Wayfair’s stock sinks, as investors worry expansion plans will hurt profits

Wayfair’s stock suffered its worst postearnings reaction in nearly four years, after the company unexpectedly swung to a net loss for the latest quarter and warned that profit margins may narrow. Wayfair’s stock suffered its worst postearnings reaction in nearly four years, after the company unexpectedly swung to a net loss for the latest quarter and warned that profit margins may narrow.