Dow rises but Seagate dives on Toshiba report; Zebra, Amphenol clear entries

Dow up 0.5%, S&P 500 and Nasdaq up 0.7%. Seagate fell 9% on Toshiba/TDK magnetic-head deal report. Western Digital down 7%. Zebra cleared 386.23 buy point, up 3%. Amphenol cleared 88.17 entry, up 2%. AMD up 2% premarket on Citi price-target hike to 800. Nvidia up 1%. Constellation Energy up 13% on Google power deal.