$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.
COSTAR GROUP INC
13F holders
787
Net 13F flow · Q
—
Insider buys · 90d
0
Insider net · 90d
—
Congress · 90d
0
Convergence
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Institutional holders
Top 10 of 787 · Source: 13F-HR01
Hall Capital Management Co. Inc.
—
—
02
Janus Henderson Group PLC
—
—
03
Litman Gregory Wealth Management LLC
—
—
04
Cobblestone Capital Advisors LLC
—
—
05
Axa S.a.
—
—
06
State Street
—
—
07
Thompson Davis & Co. Inc.
—
—
08
Parthenon LLC
—
—
09
Penn Davis Mcfarland Inc.
—
—
10
Thomas H Lee Partners LP
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Each fund name links to that filer's expert page. Share counts and per-fund weights are pending the 13F ingest fix (portfolios_expertholding.units is currently mis-populated — see the same caveat on the fund detail page's holdings table). Quarter-over-quarter delta ships with the metrics pipeline.
Smart Money · top-200 alpha cohort
17 holders · Q1 202601
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
06
WINTON GROUP Ltd
0.15% NEW
α +27.0pts
07
Aigen Investment Management, LP
0.13% NEW
α +50.5pts
08
New Age Alpha Advisors, LLC
0.08% held
α +10.8pts
09
Quarry LP
0.02% held
α +10.6pts
10
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.02% held
α +27.5pts
11
Principal Securities, Inc.
0.02% held
α +21.3pts
12
Citigroup Inc.
0.02% held
α +26.3pts
13
Connor, Clark & Lunn Investment Management Ltd.
0.01% held
α +12.3pts
14
Nisa Investment Advisors, LLC
0.01% held
α +16.6pts
15
Banque Pictet & Cie SA
0.00% held
α +10.3pts
16
Johnson Financial Group, Inc.
0.00% held
α +14.7pts
17
Wellington Management Group LLP
0.00% held
α +10.5pts
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.
Insider activity · last 90 days
10 transactions · 4 filersTransaction 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
25 disclosures · STOCK ActConvergence · Pattern Engine ships in v1.1
30-day windowIn development
Convergence detection for $CSGP lands with the Pattern Engine.
Once the Pattern Engine ships, this section will surface every active convergence event involving $CSGP — the institutional managers and Congress members on the same name, the 30-day window, and the combined position size.
Source data: SEC EDGAR · 13F-HR · Form 4 · CapitolTrades · Last refreshed 09:51 UTC.