** Shares of advertising tech firm Viant Technology DSP.O down 16.5% to $16.49 premarket
** The company reported Q4 adjusted EPS of 10 cents after-market on Monday, missing analysts' estimate of 12 cents per share - data compiled by LSEG
** However, it reported Q4 revenue of $90.05 mln, beating analysts' estimate of $83.96 mln
** As of last close, DSP shares are up 4% YTD