Corrects spelling of revenue in bullet 4
** Shares of storytelling platform Webtoon Entertainment WBTN.O down ~21% at $13.34 in extended trading
** Webtoon forecasts revenue decline between 2.3% and 5.1% in Q4, while analysts estimated a rise of 12.3%, according to 6 analysts polled by LSEG
** Expects adjusted core loss of $1.5 million to $6.5 million in Q4 vs estimate of adjusted core profit of $12.5 million
** Reports Q3 revenue of $378 mln, below estimates of $385.1 mln
** Separately, company says it partnered with Warner Bros. Animation to co-produce 10 Webtoon series for global distribution
** Up to last close, stock had risen ~24% this year
(Reporting by Akash Sriram in Bengaluru)
((Akash.Sriram@thomsonreuters.com; https://twitter.com/hoodieonveshti;))