Posco Dx (KRX:022100) posted fourth-quarter net attributable loss of 1.12 billion won, swinging from an attributable income of 20.7 billion won a year earlier, according to a Wednesday filing with the Korea Exchange.

Sales were down 28% year over year to 260.8 billion won from 361.6 billion won.

Shares of the IT service management company jumped nearly 4% at market close.