CSGP

Costar Group Inc$30.37 6.60%
IndustrialsUSCUSIP 22160N109· EOD Jul 16, 2026◍ Confluence graph
Tracked 13F Holders
518
-34 QoQ
13F Value (tracked)
$14.4B
Insider Net · 180d
$6.0M
4↑ 0↓
Recent Filings
15
Smart-money sentimentBullish
BearishBullish
13F funds (latest Q)36 adding · 19 trimming
Insider net (180d)+$6.0M

Price & smart-money activity

$30.37 6.60%5Y -64.7%
$22.83$43.36$63.89$84.42$104.9520212022202320242025202642324624253242
Hover for who · click for detailEnd-of-day closing prices52w $27.68 – $96.83
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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.

Top institutional holders

518 tracked 13F filers
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
New
+38.2M sh
Q1 2026
2BlackRock, Inc.
$1.4B
33.8M
−0.5%
Reduced · −162K sh
Q1 2026
3VANGUARD CAPITAL MANAGEMENT LLC
$1.1B
27.4M
New
+27.4M sh
Q1 2026
4STATE STREET CORP
$752.4M
18.7M
+0.1%
Added · +19K sh
Q1 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
7POLEN CAPITAL MANAGEMENT LLC
$507.1M
12.6M
+157%
Added · +7.7M sh
Q1 2026
8GEODE CAPITAL MANAGEMENT, LLC
$500.4M
12.4M
+2.2%
Added · +266K sh
Q1 2026
9AKRE CAPITAL MANAGEMENT LLC
$417.4M
10.3M
+7.6%
Added · +730K sh
Q1 2026
10GOLDMAN SACHS GROUP INC
$373.0M
9.2M
+146%
Added · +5.5M sh
Q1 2026
11JANUS HENDERSON GROUP PLC
$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
15BANK OF AMERICA CORP /DE/
$143.9M
3.6M
+1.8%
Added · +63K sh
Q1 2026
16VAN ECK ASSOCIATES CORP
Withheld
3.5M
62×
Added · +3.4M sh
Q1 2026
17NORTHERN TRUST CORP
$138.5M
3.4M
−1.0%
Reduced · −34K sh
Q1 2026
18Meritage Group LP
$134.3M
3.3M
New
+3.3M 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
24Ensign Peak Advisors, Inc
$110.3M
2.7M
+373%
Added · +2.2M sh
Q1 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.

Fund activity: latest quarter

Opened (NEW)
7
funds
Added
29
funds
Reduced
19
funds
Exited
0
funds

Insider activity (Form 4)

Full insider page →
Buys · 180d
$6.0M
4 insiders
Sells · 180d
$0
0 insiders
Net
$6.0M
6 P/S txns
Signal
Net Buying
open-market
DateInsiderRoleActionSharesValue
Jul 1, 2026LOWN CHRISTIAN M.Chief Financial OfficerTax withholding (F)6K$164K
Jun 23, 2026BERISFORD JOHN LDirectorGrant (A)8K$0
Jun 23, 2026Brunner Angelique G.DirectorGrant (A)8K$0
Jun 23, 2026McCarthy Christine MDirectorGrant (A)8K$0
Jun 23, 2026Hill John WDirectorGrant (A)8K$0
Jun 23, 2026Musslewhite Robert WDirectorGrant (A)8K$0
Jun 23, 2026Glaser Rachel CDirectorGrant (A)8K$0
Jun 23, 2026Sams Louise SDirectorGrant (A)8K$0
Jun 15, 2026Cann Cynthia CammettChief Accounting OfficerTax withholding (F)461$15K
May 1, 2026FLORANCE ANDREW CPresident and CEO, DirectorBuy (P)68K$2.4M
May 1, 2026FLORANCE ANDREW CPresident and CEO, DirectorBuy (P)3K$111K
Mar 15, 2026Cann Cynthia CammettChief Accounting OfficerTax withholding (F)1K$52K

Institutional ownership over time

525 funds+62 since Q3 2024
0293585Q3 2024Q1 2025Q3 2025Q1 2026
funds holding aggregate valuelatest $14.0B · 1 values withheld

Funds that own CSGP also own

CompanyCo-held byCombined value
MICROSOFT CORPMSFT263 funds$272.1B
AMAZON.COM INCAMZN263 funds$207.9B
NVIDIA CORPNVDA257 funds$378.1B
APPLE INCAAPL256 funds$278.7B
META PLATFORMS INC-CLASS AMETA256 funds$108.7B
ALPHABET INC-CL AGOOGL255 funds$170.8B
BROADCOM INCAVGO251 funds$144.8B
VISA INC-CLASS A SHARESV250 funds$58.9B
ELI LILLY & COLLY249 funds$78.1B
MASTERCARD INC - AMA248 funds$56.9B
ALPHABET INC-CL CGOOG247 funds$121.3B
NETFLIX INCNFLX247 funds$41.9B

Ranked by how many of CSGP's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).

Recent filings

15 shown

Browse more

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. Every panel above is one call to the Arkolith API & MCP server.