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Ariad Pharmaceuticals' (ARIA) stock rating was cut to 'underweight' at JPMorgan on Monday.
Here are Monday's top research calls, including upgrades for Kinder Morgan, Verizon and 3M, and a downgrade for AT&T.
Jim Cramer says he likes LUV and UAL, but JBLU is not a favorite.
Don't ignore a big shift for American Express and don't dig in your heels, says Jim Cramer.