JetBlue, Frontier fall after Deutsche Bank downgrades stocks

Shares of JetBlue Airways JBLU.O down 2% and Frontier Group Holdings ULCC.O down 3% premarket after Deutsche Bank trims rating on stocks to "hold" from "buy"

Brokerage says both airlines are exposed to potential pockets of weakness in domestic demand

"While we continue to remain constructive on the supply backdrop – which we still believe is favorable – our attention has shifted to what appears to be an emerging economic "soft patch"" - brokerage

As of last close, JBLU down 17.8% and ULCC down 2.5% YTD