Here are the 10 ASX-listed companies with the biggest gains on Friday.

Codan (ASX:CDA) : +17%, AU$36.9

Alkane Resources (ASX:ALK) : +8%, AU$1.4920

Mesoblast (ASX:MSB) : +8%, AU$3.1950

Eagers Automotive (ASX:APE) : +5%, AU$26.79

Predictive Discovery (ASX:PDI) : +6%, AU$0.8500

James Hardie Industries (ASX:JHX) : +5%, AU$32.23

Zip (ASX:ZIP) : +5, AU$3.5750

Viva Energy Group (ASX:VEA) : +4%, AU$2.1050

Austal (ASX:ASB) : +3%, AU$8.07

Santos (ASX:STO) : +3%, AU$6.14