The S&P 500 was up 0.1% in midday trading to 2,554.58.
The Dow Jones Industrial Average fell 0.2% to 22,914.03.
The NASDAQ was up 0.1% to 6,610.36.
The yield on a 10-year Treasury bond increased 0.4% to 2.29%.
The price of gold rose 0.1% to $1,306.
Irvine-based ShiftPixy Inc. (Nasdaq: PIXY), declined 13% to $2.28 and a $65 million market cap. Shares have declined in seven straight trading sessions. The company, which provides temporary employees to restaurants, went public in June at $6 a share.
Costa Mesa-based Veritone Inc. (Nasdaq: VERI) fell 11% to $32.25 and a $482 million market cap. Shares of Veritone, which has an online ad-placement business and is trying to expand into artificial intelligence, are still up about four-fold in the past two months.