Take a look at some of Tuesday's midday movers:
Coca-Cola - The beverage maker was mildly higher after Warren Buffett told CNBC there was no chance of him taking the company private. Money manager and shareholder David Winters expressed concern in a letter to Coca-Cola's board that Buffett, the company's largest shareholder, might be planning a buyout.
Domino's Pizza - The fast-food chain fell after Bank of America Merrill Lynch downgraded its shares to underperform from neutral.
Edwards Lifesciences - The medical device maker surged after receiving Food and Drug Administration approval for an updated version of its implantable heart valve.
GW Pharmaceuticals - The drug developer rose after reporting its experimental cannabis product showed promising results in children and young adults with treatment resistant epilepsy.
Leucadia National - Shares rose after Jefferies Group, the company's investment bank, reported a 55 percent increase in quarterly profit.
Micros Systems - The maker of software for retailers and hotel chains surged after Bloomberg cited people familiar with the matter in reporting Oracle was in discussions to acquire the company for more than $5 billion. NCR and VeriFone Systems also gained on the news.
Netflix - The provider of online programs and films rose after Morgan Stanley upgraded its shares to overweight from equal weight.
Shire - The Irish drug manufacturer slid after Reuters reported late Monday that it had hired additional advisers in preparation for possible offers.
SolarCity - The solar energy systems installer rose after agreeing to acquire solar panel manufacturer Silevo.
Yingli Green Energy Holding Co. - The Chinese solar panel maker jumped after projecting increased demand in the second quarter.
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—By CNBC's Rich Fisherman.
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