Oracle - Oracle reported quarterly profit of $0.64 a share, excluding certain items, three cents above estimates. Revenue was also above consensus, and Oracle forecast that new software sales would rise by 3 percent to 13 percent for the current quarter.
Knight Capital Group - Knight agreed to be acquired by Getco Holding for about $2 billion, or $3.75 per share. That comes after Getco sweetened its original offer by raising the cash portion of its cash-and-stock deal. It beat out rival bidder Virtu Financial for the market maker.
General Electric - GE has been removed from the "Key Call" list at UBS, which said an uncertain macro environment may result in weaker-than-expected earnings.
Health Net - Health Net says its health plan enrollment will decline by 1-2 percent in 2013 because of weakness in its commercial market. The managed-care provider expects 2013 earnings of $2-$2.10 per share, below analyst estimates of $2.12.
Hertz Global - Bank of America has cut its stake in the car rental firm to 7.4 percent from 10.97 percent, according to a U.S. Securities and Exchange Commission filing.
Delphi Automotive - The auto parts maker will join the S&P 500 after the close on Dec. 21, replacing Titanium Metals. That company is being acquired by Precision Castparts in a deal that will be completed shortly.
UBS - The Swiss bank has agreed to pay about $1.5 billion in fines to settle the investigation into manipulation of Libor rates. (Read More: Geithner Was Told of Libor Fears in 2008)
Alcoa - The Dow Jones Industrial Average component has been put on review by Moody's for a possible downgrade because of a sharp drop in aluminum prices this year. A downgrade could push Alcoa's credit ratings into junk territory.
SPX Corp. - SPX is close to a deal to buy rival machinery maker Gardner Denver for $4.2 billion, according to Reuters. The deal could value Gardner Denver at $85 per share, compared to its Tuesday close of $73.68.
Nokia - The handset maker is reviving plans to develop a 10-inch Windows RT tablet device, according to DigiTimes. Nokia had originally planned such a device to debut earlier this year, but put the project on the back burner after Microsoft announced its own Surface tablet.
Citigroup - Morgan Stanley has upgraded Citi to "overweight" from "equal-weight," as it upgrades the large cap banking sector to "attractive," saying consumer deleveraging is coming to an end and that more clarity on regulation is forthcoming.