Kohl's Corp. received a series of analyst upgrades on Thursday, with three brokerages raising their price targets on the U.S. department-store chain. JPMorgan Chase lifted its target to $11 from $10, while Citigroup made a more aggressive adjustment, moving its estimate to $16 from $8. Separately, Gordon Haskett Research Advisors upgraded Kohl's shares to Accumulate from Hold and boosted its target to $18 from $12.