CoStar’s (NASDAQ:CSGP) Q3 2026: beats on revenue but stock drops on weak guidance
CoStar reported Q3 2026 revenue of $952M, beating estimates by 0.6%, with adjusted EPS of $0.38, a 12% beat. Adjusted EBITDA was $229M, a 10.8% beat. Q4 revenue guidance is $986M, in line with estimates. Full-year adjusted EPS guidance was raised to $1.40, a 3% increase. EBITDA guidance for the full year is $830M, above estimates. Operating margin improved to 8.8% from -6.1% YoY. The stock dropped on weak guidance.
How this was made
The 30-second read
Why it matters
The earnings beat was offset by guidance that failed to excite the market, creating a sell‑off pressure.
Market read
The earnings release and guidance are material for traders with exposure to data‑service stocks and the broader tech sector.
What to watch
The modest EPS guidance raise and improving operating margin suggest underlying operational improvements that may be undervalued.
Background
CoStar (NASDAQ:CSGP) released its Q3 2026 earnings, beating revenue estimates but providing guidance that disappointed investors, leading to a stock decline.
Ticker impact
CoStar reported Q3 2026 revenue beat but issued weak Q4 guidance, causing the stock to drop.
downward pressure as investors price in weaker guidance
Revenue beat was modest and guidance was in line or slightly below expectations, leading to disappointment and a sell‑off.
Market effects
Real‑estate data and analytics sector may see broader scrutiny as peers' guidance is compared to CoStar's results.
U.S. tech and data‑services stocks could face short‑term weakness.
Limited to investors tracking U.S. data‑service providers; no immediate global ripple.
Counterpoint
Despite the weak guidance, CoStar's strong cash flow and market‑share position could support a rebound if the market overreacts.
Key entities
- CompanyCoStar Group, Inc.
U.S. commercial real‑estate data and analytics provider.
