** Shares of advertising technology firm Trade Desk TTD.O down 17.05% to $20.87 in premarket trading
** Co forecast Q1 revenue below Wall Street expectations on Wednesday amid rising pressure from larger rivals
** Co expects Q1 revenue of at least $678 million, below analysts' average estimate of $689.2 million
** 20 of 39 brokerages rate the stock "buy" or higher, 15 "hold" and 4 "sell"; median PT is $41 - data compiled by LSEG
** Up to last close, stock down 33.71% YTD
(Reporting by Kanishka Ajmera in Bengaluru)
((mailto: Kanishka.Ajmera@thomsonreuters.com;))