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Here are the biggest analyst calls of the day: Delta, American Airlines, L Brands, Hertz, Party City & Michaels

Michael Bloom

Deutsche downgrading Delta & American to "hold" from "buy" Bernstein downgrading L Brands to "market-perform" from "outperform" Barclays upgrading L Brands to "overweight" from "equal weight" Barclays upgrading Hertz to "equal weight" from "underweight" J.