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CSGP · Costar Group, Inc.
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TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475TEAM-0.32% 13F +439META+2.47% 13F +2,694RCG-2.04% CLUSTERUTHR-4.03% 13F +425CRWV-1.12% 13F +693CRM-0.46% 13F +1,018CVNA+2.74% 13F +794TPL-0.71% 13F +444NET-4.47% 13F +710MSTR-1.35% 13F +526DELL+15.81% 13F +1,203CRWD-5.42% 13F +1,382ANET+2.87% 13F +1,323COIN-1.05% 13F +475
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CSGP

COSTAR GROUP, INC.
SOFTWARE & IT · SERVICES-BUSINESS SERVICES, NEC · CIK 0001057352
C-SUITE BUYING · 1CONGRESS · 1FORM 144 · 1☆ WATCH
INSIDER NET · 180D
$4.8M
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
1
CONGRESS BUYERS · 1Y
1
FUNDS ADDED · QTR
417
13F, latest reported quarter
REVENUE GROWTH
+18.7%
XBRL, annual
NET MARGIN
0.2%
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net +$4.8M over 180 days
+$2.2M over 90 days
more than 97% of Software & IT
CONGRESS
1 member bought in the last year
the lowest in Software & IT
FUNDS
417 funds added or opened last quarter
more than 90% of Software & IT
REVENUE
+18.7% year over year
more than 70% of Software & IT
MARGIN
0.2% net margin
more than 52% of Software & IT
BUYBACKS
$587.0M repurchased, FY to 2026-06-30
more than 85% of Software & IT
SHORT
4.0% of shares outstanding short · 1.9 days to cover · settled 2026-07-31
more than 60% of Software & IT
THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET
417 funds added or opened positions in the latest 13F quarter, of 758 holders.
1 member of Congress reported buying it this year.
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN -64.5%
-64.5%12M
-69%-46%-22%+2%2025-092025-102025-122026-032026-052026-072026-09 2026-08-04 · FLORANCE ANDREW C bought $2.5M2026-02-27 · FLORANCE ANDREW C bought $2.5M2026-05-01 · FLORANCE ANDREW C bought $2.4M2026-03-02 · SAINT FREDERICK G. bought $906.6K2025-11-13 · Hill John W sold $154.5K2026-08-07 · Cann Cynthia Cammett sold $147.4K2025-11-13 · Cann Cynthia Cammett sold $126.6K2026-05-01 · FLORANCE ANDREW C bought $111.0K2026-08-05 · Hill John W sold $105.7K2026-03-06 · Sams Louise S bought $48.4K2026-03-02 · Glaser Rachel C bought $44.9K2026-08-05 · Hill John W filed to sell $106.1K
INSIDER BUYINSIDER SELLFORM 144
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
Insiders are net buyers of their own stock.
The record shows a net $4.8M bought by insiders over 180 days, 417 funds added last quarter, 1 Congress member(s) bought in 12 months, $106.1K in planned Form 144 sales. Every figure is a federal filing, dated the day it became public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
TEAMMETACRWVCRMNETCRWDDDOGDASHAPPIOTPCTYMDB
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, COSTAR GROUP, INC. insiders bought a net $4.8M of stock across 53 Form 4 purchases and sales, with 1 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-04.

INSIDER
FILED
SHARES
VALUE
Cann Cynthia Cammett
Chief Accounting Officer
SELL
2026-08-07
4,788.0
$147.4K
Hill John W
Director
SELL
2026-08-05
3,500.0
$105.7K
FLORANCE ANDREW C
Founder and CEO
BUY
2026-08-04
83,300.0
$2.5M
FLORANCE ANDREW C
President and CEO
BUY
2026-05-01
68,330.0
$2.4M
FLORANCE ANDREW C
President and CEO
BUY
2026-05-01
3,100.0
$111.0K
53 TRANSACTIONS ON RECORD

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Institutional holders
13F · holdings as of the latest quarter funds have reported
VANGUARD PORTFOLIO MANAGEMENT LLC
37,914,844.0 sh
$1.1B
BlackRock, Inc.
33,813,969.0 sh
$957.6M
VANGUARD CAPITAL MANAGEMENT LLC
26,683,792.0 sh
$755.7M
BAMCO INC /NY/
21,626,763.0 sh
$612.5M
STATE STREET CORP
18,410,876.0 sh
$521.4M
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
Planned sales · Form 144
Filed before the sale — intent, not a trade
Hill John W
FILED 2026-08-05
$106.1K
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
VY(R) BARON GROWTH PORTFOLIO
$10.4M POSITION · AS OF 2026-03-31
4.7%
BARON GROWTH FUND
$106.9M POSITION · AS OF 2026-03-31
4.1%
LVIP Baron Growth Opportunities Fund
$25.4M POSITION · AS OF 2026-03-31
4.0%
Tremblant Global ETF
$5.8M POSITION · AS OF 2026-03-31
3.8%
Akre Focus ETF
$236.6M POSITION · AS OF 2026-04-30
3.7%
Spyglass Growth Fund
$26.3M POSITION · AS OF 2026-03-31
3.1%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Executive pay vs shareholder return · Andrew C. Florance
DEF 14A pay-versus-performance disclosure · both the headline pay and the SEC's mark-to-market figure, beside the return the company delivered and the return of the peer group it chose itself
FY
CEO TOTAL
ACTUALLY PAID
OTHER NEOs AVG
TSR
PEER TSR
2025
$36.4M
$33.2M
$8.1M
+12%
+23%
2024
$37.4M
$8.2M
$8.2M
+20%
+19%
2023
$29.2M
$28.6M
$7.3M
+46%
+13%
2022
$19.4M
$16.2M
$5.6M
+29%
+1%
2021
$22.2M
$11.4M
$6.6M
+32%
+37%
TAGGED BY THE COMPANY UNDER SEC ITEM 402(v) · RETURN IS CUMULATIVE FROM THE START OF THE DISCLOSURE PERIOD · GREEN WHERE THE COMPANY BEAT ITS OWN PEER GROUP
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-122023-122022-12
REVENUE$3.2B$2.7B$2.5B$2.2B
GROSS PROFIT$2.6B$2.2B$2.0B$1.8B
OPERATING INCOME$-72.0M$5.0M$282.0M$451.0M
NET INCOME$6.5M$138.7M$374.7M$369.5M
EPS (DILUTED)0.020.340.920.93
OPERATING CASH FLOW$430.0M$393.0M$490.0M$478.7M
CASH$1.6B$4.7B$5.2B$5.0B
LONG-TERM DEBT$993.0M$992.0M$990.5M$989.2M
BUYBACKS$500.0M$0$0—
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-04 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

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