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CDP in the 13F filings

Corporate Office Properties Trust · CUSIP 22002T108

Sector · Real estateTheme · Real estate investment trusts
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
24
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 2 listed it in both
Shares listed
17,547,979
combined, among listed positions
Reported value
$512m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 14 buyers (opened or added shares) and 11 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -801,319.

Managers listing CDP in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

24 of 24 holders

ActionFiling
AllianceBernstein LP8,838,968$246m0.08%Trimmed-398,42615 May 2026 (the filing on sec.gov)
Two Sigma Investments LP2,244,180$69m0.06%Added+1,276,27815 May 2026 (the filing on sec.gov)
AQR Capital Management LLC1,411,200$43munder 0.1%Trimmed-195,63715 May 2026 (the filing on sec.gov)
Millennium Management LLC1,012,564$31munder 0.1%Added+751,65115 May 2026 (the filing on sec.gov)
Wellington Management Group LLP972,565$30munder 0.1%Added+107,40015 May 2026 (the filing on sec.gov)
Invesco Ltd714,979$22munder 0.1%Trimmed-53,26312 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC526,169$16munder 0.1%Trimmed-1,369,99215 May 2026 (the filing on sec.gov)
Jane Street Group LLC441,376$14munder 0.1%Added+192,13712 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC253,900$7.8munder 0.1%Added+113,81914 May 2026 (the filing on sec.gov)
Citadel Advisors LLC245,171$7.5munder 0.1%Added+15,68015 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)222,822$6.8munder 0.1%Trimmed-1,233,42815 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC152,764$4.7munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc115,262$3.5munder 0.1%Added+19,30515 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP96,633$3.0munder 0.1%Trimmed-200,77414 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP64,366$2.0munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd51,349$1.6munder 0.1%Held018 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP40,083$1.2munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Point72 Asset Management LP35,798$1.1munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC34,917$1.1munder 0.1%Trimmed-9,50927 Oct 2026 (the filing on sec.gov)
Squarepoint Ops LLC29,641$907kunder 0.1%Added+19,81115 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.21,097$646kunder 0.1%Trimmed-28,38215 May 2026 (the filing on sec.gov)
Winton Group Ltd11,816$362kunder 0.1%Newnew12 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC9,994$306kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Quantbot Technologies LP365$11kunder 0.1%Trimmed-10,29413 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
7 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

0358102014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
CDP by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20131$27mn.a.n.a.
Q4 20132$51mn.a.n.a.
Q1 20141$48mn.a.n.a.
Q2 20143$63mn.a.n.a.
Q3 20143$72mn.a.n.a.
Q4 20145$105mn.a.n.a.
Q1 20154$78mn.a.n.a.
Q2 20156$101mn.a.n.a.
Q3 20152$97mn.a.n.a.
Q4 20153$89mn.a.n.a.
Q1 20162$98mn.a.n.a.
Q2 20162$145mn.a.n.a.
Q3 20163$145mn.a.n.a.
Q4 20163$148mn.a.n.a.
Q1 20174$245mn.a.n.a.
Q2 20173$187mn.a.n.a.
Q3 20173$298mn.a.n.a.
Q4 20179$414mn.a.n.a.
Q1 20187$245mn.a.n.a.
Q2 20184$602mn.a.n.a.
Q3 20184$726mn.a.n.a.
Q4 20187$238mn.a.n.a.
Q1 20196$767mn.a.n.a.
Q2 20196$311mn.a.n.a.
Q3 20197$760mn.a.n.a.
Q4 20197$667mn.a.n.a.
Q1 20206$543mn.a.n.a.
Q2 20205$288mn.a.n.a.
Q3 20203$203mn.a.n.a.
Q4 20202$82mn.a.n.a.
Q1 20213$16mn.a.n.a.
Q4 20212$63mn.a.n.a.
Q1 20222$5.4mn.a.n.a.
Q2 20221$41mn.a.n.a.
Q3 20222$38mn.a.n.a.
Q4 20221$7.1mn.a.n.a.
Q1 20231$9.6mn.a.n.a.
Q2 20231$18mn.a.n.a.
Q3 20231$21mn.a.n.a.
Q4 20234$76m40
Q1 20243$59m12
Q2 20244$57m22
Q3 20247$107m61
Q4 20245$240m50
Q1 20255$270m50
Q2 20254$266m21
Q3 20255$307m23
Q4 20253$327m1213
Q1 20262$314m1411
Q2 20263$341m1412

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

CDP and WELL →CDP and EQIX →CDP and PLD →Choose a stock to compare with CDP →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own CDP, latest filings →Back to the 13F Explorer →