Abigail Johnson, billionaire chief executive of Fidelity Investments, has backed away from Scorpio Tankers, divesting a $19.1m share in the New York-listed owner.

Boston-based parent FMR (Fidelity Management & Research) has sold almost 10.7 million common shares of the Robert Bugbee-led company, lowering interest to 2.6% from a top institutional stake of 7.8%, according to a regulatory filing.

Johnson and her company now have a $24.5m