Shipbrokers and analysts are increasingly bullish on crude tanker prospects as US President Donald Trump threatens more sanctions against Iranian oil exports.

London-listed broker Braemar and investment bank Clarksons Securities argue that more barrels will be shifted to the mainstream fleet, sidelining shadow vessels.

Crude tanker companies’ shares fell as much as 3% last week, but there was a notable rebound last Friday, driven by increased speculation about a “maximum pressure” policy targeting Iranian crude exports, Clarksons noted.