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Market Insider | What's Shaking | Earnings to Watch | Before the Bell

Check out which companies are making headlines before the bell on Friday:

Groupon stock jumped after legendary investor Bill Miller said he likes the stock. Miller said Groupon has $1.2 billion in cash, no debt, and is cheap. Miller likes the "low expectations" and said his average cost is about $5. "I'm more attracted to the stuff that has warts on it," he said. Miller also likes Apple, Texas Instruments, and US Airways.

Carnival - Carnival will issue quarterly earnings at 9:15 a.m. ET, and is expected to comment on its recent cruise ship mishaps during a subsequent conference call. On Thursday, the Carnival Dream had to end a cruise in St. Maarten because of various technical problems, and the Carnival Legend is having propulsion problems which will cause it to miss a scheduled stop because it's unable to travel at its usual speed.

JPMorgan Chase, Goldman Sachs - The Federal Reserve said the two banking giants need better capital plans, and gave the banks until September to revise them. That follows the release of the central bank's stress tests. Among those whose capital plans were approved: Citigroup, Wells Fargo, Morgan Stanley, and Bank of America, while BB&T and Ally Financial did not pass.

Live Nation Entertainment - Live Nation has named Liberty Media CEO Greg Maffei as its new non-executive chairman. Maffei has been on the Live Nation board for the past two years.

(Read More: See the Day's Top Percentage Winners & Losers)

Aeropostale - Aeropostale reported fourth-quarter profit of $0.24 per share, excluding certain items, two cents above estimates. Revenue also beat consensus, but the teen clothing retailer also said it would report a loss and a drop in sales for the current quarter because of a weak economy and the need to cut its prices.

Boeing - Boeing said it expects to resume commercial flights of the 787 Dreamliner within weeks, not months. Boeing's chief project engineer, Michael Sinnett, told reporters in Tokyo that a new fix for the jet's battery issues has many new safeguards built in to prevent overheating.

Apple - Rival Samsung introduced its new Galaxy S4 smartphone at an event in New York Thursday night. The S4 will go on sale in the U.S. sometime in May or June.

(Read More: Investors Give Samsung Galaxy S4 a Thumbs Down)

Electronic Arts, Activision Blizzard - NPD reports videogame industry sales were down 25 percent in February compared to a year earlier. Sales have contracted on a year-over-year basis in every month since December 2011.

Facebook - Facebook is investigating using hashtags as clickable items to enhance searching abilities. Sources tell CNBC the move is not imminent.

Freeport-McMoRan Copper & Gold - Goldman Sachs has upgraded the mining company's stock to "buy" from "neutral." Goldman is bullish on copper, and also said a sell-off prompted by a December acquisition was overdone.

Nasdaq-OMX - Wells Fargo has upgraded the exchange operator's shares to "outperform" from "market perform."

(Read More: See CNBC's Market Insider Blog)

—By CNBC's Peter Schacknow

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