-- Taiwan Surface Mounting Technology (TPE:6278) logged consolidated revenue of NT$4.51 billion for April, up 3.9% annually, according to a Tuesday filing with the Taiwan Stock Exchange.
Shares dropped 10% in Wednesday's midday trade.
The latest figure also marked a 6.9% increase from March.
Cumulative revenue for January to April reached NT$17.1 billion, up 1.9% year-on-year, the company said.