New York-listed Ardmore Shipping is enjoying its best quarter ever, with spot earnings of MR product tankers reaching their all-time peaks.

With port congestion and floating-storage demand, MR earnings reached nearly $77,000 per day in late April before falling back to a still healthy level of $50,000 per day this week, according to brokers.

“We have to describe our recent chartering activity," said Ardmore chief executive Anthony Gurnee, whose company has 19 MR and six chemical tankers.