Shares of Exxon Mobil Corp., the world's largest publicly traded oil company, fell in premarket trading Thursday after its first-quarter earnings missed Wall Street expectations by 11 cents per share.
Shares fell $2.43, or 2.6 percent, to $90.64.
Shares of JDS Uniphase Corp. continued a slide that began late Wednesday after the communications equipment provider issued a fourth-quarter revenue forecast below Wall Street expectations.
Shares were down 11.8 percent to $12.62 in early trade.
Shares of First Solar Inc. dipped about 2 percent to $286 after a ThinkPanmure analyst downgraded the stock to "Accumulate" from "Buy."
Jonathan Hoopes said First Solar's stock price is limited by growing competition from rivals and by companies developing new solar power technologies.
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