Valaris (VAL) reported a Q1 loss late Wednesday of $0.53 per diluted share, swinging from earnings of $0.35 a year earlier.
Analysts polled by FactSet expected EPS of $1.23.
Operating revenue for the quarter ended March 31 was $620.7 million, up from $525 million a year earlier.
Analysts surveyed by FactSet expected $587.3 million.