Investors should start shedding some rallying stocks as U.S. markets linger near highs, CNBC's "Fast Money" traders said.
The "Fast Money" traders give their final trades of the day.
Weight Watchers' stock tumbled in after-hours trade Thursday after the company announced fourth-quarter earnings that missed.
Instagram growth and advertising's move to digital will drive a Facebook stock rally, Cowen and Co.'s David Seaburg said.
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