** Shares of cloud platform Zeta Global Holdings ZETA.N
rise 17.3% to $20.81 premarket
** ZETA's shares had fallen 37% in previous session to a
four-month low on a report from short-seller Culper Research
** Thursday's rebound comes after ZETA authorized a
repurchase program for up to $100 mln of Class A common stock
through December 31, 2026
** "We can see no better use for our excess free cash flow,"
says CFO Chris Greiner
** Culper Research said on Wednesday ZETA is "potentially
facing devastating regulatory action" for inflating its reported
revenue growth
** ZETA responded that it is "confident in its internal
accounting processes and controls"
** Twelve of 14 brokerages rate the stock "buy" or higher,
two "hold"; their median PT is $42 - LSEG data
** As of last close, stock up ~101% YTD
(Reporting by Ragini Mathur)
((Ragini.Mathur@thomsonreuters.com;))