(Bloomberg) -- Sumitomo Corp. shares surged by the most since August 2020 after activist investor Elliott Management Corp. was said to have built a “large” stake in the Japanese trading house.Most Read from BloombergTesla Soars on Tentative China Approval for Driving SystemStocks Trade for 390 Minutes a Day. Increasingly, Only 10 MatterUS Warns ICC Action on Israel Would Hurt Cease-Fire ChancesYen Sparks Intervention Suspicion After U-Turn From 1990 LowsWhat 60,000 Headlines Say About the Fed’s