APT Medical (SHA:688617) attributable profit rose 6.8% year over year to 198.1 million yuan in the third quarter, according to a Saturday filing with the Shanghai bourse.
Shares plunged 13% during the close of trading on Monday.
The electrophysiology and vascular interventional medical device manufacturer logged earnings per share of 1.40 yuan, up 6.9% from the year-ago period.
Operating income grew 25% year on year to 653.6 million yuan.