$32M
- MILLENNIUM MANAGEMENT LLC$24M
Largest trims
- BALYASNY ASSET MANAGEMENT L.P.$37M
- FMR LLC$34M
- CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC$25M
- BlackRock, Inc.$24M
- Nuveen, LLC$13M
- ALLIANCEBERNSTEIN L.P.$11M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 19,915,482 | $725M | 16.1% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 11,859,067 | $363M | 8.1% | 2026-Q1 |
| STATE STREET CORP added | 6,871,138 | $252M | 5.6% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 8,838,968 | $246M | 5.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 5,053,885 | $155M | 3.4% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 4,856,140 | $150M | 3.3% | 2026-Q1 |
| EARNEST PARTNERS LLC trimmed | 4,523,741 | $138M | 3.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 3,266,276 | $100M | 2.2% | 2026-Q1 |
| WESTWOOD HOLDINGS GROUP INC trimmed | 3,245,746 | $99M | 2.2% | 2026-Q1 |
| Channing Capital Management, LLC added | 2,981,160 | $91M | 2.0% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 2,321,339 | $71M | 1.6% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 2,292,487 | $70M | 1.6% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 2,246,863 | $69M | 1.5% | 2026-Q1 |
| MORGAN STANLEY added | 2,223,500 | $68M | 1.5% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 1,720,245 | $63M | 1.4% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 1,575,072 | $57M | 1.3% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 1,756,410 | $54M | 1.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 1,753,659 | $54M | 1.2% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 1,682,296 | $51M | 1.1% | 2026-Q1 |
| GRS Advisors, LLC added | 1,650,055 | $50M | 1.1% | 2026-Q1 |
| NORTHERN TRUST CORP added | 1,606,360 | $49M | 1.1% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 1,296,926 | $47M | 1.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,460,146 | $45M | 1.0% | 2026-Q1 |
| Bank of New York Mellon Corp added | 1,317,391 | $40M | 0.9% | 2026-Q1 |
| Nuveen, LLC trimmed | 1,191,516 | $36M | 0.8% | 2026-Q1 |
| NORGES BANK trimmed | 922,648 | $34M | 0.7% | 2026-Q2 |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ trimmed | 966,850 | $30M | 0.7% | 2026-Q1 |
| FRONTIER CAPITAL MANAGEMENT CO LLC trimmed | 903,876 | $28M | 0.6% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 729,301 | $27M | 0.6% | 2026-Q2 |
| Invesco Ltd. added | 720,331 | $26M | 0.6% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 824,800 | $25M | 0.6% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 813,459 | $25M | 0.6% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 744,887 | $23M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 734,867 | $22M | 0.5% | 2026-Q1 |
| Legal & General Group Plc trimmed | 702,097 | $21M | 0.5% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 692,103 | $21M | 0.5% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 685,610 | $21M | 0.5% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 637,872 | $20M | 0.4% | 2026-Q1 |
| Leeward Investments, LLC - MA trimmed | 578,238 | $18M | 0.4% | 2026-Q1 |
| Retirement Systems of Alabama added | 574,996 | $18M | 0.4% | 2026-Q1 |
| Rockefeller Capital Management L.P. added | 545,818 | $17M | 0.4% | 2026-Q1 |
| NATIXIS ADVISORS, LLC added | 506,737 | $16M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 485,687 | $15M | 0.3% | 2026-Q1 |
| JONES FINANCIAL COMPANIES LLLP added | 481,591 | $15M | 0.3% | 2026-Q1 |
| State of Tennessee, Department of Treasury added | 456,070 | $14M | 0.3% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 455,649 | $14M | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 371,752 | $14M | 0.3% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 441,376 | $14M | 0.3% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 354,602 | $13M | 0.3% | 2026-Q2 |
