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CSGP in the 13F filings

Costar Group Inc · CUSIP 22160N109

Sector · Business and payment services
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 22 Jan 2026
Managers listing it
33
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 13 listed it in both
Shares listed
73,510,559
combined, among listed positions
Reported value
$4.9bn
combined, at the quarter end

Among the 92 comparable managers: 20 buyers (opened or added shares) and 14 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +9,370,834.

Managers listing CSGP in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

33 of 33 holders

ActionFiling
Invesco Ltd14,908,741$1.0bn0.09%Added+10,371,39819 Feb 2026 (the filing on sec.gov)
Baillie Gifford & Co12,933,185$870m0.72%Added+4,691,54323 Jan 2026 (the filing on sec.gov)
Akre Capital Management LLC9,617,805$647m7.09%Added+311,32013 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd7,473,380$502m0.23%Added+1,256,57317 Feb 2026 (the filing on sec.gov)
Capital Research Global Investors5,566,962$374m0.07%Added+573,10811 Feb 2026 (the filing on sec.gov)
Polen Capital Management LLC4,890,936$329m1.40%Trimmed-1,489,97312 Feb 2026 (the filing on sec.gov)
Third Point LLC3,165,000$213m2.93%Added+148,00017 Feb 2026 (the filing on sec.gov)
MFS Investment Management3,159,925$212m0.07%Trimmed-4,246,86322 Jan 2026 (the filing on sec.gov)
Tiger Global Management LLC2,259,109$152m0.51%Trimmed-986,00017 Feb 2026 (the filing on sec.gov)
Viking Global Investors LP1,442,582$97m0.26%Trimmed-407,14717 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,202,153$81munder 0.1%Trimmed-378,00117 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc1,198,832$81munder 0.1%Trimmed-65,33017 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.905,488$61munder 0.1%Held017 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC795,563$53m0.06%Added+784,26313 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC604,543$41munder 0.1%Trimmed-1,122,07517 Feb 2026 (the filing on sec.gov)
Millennium Management LLC601,975$40munder 0.1%Added+193,62017 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP422,173$28munder 0.1%Trimmed-42,65017 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP391,305$26munder 0.1%Trimmed-244,63913 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC369,352$25munder 0.1%Added+45,60917 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC237,376$16munder 0.1%Added+121,74512 Feb 2026 (the filing on sec.gov)
Man Group PLC225,253$15munder 0.1%Added+105,99417 Feb 2026 (the filing on sec.gov)
Tudor Investment Corp205,000$14munder 0.1%Newnew17 Feb 2026 (the filing on sec.gov)
Freestone Grove Partners LP201,205$14m0.10%Added+157,14217 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP194,684$13munder 0.1%Added+69,64917 Feb 2026 (the filing on sec.gov)
Neuberger Berman Group LLC169,667$11munder 0.1%Trimmed-252,12627 Oct 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, 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 (4)

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.
13 in Q3 2024 to 15 in Q2 2026

Tracked managers listing it, at least.

01020302014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
CSGP by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20136$486mn.a.n.a.
Q3 20136$610mn.a.n.a.
Q4 20137$827mn.a.n.a.
Q1 201411$885mn.a.n.a.
Q2 20148$740mn.a.n.a.
Q3 20147$618mn.a.n.a.
Q4 20148$815mn.a.n.a.
Q1 20159$1.2bnn.a.n.a.
Q2 20158$1.2bnn.a.n.a.
Q3 20157$1.1bnn.a.n.a.
Q4 20158$1.3bnn.a.n.a.
Q1 201610$1.1bnn.a.n.a.
Q2 20169$1.1bnn.a.n.a.
Q3 201610$1.1bnn.a.n.a.
Q4 20169$827mn.a.n.a.
Q1 20178$1.1bnn.a.n.a.
Q2 201713$2.3bnn.a.n.a.
Q3 201715$2.8bnn.a.n.a.
Q4 201716$3.2bnn.a.n.a.
Q1 201814$3.7bnn.a.n.a.
Q2 201813$3.9bnn.a.n.a.
Q3 201819$4.0bnn.a.n.a.
Q4 201816$2.8bnn.a.n.a.
Q1 201918$3.7bnn.a.n.a.
Q2 201917$4.3bnn.a.n.a.
Q3 201926$4.9bnn.a.n.a.
Q4 201919$5.0bnn.a.n.a.
Q1 202020$5.4bnn.a.n.a.
Q2 202018$7.4bnn.a.n.a.
Q3 202020$8.8bnn.a.n.a.
Q4 202021$9.3bnn.a.n.a.
Q1 202119$8.6bnn.a.n.a.
Q2 202121$8.4bnn.a.n.a.
Q3 202115$8.4bnn.a.n.a.
Q4 202119$6.9bnn.a.n.a.
Q1 202218$5.0bnn.a.n.a.
Q2 202223$5.0bnn.a.n.a.
Q3 202220$5.0bnn.a.n.a.
Q4 202222$5.3bnn.a.n.a.
Q1 202319$4.3bnn.a.n.a.
Q2 202315$5.5bnn.a.n.a.
Q3 202316$4.6bnn.a.n.a.
Q4 202313$5.1bn67
Q1 202413$5.7bn66
Q2 202415$4.1bn123
Q3 202413$3.8bn84
Q4 202415$3.3bn105
Q1 202516$3.8bn114
Q2 202516$4.5bn97
Q3 202514$4.8bn69
Q4 202513$4.5bn2014
Q1 202614$3.0bn2318
Q2 202615$1.8bn2612

Compare with…

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

CSGP and V →CSGP and MA →CSGP and MCO →Choose a stock to compare with CSGP →

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 CSGP, latest filings →Back to the 13F Explorer →