Now the S&P 500 is struggling to hold on, too. The market benchmark erased earlier gains but was back up 0.1%. The Nasdaq Composite was down 0.3%. The Dow was up just 41 points, or 0.1%. The S&P’s ...

Avnet Inc.’s year-over-year sales dropped as the Phoenix-based electronics component distributor continued to navigate challenging market conditions during its second fiscal quarter.