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

Electro Optic Systems Holdings (ASX:EOS): +15%, AU$11.49

Fortescue (ASX:FMG): +6%, AU$20.87

nib Holdings (ASX:NHF): +5%, AU$6.13

Alcoa (ASX:AAI): +4%, AU$94.63

Yancoal Australia (ASX:YAL): +6%, AU$8.21

Rio Tinto (ASX:RIO): +3%, AU$158.68

IGO (ASX:IGO): +2%, AU$7.77

Sandfire Resources (ASX:SFR): +3%, AU$17.20

NEXTDC (ASX:NXT): +2%, AU$13.06

Capstone Copper (ASX:CSC): +2%, AU$11.83