Chipmaker Rohm’s Shares Dive After Denso Weighs Scrapping Buyout

Rohm Co. shares fell as much as 16% after Denso Corp. said it’s considering withdrawing a proposal to take over the power chip maker, dashing hopes for a quick consolidation of Japan’s fragmented supply chain.

The deal had the potential to value the Kyoto-based chipmaker at north of $9 billion. Investors had cheered the talks and the prospect of change at a fiercely independent company that had relied on decades-old relationships.