New York-listed Ardmore booked a gain of $7.9m for the three months to the end of June, beating the modest $108,250 profit of a year ago and 50% up on the first three months of this year.
Earnings per share of $0.32 came in five cents clear of consensus.
Anthony Gurnee, chief executive of Ardmore, said: “This performance is attributable to market strength combined with well-timed fleet growth, as well as a flexible chartering strategy placing emphasis on spot trading and a highly efficient operating platform.