---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-261675"
form_type: "8-K"
ticker: "CSGP"
cik: "0001057352"
company_name: "COSTAR GROUP, INC."
filed_at: "2023-10-24T23:59:59+00:00"
generated_at: "2026-06-09T13:17:30.452244+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# CoStar Q3 revenue $625M (+12% YoY); net income $91M (+25%); Homes.com traffic surges

## Summary
- Q3 revenue $625M, up 12% YoY; net income $91M, up 25%; adjusted EBITDA $112M.
- Commercial info & marketplace revenue up 14% YoY; margins approaching 40%.
- Homes.com had 100M unique visitors in Sept, up 1,290% YoY; now second-largest residential network.
- Announced offer to acquire UK residential portal OnTheMarket; expects monetization of Homes.com in Q2 2024.
- FY 2023 guidance: revenue $2.445-2.450B; adjusted EBITDA $485-490M; non-GAAP EPS $1.21-1.22.

## SEC filing metadata
- accession: 0001193125-23-261675
- form_type: 8-K
- ticker: CSGP
- cik: 0001057352
- company_name: COSTAR GROUP, INC.
- filed_at: 2023-10-24T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1057352/000119312523261675/0001193125-23-261675-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1057352/000119312523261675/d668394d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-261675
- JSON: https://secwatch.observer/filing/0001193125-23-261675.json
- Plain text: https://secwatch.observer/filing/0001193125-23-261675.txt

## Key facts
- Earnings Releases
  COSTAR GROUP, INC. reported the quarter ended September 30, 2023 results: revenue $625 million, net income $91 million, EPS 0.22. Guidance reaffirmed.
  - Period: the quarter ended September 30, 2023
  - Revenue: $625 million
  - Net income: $91 million
  - EPS: 0.22
  - Guidance: reaffirmed
  - Result: reported results
  source text: CoStar Group, Inc. (NASDAQ: CSGP), a leading provider of online real estate marketplaces, information and analytics in the property markets, announced today that revenue for the quarter ended September 30, 2023 was $625 million, up 12% over revenue of $557 million for the quarter ended September 30, 2022. Net income was $91 million in the third quarter, an increase of 25% over the prior year.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1057352/000119312523261675/0001193125-23-261675-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.