What is the 13F Pro Quality Score for CSGP?

13F Pro ranks COSTAR GROUP, INC. (CSGP) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View CSGP's current score at https://13fpro.ai/research/CSGP (free sign-up required for the full ranking).

Where does 13F Pro source CSGP data?

All COSTAR GROUP, INC. fundamentals and ownership data come directly from SEC EDGAR. COSTAR GROUP, INC. files with the SEC under CIK 1057352. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is CSGP in?

COSTAR GROUP, INC. (CSGP) is classified in the Industrials sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/industrials.

How often is CSGP research updated on 13F Pro?

CSGP's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

COSTAR GROUP, INC.(CSGP)Stock Analysis

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13F Pro Quality Score

49.5/100

Rank #1,503 of 2,879 stocks

View Industrials peers →

Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Aug 14, 2026.

Revenue Growth

74.0/100

Profitability

26.7/100

Balance Sheet

34.3/100

Earnings Quality

30.0/100

Free Cash Flow

47.4/100

Institutional Flow

74.3/100

Revenue Scale

71.4/100

Dilution Risk

23.3/100

CSGP Stock Analysis & AI Quality Score

AI stock analysis and institutional research for COSTAR GROUP, INC. (CSGP), a Industrials sector company. 13F Pro's AI-powered ranking engine scores CSGP at 49.5/100 on a 32-signal composite quality model, placing it at rank #1,503 of 2,879 stocks — the bottom half of the AI-ranked universe. Areas of concern include profitability (26.7) and earnings quality (30.0), which score below median versus the broader universe. Shareholder dilution risk is elevated at 23.3/100, reflecting ongoing share issuance or stock-based compensation. Based on the latest XBRL financial filings (Q1 2026), COSTAR GROUP, INC. reports quarterly revenue of $897.0M, net income of $3.0M, an operating margin of 0.3%. Top institutional holders of CSGP by reported 13-F value include VANGUARD PORTFOLIO MANAGEMENT, BlackRock,, VANGUARD CAPITAL MANAGEMENT, based on the most recent SEC filings. CSGP trades on the Nasdaq exchange and files with the SEC under CIK 1057352. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate CSGP daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for COSTAR GROUP, INC. directly from SEC EDGAR. COSTAR GROUP, INC.'s 13F Pro composite quality score has ranged between 8 and 68 since 2021, currently 49.5 — a declining long-term trajectory across 56 quarterly and live scoring snapshots.

✦

Fun facts about COSTAR GROUP, INC.

Quirks, history, and lore behind CSGP — the kind of stuff that makes a stock memorable.

1
The Basics
U.S. data and analytics company · mid-cap · listed on Nasdaq · headquartered in the Washington, DC area.
2
The Numbers
Annual revenue in the neighborhood of $2 billion, with a business model built almost entirely on subscription fees rather than one-time transactions.
3
The History
Founded in the early 1990s, it started as a scrappy database aggregator and grew into the dominant information platform for an entire professional industry.
4
The Secret
Its core customers are brokers, landlords, and lenders who pay handsomely to access data they simply cannot get anywhere else — think Bloomberg, but for buildings.
5
The Lore
It has spent aggressively to build an empire, acquiring Apartments.com and several rival platforms, turning itself into the Google Maps of commercial real estate.
6
The Giveaway
If a skyscraper sold, a shopping mall leased, or an office park traded hands in the U.S., chances are the deal data lived first in this company's database — the undisputed king of commercial real estate intelligence.

▶ Think you know your stocks? Play the Daily Ticker

Revenue

Q1 2026

$897.0M

Net Income

Q1 2026

$3.0M

Free Cash Flow

Q1 2026

$107.0M

Operating Margin

Q1 2026

0.3%

ROIC

Q1 2026

0.0%

D/E Ratio

Q1 2026

0.13

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro+

Revenue

+32.3% YoY

$3.25BFY 2025

FY21 $1.94BFY22 $2.18BFY23 $2.46BFY25 $3.25B

Net Income

-98.1% YoY

$7.0MFY 2025

FY21 $292.6MFY22 $369.5MFY23 $374.7MFY25 $7.0M

Operating Income

-125.5% YoY

$-72.0MFY 2025

FY21 $432.3MFY22 $451.0MFY23 $282.0MFY25 $-72.0M

EPS (Diluted)

