CoStar Group (CSGP) reported Q4 earnings late Tuesday of $0.15 per diluted share, down from $0.24 a year ago.
Analysts surveyed by FactSet expected $0.13.
Revenue for the quarter ended Dec. 31 was $709.4 million, up from $640.1 million a year earlier.
Analysts polled by FactSet expected $701 million.
The company said it expects Q1 revenue of $711 million to $716 million. Analysts expect $726.4 million.
CoStar expects revenue for the year of $2.99 billion to $3.02 billion. Analysts expect $3.06 billion.
Shares were down more than 6% in recent after-hours activity.