Shares of Netflix, Inc. NFLX tumbled about 13 percent in Tuesday's pre-market session following the company's earnings report that showed a miss on the domestic and international net subscriber additions. Despite a notable miss on the subscriber front, Stifel turned bullish on the stock. Stifel's Scott Devitt upgraded Netflix from Hold to Buy and maintained a $406 price target. SourceUpside trend is over. Downside potential still holds. $NFLX, Netflix, Inc. / D