One of Ardmore Shipping's largest shareholders has significantly reduced its stake in the Irish product tanker owner.

New York-based investment manager Blackrock sold nearly 1.7m shares, according to regulatory filings made on Monday, whittling down its position from 2.2m shares to 495,717.

According to Ardmore's annual report, Blackrock was the company's second-largest shareholder, with 6.6%