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The S&P 500 declined 0.1% to 4,691.12 in midday trading.
The Dow Jones Industrial Average increased 0.3% to 36,333.61 while the Nasdaq fell 0.7% to 14,980.22.
Crude oil fell 0.9% to $78.75.
Gold increased 0.4% to $1,796.30.
The yield on a 10-year Treasury was up 1.96% to 1.766%.

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RESTAURANTS
Kura Sushi USA Inc. (Nasdaq: KRUS) dropped 22% to $54.72 and a $531 million market cap. The Irvine-based Japanese restaurant chain yesterday reported fiscal first-quarter sales that missed the average estimate of analysts. Prior to today, the shares had doubled in the past two months.

MEDICAL DEVICES
Glaukos Corp. (NYSE: GKOS) climbed 6.2% to $48.14 and a $2.3 billion market cap. The San Clemente provider of glaucoma treatments yesterday said it’s received FDA clearance for its iPRIME Viscodelivery System.