The S&P 500 was flat at 4,159.63 during midday trading.

 The Dow Jones Industrial Average fell 0.2% to 34,269.78.

The Nasdaq was up 0.5% to 13,445.92.

The yield on a 10-year Treasury bond increased 0.4% to 1.64%.

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The price of gold was flat at $1,868.10.

The price for a barrel of oil dropped 1.6% to $65.23.

HEALTHCARE

Shares in Irvine-based cancer test maker Oncocyte Corp. (NYSE: OCX) rose 9.9% to $4.46 apiece for a market cap of $399 million. The company yesterday reported revenues that beat consensus estimates, along with positive indications for its DetermalO for immunotherapy response prediction.

TECHNOLOGY

Digital ad software company Viant Technology Inc. (Nasdaq: DSP) fell 4.4% to $25.55 per share for a market cap of $1.5 billion. Analyst website SimplyWallStreet.com said earlier in the day that analysts looking at the company’s quarterly earnings release last week cut their price targets, “suggesting that the latest news has led to greater pessimism about the intrinsic value of the business.”