The Nasdaq was up 0.01% to 2,991 in midday trading Wednesday, while the Dow Jones Industrial Average rose 0.11% to 13,117.
The S&P 500 was up 0.12% to 1,415.
The yield on a 10-year treasury bond rose 0.40% to 1.77%.
The price of gold was off 0.49% to $1,701 per ounce.
Shares of Irvine-based healthcare software maker Quality Systems Inc. fell 3% to $18 for a market value of $1 billion.
Irvine printed circuit board maker Multi-Fineline Electronix Inc., known as M-Flex, fell about 4% to $21 for a market value of $493 million.