Shares of Crocs Inc. dropped 4.9% in premarket trade Monday, after analyst Sam Poser at Susquehanna Financial turned bearish on the casual footwear maker (CROX), saying current prices reflect "too much optimism." Poser cut his rating to negative from neutral, while keeping his price target at $12, which is 26% below Friday's closing price of $16.27. He said current valuations imply earnings per share of $1 by fiscal 2020, but that would require over $1.2 billion in annual revenue, or about 8% compounded growth, which he believes will not occur given store closures and other headwinds, such as high fixed costs. "CROX's current stock price reflects much more future progress that is realistic," Poser wrote in a note to clients. The stock closed on April 5 at the highest level since July 2013. It has run up 28.7% year to date through Friday, while the S&P 500 has slipped 0.7%.