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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
30 Sep 2025
the date the book describes
Filed
14 Nov 2025
latest of these filings; the earliest 29 Oct 2025
Managers listing it
14
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q2 2025 and Q3 2025; 12 listed it in both
Shares listed
56,943,676
combined, among listed positions
Reported value
$4.8bn
combined, at the quarter end

Among the 95 comparable managers: 6 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing CSGP in Q3 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q2 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

14 of 14 holders

ActionFiling
Akre Capital Management LLC9,306,485$785m7.83%Trimmed-2,74713 Nov 2025 (the filing on sec.gov)
Baillie Gifford & Co8,241,642$695m0.52%Trimmed-298,72731 Oct 2025 (the filing on sec.gov)
MFS Investment Management7,406,788$625m0.19%Added+821,11129 Oct 2025 (the filing on sec.gov)
Polen Capital Management LLC6,380,909$538m1.75%Trimmed-542,91912 Nov 2025 (the filing on sec.gov)
Janus Henderson Group Ltd6,216,807$525m0.24%Added+2,180,98014 Nov 2025 (the filing on sec.gov)
Capital Research Global Investors4,993,854$421m0.08%Added+1,062,45213 Nov 2025 (the filing on sec.gov)
Invesco Ltd4,537,343$383m0.06%Added+98,87913 Nov 2025 (the filing on sec.gov)
Tiger Global Management LLC3,245,109$274m0.85%Held014 Nov 2025 (the filing on sec.gov)
Third Point LLC3,017,000$255m2.83%Trimmed-68,00014 Nov 2025 (the filing on sec.gov)
Viking Global Investors LP1,849,729$156m0.41%Trimmed-1,368,83914 Nov 2025 (the filing on sec.gov)
D. E. Shaw & Co.905,488$76munder 0.1%Trimmed-10,90014 Nov 2025 (the filing on sec.gov)
Marshall Wace LLP635,944$54m0.05%Addedn.a.13 Nov 2025 (the filing on sec.gov)
Acadian Asset Management LLC162,515$14munder 0.1%Newnew13 Nov 2025 (the filing on sec.gov)
Freestone Grove Partners LP44,063$3.7munder 0.1%Trimmed-137,81414 Nov 2025 (the filing on sec.gov)

Largest increases and reductions, by shares

Q2 2025 to Q3 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 (1)

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 →