BUZZ-Duolingo jumps after Evercore turns bullish, doubles PT to Street high

** In the NFLX case, the video streamer "hit a growth wall" and its shares collapsed 70%, while a series of major, successful product changes led to "a virtuous cycle" of fundamental improvements, positive estimate revisions, and "dramatic share price outperformance," Mahaney said.

** Pittsburgh, Pennsylvania-based DUOL last month forecast current-quarter revenue slightly below Street expectations, and reported DAU, a key measure of engagement, grew 23% year over year to 58.7 million in Q2.

** The average rating of 25 brokerages covering DUOL is hold; median price target is $127.50.

** With Tuesday's move, the stock is down 10% year to date, lagging the roughly 13% advance in the Nasdaq .IXIC.

** Language-learning platform Duolingo's DUOL.O shares up 6% on Tuesday to $157.28, highest since late January, after Evercore upgraded the stock to outperform from in line.

** The brokerage hiked its price target from $105 to $210, the highest on Wall Street, according to LSEG, implying about 42% upside to the stock's last close.

** Analyst team led by Mark Mahaney said in a note they are "materially increasing" estimates in the wake of a proprietary survey, an analysis of current product improvements, new 100 million daily active user EPS sensitivity analysis, third-party tracking of quarter-to-date DAU trends, and "very recent channel checks".