The S&P 500 was down 0.2% in midday trading to 2,271.86.
The Dow Jones Industrial Average was down 0.3% to 19,907.73.
The NASDAQ was up 0.3% to 5,535.00.
The yield on a 10-year Treasury bond fell 1.6% to 2.38.
The price of gold rose 1% to $1,188.
Western Digital Corp. in Irvine was up 2% to $71.80 and a $20.5 billion market cap. Guggenheim Partners initiated coverage on the storage products maker with a “buy” rating and a $100 price target. BMO Capital upgraded its recommendation on the company to “outperform” with a $90 price target.
Aerie Pharmaceuticals Inc. in Irvine was up 3% to $40.30 and a $1.4 billion market cap. The clinical-stage pharmaceutical company signed the lease for its manufacturing plant in Ireland.
ChromaDex Corp. in Irvine was down 16% to $3.08 and a $117 million market cap. The ingredients maker said in its recent third quarter filing it hasn’t received some $3 million in payments from Elysium Health LLC in New York City and the dispute is likely to affect “greater than 10% of our net sales for the year.”