COSTAR GROUP INC

$CSGP
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Smart money positioned

17 of the Top-200 alpha managers hold $CSGP as of the latest 13F snapshot.

13F holders
13
Insider buys · 90d
0
Congress · 90d
0

Smart Money · top-200 alpha cohort

17 holders · Q1 2026

$CSGP is held by 17 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 0.79%, with an average of 0.15% of portfolio. Largest holder: Platinum Investment Management Ltd. at 0.79%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Platinum Investment Management Ltd.
0.79% NEW
α +25.6pts
02
Motley Fool Wealth Management, LLC
0.70% NEW
α +15.3pts
03
Svb Wealth LLC
0.26% held
α +29.6pts
04
Voloridge Investment Management, LLC
0.21% NEW
α +15.5pts
05
Erste Asset Management GmbH
0.17% NEW
α +33.4pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 13 · Source: 13F-HR
01
Vanguard Group Inc.
0.07% of portfolio
70,108,999 sh
02
State Street
0.03% of portfolio
18,650,975 sh
03
Akre Capital Management LLC
6.83% of portfolio
10,348,273 sh
04
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.02% of portfolio
2,425,693 sh
05
Erste Asset Management GmbH
0.39% of portfolio
1,700,000 sh
06
Tiger Global Management LLC
0.26% of portfolio
1,500,000 sh
07
Citadel
0.03% of portfolio
1,088,204 sh
08
Citigroup Inc.
0.02% of portfolio
953,620 sh
09
Two Sigma
0.01% of portfolio
303,004 sh
10
Tudor Investment Corp. Et Al
0.04% of portfolio
179,283 sh
See all 13 13F holders · Pro →

Insider activity · last 90 days

50 transactions · 11 filers
06 Jul 2026
Unknown —
· F
—
—
F
24 Jun 2026
Unknown —
· GRANT
—
—
A
24 Jun 2026
Unknown —
· GRANT
—
—
A
24 Jun 2026
Unknown —
· GRANT
—
—
A
24 Jun 2026
Unknown —
· GRANT
—
—
A
24 Jun 2026
Unknown —
· GRANT
—
—
A
24 Jun 2026
Unknown —
· GRANT
—
—
A
24 Jun 2026
Unknown —
· GRANT
—
—
A
15 Jun 2026
Cann Cynthia Cammett —
· F
461
$32.04
F
01 May 2026
Florance Andrew C —
▲ BOUGHT
3,100
$35.82
P
01 May 2026
Florance Andrew C —
▲ BOUGHT
68,330
$35.17
P
15 Mar 2026
Simuro Frank —
· F
11,107
$43.63
F

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $CSGP in the recent window.

Convergence · $CSGP

Pattern cards reflect public SEC EDGAR and Congressional filing data only. Detection uses filing dates; trade execution dates may differ. Past convergence patterns do not predict future returns. Nothing here is investment advice.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 12:17 UTC.