** Microsoft-backed cybersecurity firm Rubrik's RBRK.N shares rise 17.3% to $82.63 premarket
** Co trims FY adj. EPS forecast to loss of $0.20-$0.16 from $0.50-$0.44 earlier
** Expect $1.28 bln revenue, higher than previous range of $1.23 bln-$1.24 bln
** Posts surprise adj. profit of $0.10/share in Q3 vs analysts' estimates of $0.17/share loss - data compiled by LSEG
** Piper Sandler raises PT to $118 from $115
** Out of 23 analysts, 21 rate stock "strong buy" or "buy", two "hold" - LSEG
** As of last close, shares up 7.8% YTD
(Reporting by Anastasiia Kozlova)
((Anastasiia.Kozlova@thomsonreuters.com))