** Shares of construction firm Sterling Infrastructure STRL.O up 22.1% at $646.88 premarket
** Texas-based firm beat Q1 rev estimates and raised its 2026 outlook
** Raises 2026 rev guidance to $3.70 bln-$3.80 bln, compared to prior guidance of $3.05 bln-$3.20 bln
** Co posts Q1 rev of $825.68 mln, beating analyst est. of $603.58 mln - LSEG-compiled data
** Rev and backlog growth boosted by recent CEC acquisition and over 55% organic rev growth in Q1, driven by its E-Infrastructure Solutions segment
** Eight analysts rate stock "buy" or higher; median PT at $490 - data compiled by LSEG
** As of last close, STRL up 72.9% YTD
(Reporting by Tharuniyaa Lakshmi in Bengaluru)
((tharuniyaa@thomsonreuters.com))