Aircastle is fueled by an upgrade; CapitalSource gets downgraded.
AIG up on derivatives clampdown; EQT falls on costly expansion plans.
Sprint up on CFO's outlook; Comerica shares fall on a dilutive offering.
US Steel benefits and AK Steel suffers on Goldman Sachs adjustments.
Apple rises on iPad launch date; Yamana feels post-earnings pressure.
Abercrombie rises on February sales, while Amylin falls on a downgrade.
Big Lots rises on earnings; Medivation plummets on study results.
Qualcomm stirs investor confidence while Staples' forecast spurs selling.
Millipore rises on a buyout, while HBC falls on an earnings miss.
Coca-Cola Enterprises rises on deal, while Palm falls on forecast.