The partnership between Western Digital, Japanese state-backed funds and KKR is expected to be the favored bidder for Toshiba's chip unit.
The world's two biggest PC makers report positive shipment growth. And thanks to strong demand for gaming PCs and high-end notebooks, their revenue grew faster still.
Toshiba shares surged the most in four months in Tokyo trading Wednesday after domestic media reports that Western Digital has offered nearly $18 billion for the troubled conglomerate's flash-memory division.
U.S. stock futures are marginally higher on Wednesday ahead of minutes from the Federal Reserve's last meeting, and after Moody's lowers the credit rating for China.