CF Industries Holdings (CF) reported fiscal Q2 net income late Wednesday of $4.73 per diluted share, up from $2.37 a year earlier.

Analysts polled by FactSet expected $5.63.

Revenue for the quarter ended June 30 was $2.22 billion, up from $1.89 billion a year earlier.

Analysts expected $2.45 billion.

Shares fell more than 6% in after-hours activity.