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The S&P 500 increased 0.2% to 4,376.06 in midday trading.
Both the Dow Jones Industrial Average and Nasdaq were flat at 34,876.80 and 14,680.53, respectively.
Crude oil fell 2.8% to $73.15.
Gold was up 0.8% to $1,823.40 an ounce.
The yield on a 10-year bond fell 3.46% to 1.366%.

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San Clemente’s Glaukos Corp. (NYSE: GKOS) dropped 21% to $58 and a $2.7 billion market cap. The Centers for Medicare and Medicaid Services (CMS) released its proposed physician fee schedule for fiscal year 2022 that Glaukos CEO Thomas Burns said was "unwelcomed and unexpected news that we believe is unjustified.” William Blair downgraded the maker of glaucoma therapies to market perform.

Irvine’s Kura Sushi USA Inc. (Nasdaq: KRUS) climbed 11% to $42.81 and a $361 million market cap. Kura, which currently counts 32 restaurants, yesterday reported fiscal third quarter sales of $18.5 million, topping the average analyst estimate of $15.5 million.