** Cloud security firm Datadog's DDOG.O shares jump 28% to $183.83 premarket

** Co posts Q1 revenue of $1.07 bln and adj. EPS of 51 cents, both beating analysts' estimates, according to data compiled by LSEG

** Raises FY 2026 revenue expectations to $4.30 bln to $4.34 bln from the prior range of $4.06 bln to $4.10 bln

** Co says it saw robust growth in large customers and launched new AI-driven products

** 46 of 50 brokerages rate the stock "buy" or higher, three "hold" and one "sell"; their median PT is $175 - LSEG-compiled data

** Up to last close DDOG up 5.6% YTD