Quanta Services gains on upbeat forecast, Q3 beat

** Shares of energy contractor Quanta Services PWR.N rise ~4% to $630.4

** Quanta forecasts annual profit, revenue above analysts' estimates and beats Q3 estimates, driven by broad-based demand from utility, power generation, industrial and technology customers

** Expects FY revenue of $41.3 billion-$41.6 billion, with midpoint above analysts' est. of $39.76 billion - data compiled by LSEG

** Sees FY adj. EPS between $17.90 and $18.30 vs est. of $16.78

** Q3 EPS of $6.06 beats analysts' est. of $5.02

** Reports Q3 revenue of $12 billion, above est. of $11.04 billion

** Including session's moves, shares up 49.2% YTD