Take a look at some of Thursday morning's early movers:
Sirius XM Radio —The satellite radio operator added 1.7 million new subscribers in 2011, exceeding its forecasts of 1.6 million.
Target —The big-box retailer's stock is under pressure after December sales came in below estimates.
Zumiez —The teen retailer raises fourth quarter guidance after December same-store sales beat estimates.
Tesoro —The firm projects a fourth quarter loss versus an expected profit because of declining margins in California and a collapse in the West Texas/Brent Crude price spread. (Track oil prices here.)
Seagate —The hard disk manufacturer lifted its revenue outlook for the fiscal second and third quarters, as the impact from the Thai flooding was not as bad as expected. Seagate's forecast also lifting shares of competitor Western Digital .
American Greetings —The card company will buy back up to $75 million in shares, trying to boost the stock after a 28 percent plunge over the past month.
Mosaic —The fertilizer producer's fiscal second quarter earnings fell 39 percent, but still topped estimates.
Kraft Foods , SodaStream —The two strike a co-branding deal under which certain Kraft-made flavors—including some from Crystal Light and CountryTime—will be made available for the SodaStream soda-making system.
Boston Beer —The beer brewer was downgraded to "sell" at Goldman Sachs.
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