Oatly Inc.’s stock fell 10% Thursday to hover close to its all-time low, after the oat-milk maker’s fourth-quarter loss more than doubled from a year prior and its revenue fell far short of analyst estimates.

The Sweden-based company OTLY posted a net loss of $298.7 million, or 50 cents a share, for the quarter — wider than the loss of $125.2 million, or 21 cents a share, it posted in the year-earlier period. The FactSet analyst consensus was for a loss of 11 cents.

The…