(Reuters) - Drug retailer CVS Health Corp <CVS.N> is in talks to buy health insurer Aetna Inc <AET.N>, the Wall Street Journal reported on Thursday, citing sources.
Aetna's shares closed up 11.5 percent at $178.60, after hitting $184.98.
CVS Health's stock closed down 2.9 percent at $73.31.
Aetna had a market cap of $53.2 billion as of Wednesday's close, according to Thomson Reuters data.
(Reporting by Divya Grover in Bengaluru; Editing by Sriraj Kalluvila)