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
11
Insider buys · 90d
1code P
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 11 · Source: 13F-HR
01
Vanguard Group Inc.
0.07% of portfolio
70,108,999 sh
02
State Street
0.02% of portfolio
18,410,876 sh
03
Akre Capital Management LLC
7.13% of portfolio
11,699,396 sh
04
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.01% of portfolio
2,521,571 sh
05
Erste Asset Management GmbH
0.39% of portfolio
1,700,000 sh
06
Two Sigma
0.02% of portfolio
1,104,950 sh
07
Citigroup Inc.
0.01% of portfolio
889,581 sh
08
Citadel
0.01% of portfolio
741,898 sh
09
Tudor Investment Corp. Et Al
0.08% of portfolio
627,490 sh
10
Platinum Investment Management Ltd.
0.28% of portfolio
40,000 sh
See all 11 13F holders · Pro →

Insider activity · last 90 days

50 transactions · 11 filers
10 Aug 2026
Unknown —
▼ SOLD
—
—
S
10 Aug 2026
Unknown —
▼ SOLD
—
—
S
05 Aug 2026
Unknown —
▲ BOUGHT
—
—
P
04 Aug 2026
Unknown —
· GRANT
—
—
A
04 Aug 2026
Unknown —
· GRANT
—
—
A
04 Aug 2026
Unknown —
· F
—
—
F
04 Aug 2026
Unknown —
· F
—
—
F
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

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 16:55 UTC.