CSGP

Costar Group Inc
IndustrialsUSCUSIP 22160N109◍ Confluence graph
Tracked 13F Holders
665
-281 QoQ
13F Value (tracked)
$13.5B
Insider Net · 180d
$4.8M
1↑ 2↓
Recent Filings
15
Smart-money sentimentBullish
BearishBullish
13F funds (latest Q)34 adding · 21 trimming
Insider net (180d)+$4.8M

Who owns CSGP?

665 tracked 13F filers

665 tracked 13F filers disclose a position in CSGP as of the latest SEC 13F filings, a combined $13.5B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
1 source-reported value row is withheld because the reported units do not agree with same-security peers. Share counts remain visible and unchanged.
#FundPosition valueSharesLast moveAs ofHistory
1VANGUARD PORTFOLIO MANAGEMENT LLC
$1.5B
38.2M
First observed position
No prior filed position
Q1 2026
2BlackRock, Inc.
$1.4B
33.8M
−0.5%
Reduced · −162K sh
Q1 2026
3VANGUARD CAPITAL MANAGEMENT LLC
$1.1B
27.4M
First observed position
No prior filed position
Q1 2026
4STATE STREET CORP
$521.4M
18.4M
−1.3%
Reduced · −240K sh
Q2 2026
5PRINCIPAL FINANCIAL GROUP INC
$713.9M
17.7M
+0.7%
Added · +130K sh
Q1 2026
6BAILLIE GIFFORD & CO
$549.1M
13.6M
+5.2%
Added · +678K sh
Q1 2026
7GEODE CAPITAL MANAGEMENT, LLC
$343.3M
12.2M
−2.3%
Reduced · −282K sh
Q2 2026
8AKRE CAPITAL MANAGEMENT LLC
$331.3M
11.7M
+13%
Added · +1.4M sh
Q2 2026
9GOLDMAN SACHS GROUP INC
$373.0M
9.2M
+146%
Added · +5.5M sh
Q1 2026
10POLEN CAPITAL MANAGEMENT LLC
$248.1M
8.8M
−30%
Reduced · −3.8M sh
Q2 2026
11Janus Henderson Group Ltd.
$311.6M
7.7M
+3.4%
Added · +251K sh
Q1 2026
12NORGES BANK
$476.8M
7.1M
+34%
Added · +1.8M sh
Q4 2025
13D. E. Shaw & Co., Inc.
$238.4M
5.9M
+553%
Added · +5.0M sh
Q1 2026
14MORGAN STANLEY
$218.3M
5.4M
+2.3%
Added · +121K sh
Q1 2026
15Meritage Group LP
$152.8M
5.4M
+62%
Added · +2.1M sh
Q2 2026
16BANK OF AMERICA CORP /DE/
$143.9M
3.6M
+1.8%
Added · +63K sh
Q1 2026
17VAN ECK ASSOCIATES CORP
Withheld
3.5M
62×
Added · +3.4M sh
Q1 2026
18NORTHERN TRUST CORP
$138.5M
3.4M
−1.0%
Reduced · −34K sh
Q1 2026
19Amundi
$132.3M
3.3M
−20%
Reduced · −834K sh
Q1 2026
20Legal & General Group Plc
$122.0M
3.0M
+5.7%
Added · +164K sh
Q1 2026
21BECK MACK & OLIVER LLC
$118.1M
2.9M
+32%
Added · +702K sh
Q1 2026
22CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$115.9M
2.9M
+7.9%
Added · +211K sh
Q1 2026
23FMR LLC
$114.2M
2.8M
+136%
Added · +1.6M sh
Q1 2026
24Spyglass Capital Management LLC
$76.3M
2.7M
+142%
Added · +1.6M sh
Q2 2026
25BNP Paribas Asset Management Holding S.A.
$107.9M
2.7M
−4.9%
Reduced · −138K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is CSGP being bought or sold by institutions?

Last quarter, 5 funds opened a new position in CSGP and 29 added to an existing one, while 21 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
5
funds
Added
29
funds
Reduced
21
funds
Exited
0
funds

Funds that own CSGP also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT405 funds$319.6B
AMAZON.COM INCAMZN402 funds$242.8B
NVIDIA CORPNVDA399 funds$452.8B
META PLATFORMS INC-CLASS AMETA396 funds$129.2B
APPLE INCAAPL384 funds$340.8B
ALPHABET INC-CL AGOOGL380 funds$203.2B
VISA INC-CLASS A SHARESV379 funds$74.5B
ALPHABET INC-CL CGOOG377 funds$144.6B
ELI LILLY & COLLY377 funds$93.9B
MASTERCARD INC - AMA376 funds$67.8B
BROADCOM INCAVGO374 funds$177.5B
JPMORGAN CHASE & COJPM371 funds$76.3B

Ranked by how many of CSGP's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$5.0M
1 insiders
Sells · 180d
$253K
2 insiders
Net
$4.8M
5 P/S txns
Signal
Net Buying
open-market
DateInsiderRoleActionSharesValue
Aug 7, 2026Cann Cynthia CammettChief Accounting OfficerSell (S)5K$147K
Aug 5, 2026Hill John WDirectorSell (S)4K$106K
Aug 4, 2026FLORANCE ANDREW CFounder and CEO, DirectorBuy (P)83K$2.5M
May 1, 2026FLORANCE ANDREW CPresident and CEO, DirectorBuy (P)68K$2.4M
May 1, 2026FLORANCE ANDREW CPresident and CEO, DirectorBuy (P)3K$111K
Mar 6, 2026Sams Louise SDirectorBuy (P)1K$48K
Mar 2, 2026Glaser Rachel CDirectorBuy (P)1K$45K
Mar 2, 2026SAINT FREDERICK G.President, MarketplacesBuy (P)20K$907K
Feb 27, 2026FLORANCE ANDREW CPresident and CEO, DirectorBuy (P)56K$2.5M
Nov 13, 2025Cann Cynthia CammettChief Accounting OfficerSell (S)2K$127K
Nov 13, 2025Hill John WDirectorSell (S)2K$155K
Aug 28, 2025SAINT FREDERICK G.President, MarketplacesSell (S)25K$2.3M

Institutional ownership over time

387 funds-151 since Q3 2024
0367733Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $2.6B

Recent filings

15 shown

Keep exploring

Connected entities for CSGP

Browse more

Build

Ask your agent what changed in CSGP

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/CSGP/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for CSGP.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for CSGP. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.