Take a look at some of Friday's midday movers:
Amazon.com - The online retailer fell as analysts voiced concerns about its spending on technology, content and new warehouses.
Diamond Offshore Drilling - The driller climbed after it reported a first-quarter profit of 93 cents a share, topping estimates for 65 cents.
Ford Motor - The car manufacturer declined after first-quarter earnings disappointed.
KLA-Tencor - The technology company fell after B Riley downgraded its shares to "neutral" from "buy."
LifePoint Hospitals - The rural hospital operator rose after posting first-quarter earnings that beat expectations. Other healthcare names also gained, including Tenet Healthcare and Community Health Systems.
Masco - The installer of home insulation dropped after posting first-quarter earnings that came in below estimates.
Microsoft - The software giant gained after its earning beat forecasts.
Pandora Media - The online music provider declined after projecting profit below expectations for the current quarter.
Visa - The world's largest credit and debit card company fell after saying and that revenue growth would slow more in the current quarter. Shares of rival MasterCard also declined. Both companies stopped providing services to two Russian banks after the U.S. imposed sanctions on Russia in March.
—By CNBC's Kate Gibson
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