| Alpha Wave Global, LP new | 415,118 | $13M | 0.3% | 2026-Q1 |
| BARCLAYS PLC trimmed | 409,368 | $13M | 0.3% | 2026-Q1 |
| FMR LLC added | 336,986 | $12M | 0.3% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 393,787 | $12M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 359,421 | $11M | 0.2% | 2026-Q1 |
| DAVIS SELECTED ADVISERS trimmed | 292,700 | $11M | 0.2% | 2026-Q2 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 327,833 | $10M | 0.2% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 326,631 | $10M | 0.2% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC added | 322,518 | $10M | 0.2% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 316,764 | $10M | 0.2% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 307,624 | $9M | 0.2% | 2026-Q1 |
| HSBC HOLDINGS PLC added | 266,785 | $8M | 0.2% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 259,233 | $8M | 0.2% | 2026-Q1 |
| CANADA LIFE ASSURANCE Co added | 250,155 | $8M | 0.2% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 245,171 | $8M | 0.2% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 228,079 | $7M | 0.2% | 2026-Q1 |
| UBS Group AG trimmed | 226,505 | $7M | 0.2% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 190,257 | $7M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 224,000 | $7M | 0.2% | 2026-Q1 |
| HRT FINANCIAL LP added | 223,374 | $7M | 0.2% | 2026-Q1 |
| Allianz Asset Management GmbH trimmed | 223,192 | $7M | 0.2% | 2026-Q1 |
| State of New Jersey Common Pension Fund D trimmed | 222,017 | $7M | 0.2% | 2026-Q1 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO trimmed | 220,381 | $7M | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 218,426 | $7M | 0.1% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 216,947 | $7M | 0.1% | 2026-Q1 |
| Hudson Bay Capital Management LP new | 175,000 | $6M | 0.1% | 2026-Q2 |
| Northwest & Ethical Investments L.P. | 188,377 | $6M | 0.1% | 2026-Q1 |
| Asset Management One Co., Ltd. trimmed | 181,583 | $6M | 0.1% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT CO LTD added | 175,820 | $5M | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 166,997 | $5M | 0.1% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 139,915 | $5M | 0.1% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 152,764 | $5M | 0.1% | 2026-Q1 |
| STRS OHIO trimmed | 145,200 | $4M | 0.1% | 2026-Q1 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM trimmed | 144,028 | $4M | 0.1% | 2026-Q1 |
| EASTERLY INVESTMENT PARTNERS LLC trimmed | 140,663 | $4M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 137,228 | $4M | 0.1% | 2026-Q1 |
| Zurcher Kantonalbank (Zurich Cantonalbank) added | 137,222 | $4M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC added | 17,127,858 | $476M | 10.6% | 2025-Q4 stale |
| Woodline Partners LP added | 729,014 | $20M | 0.4% | 2025-Q1 stale |
| TWO SIGMA ADVISERS, LP added | 627,800 | $17M | 0.4% | 2025-Q4 stale |
| JUPITER ASSET MANAGEMENT LTD trimmed | 576,016 | $16M | 0.4% | 2025-Q2 stale |
| Verition Fund Management LLC added | 319,898 | $9M | 0.2% | 2025-Q2 stale |
| Alyeska Investment Group, L.P. trimmed | 278,335 | $8M | 0.2% | 2025-Q3 stale |
| Clearbridge Investments, LLC trimmed | 289,180 | $8M | 0.2% | 2025-Q4 stale |
| GREAT LAKES ADVISORS, LLC trimmed | 237,161 | $7M | 0.1% | 2025-Q2 stale |
| CRAMER ROSENTHAL MCGLYNN LLC added | 180,088 | $5M | 0.1% | 2025-Q3 stale |
| LASALLE INVESTMENT MANAGEMENT SECURITIES LLC trimmed | 185,258 | $5M | 0.1% | 2025-Q4 stale |
| Greenland Capital Management LP added | 177,993 | $5M | 0.1% | 2025-Q4 stale |
| Corebridge Financial, Inc. trimmed | 178,633 | $5M | 0.1% | 2025-Q1 stale |
| ALGERT GLOBAL LLC added | 172,793 | $5M | 0.1% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC trimmed | 161,695 | $5M | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.