shares of draftkings inc dkng dropped 59 in premarket trading monday after jp morgan analyst joseph greff turned bearish on the online sports betting and fantasy sports company saying he sees a longer runway and more risk to achieving onlinesportsbetting osb profitability than peers greff cut his rating to underweight after being at neutral for at least the past two years but kept his stock price target at 12 which implies about 21 downside from fridays closing price of 1514 greff also downgraded penn entertainment inc penn  to neutral from overweight as he believes the stock has less upside potential than las vegas casino operator peers penns stock fell 29 in premarket trading with greffs 39 price target implying 115 upside to fridays closing price of 3498 draftkings stock has plunged 449 year to date through friday and penn shares have tumbled 325 while the sp 500 spx has declined 155