The Nasdaq was up 0.91% to 2,936.66, while the Dow Jones Industrial Average was up 0.52% to 12,871.92 in midday trading today.
The yield on a 10-year treasury bond was down 0.93% to 1.49%.
Gold prices fell 0.67% to $1,578.80 per ounce.
Orange County’s biggest gainer in midday trading was Anaheim-based action sports retailer Pacific Sunwear of California Inc. Pacific Sunwear’s shares were up 6% to $1.94 to a recent market value of about $132 million.
Other Wednesday gainers included Santa Ana-based Corinthian Colleges Inc. with shares up 5% to $2.70 to a recent market value of about $228 million.
Shares of Biolase Inc. in Irvine were up 3.72% to $1.81. Biolase had a recent market value of about $56 million.
Trading of OC’s larger public companies were generally up through the morning.
Orange County's biggest loser in midday trading today was Irvine-based data management software company TigerLogic Corp. with shares down 5.26% to $1.80. TigerLogic had a recent market value of about $51 million.
Shares of CombiMatrix Corp. were down 4.99% to $0.76 to a recent market value of about $8 million. The company received a letter from Nasdaq late last month that gives CombiMatrix 180 days to regain compliance with the stock exchange’s minimum $1 bid requirement.
Shares of Newport Beach-based Alliance Healthcare Services Inc. were down 3.85% to $0.90 to a recent market value of about $46 million. Alliance has six months to boost its per share price, which fell below $1 per share over 30 consecutive days, according to a notice sent to the company earlier this month from the New York Stock Exchange.