Shares of Apple Inc. AAPL, +3.75% are down 0.7% in premarket trading Thursday after Maxim Group analyst Nehal Chokshi downgraded the stock to sell from hold. He expects that the company's March-quarter revenue will come in 14% below consensus estimates and that fiscal 2020 revenue will end up 6% below consensus figures. "We expect operating profit to decline year over year due to our below consensus iPhone view, despite ongoing growth in services and wearables," he wrote. Chokshi also projects a deceleration in Apple's wearables, home, and accessories category in fiscal 2021 due to what could be tougher competition from a combined Alphabet Inc. GOOG, +1.16% GOOGL, +1.13% and Fitbit Inc. FIT, +1.08% . He set a $190 price target on the shares, which have gained 68% so far this year to reach a recent $264.47. The Dow Jones Industrial Average DJIA, +1.33% is up 19% so far in 2019.