-78.3% YoY

$0.02FY 2025

FY21 $0.07FY22 $0.09FY23 $0.09FY25 $0.02

Total Assets

+18.1% YoY

$10.54BFY 2025

FY21 $7.26BFY22 $8.40BFY23 $8.92BFY25 $10.54B

Total Debt

-0.7% YoY

$993.0MFY 2025

FY21 $1.00BFY22 $1.00BFY23 $1.00BFY25 $993.0M

Op. Cash Flow

-12.2% YoY

$430.0MFY 2025

FY21 $469.7MFY22 $478.7MFY23 $490.0MFY25 $430.0M

Metric	FY 2025	FY 2023	FY 2022	FY 2021	FY 2020	FY 2019
Revenue	$3.25B +32.3%	$2.46B +12.5%	$2.18B +12.3%	$1.94B +17.2%	$1.66B +18.5%	$1.40B
Net Income	$7.0M -98.1%	$374.7M +1.4%	$369.5M +26.3%	$292.6M +28.8%	$227.1M -27.9%	$315.0M
Operating Income	$-72.0M -125.5%	$282.0M -37.5%	$451.0M +4.3%	$432.3M +49.5%	$289.2M -20.4%	$363.5M
EPS (Diluted)	$0.02 -78.3%	$0.09 -1.1%	$0.09 +25.7%	$0.07 +1154.2%	$0.01 -31.4%	$0.01
Total Assets	$10.54B +18.1%	$8.92B +6.2%	$8.40B +15.8%	$7.26B +4.9%	$6.92B +79.4%	$3.85B
Total Debt	$993.0M -0.7%	$1.00B +0.0%	$1.00B +0.0%	$1.00B +0.0%	$1.00B	$0.00
Operating Cash Flow	$430.0M -12.2%	$490.0M +2.4%	$478.7M +1.9%	$469.7M -3.4%	$486.1M +6.2%	$457.8M

AI Insight: CSGP Ratio Trends

CoStar's profitability remains highly volatile with operating margins swinging from -6.1% in Q3 2025 to 5.5% in Q4 2025.

• Operating margin recovered to 0.3% in Q1 2026 from -6.1% in Q3 2025, but remains well below Q4 2024's 5.6% peak.

• ROIC turned positive at 0.1% in Q1 2026 after negative readings in five of the previous six quarters.

• Debt-to-equity ratio remained stable around 0.12-0.14 throughout the period, indicating consistent capital structure.

⚠ Extreme quarterly margin volatility suggests operational instability or significant one-time items affecting consistent profitability measurement.

⚠ TTM operating margin of -0.8% reflects persistent profitability challenges despite recent quarterly improvements.

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Available Research

13F Pro tracks comprehensive data for COSTAR GROUP, INC. including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of CSGP

VANGUARD PORTFOLIO MANAGEMENT LLC
$1.5B38,234,133 sh
BlackRock, Inc.
$1.4B33,808,184 sh
VANGUARD CAPITAL MANAGEMENT LLC
$1.1B27,423,903 sh
STATE STREET CORP
$752.4M18,650,975 sh
PRINCIPAL FINANCIAL GROUP INC
$713.9M17,696,192 sh
BAMCO INC /NY/
$658.1M16,314,175 sh
Capital International Investors
$625.8M15,513,753 sh
BAILLIE GIFFORD & CO
$549.1M13,610,922 sh
POLEN CAPITAL MANAGEMENT LLC
$507.1M12,570,368 sh
GEODE CAPITAL MANAGEMENT, LLC
$500.4M12,448,652 sh

Fund	Value	Shares
VANGUARD PORTFOLIO MANAGEMENT LLC	$1.5B	38,234,133
BlackRock, Inc.	$1.4B	33,808,184
VANGUARD CAPITAL MANAGEMENT LLC	$1.1B	27,423,903
STATE STREET CORP	$752.4M	18,650,975
PRINCIPAL FINANCIAL GROUP INC	$713.9M	17,696,192
BAMCO INC /NY/	$658.1M	16,314,175
Capital International Investors	$625.8M	15,513,753
BAILLIE GIFFORD & CO	$549.1M	13,610,922
POLEN CAPITAL MANAGEMENT LLC	$507.1M	12,570,368
GEODE CAPITAL MANAGEMENT, LLC	$500.4M	12,448,652

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Is CSGP a good stock to buy?

13F Pro's AI-powered analysis of COSTAR GROUP, INC. (CSGP) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Industrials sector (listed on Nasdaq). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for CSGP are available on the CSGP stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing.

Which hedge funds own CSGP?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling CSGP. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of COSTAR GROUP, INC.'s investment landscape.