CSX (CSX) reported Q1 earnings late Wednesday of $0.34 per diluted share, down from $0.45 a year earlier.
Analysts polled by FactSet expected $0.37.
Revenue for the quarter ended March 31 was $3.42 billion, down from $3.68 billion a year earlier.
Analysts surveyed by FactSet expected $3.45 billion.
Shares were down 2% in after-hours Wednesday trading.