Why Is Generac Holdings $GNRC Stock Up +21.92% Today? (Find out why any stock moved today on Tickeron.) • Generac Holdings $GNRC surged roughly 21.9% to about $213.50, up from the prior session's close of $175.11. • The primary catalyst was a long-term agreement to supply backup power generators for AMZN data centers. • Initial deliveries under the deal are expected to total about $2.4 billion across 2027 and 2028, with total purchases potentially reaching $8 billion. • Several analysts responded positively, with multiple firms reiterating bullish ratings and raising price targets. • The move far outpaced the broader market, which traded modestly higher following a Federal Reserve rate decision. • Traders are now watching the upcoming earnings report and the ramp-up of the company's data-center backlog. $CMI $ETN $ROK $PH $DOV $EMR $OTIS $AOS