Corrects 7th bullet point to Vistra fourth-quarter 'income' not 'profit'

** Shares of chipmakers and AI-lined stock rise premarket after bellwether Nvidia's NVDA.O quarterly outlook suggests demand from tech companies racing to build out AI infrastructure remains robust

** "The market needed positive results coming from NVIDIA to indicate that growth is still there," says Leslie Thompson, co-founder and chief investment officer at Spectrum Wealth Management

** Nvidia gains 2.6% in choppy trading

** AI server maker Dell DELL.N rises 2.3%; Super Micro Computer SMCI.O, which had rallied over 12% on Wednesday, down 2.5%

** Vertiv Holdings VRT.N, which designs and builds data center infrastructure, gains 5%

** Power companies, which are expected to see a surge in demand from energy-intensive data centers needed to develop AI technology, tick higher, with Constellation Energy CEG.O rising 3.4%

** Vistra VST.N gains 6.5%; VST reports fourth-quarter income vs. year-ago loss on Thursday

** Nuclear startup Oklo OKLO.N jumps almost 10%

** Chipmakers Broadcom AVGO.O, AMD AMD.O and Micron Technology MU.O rise about 2% each; iShares Semiconductor ETF SOXX.O gains 1%

** Megacap tech names gain; Alphabet GOOGL.O up 1.1%, Amazon.com AMZN.O rises 1.8% and Meta Platforms META.O adds 1.5%

** Data analytics firm Palantir Technologies PLTR.O - a retail favorite to trade AI - advances 3.3%

(Reporting by Shashwat Chauhan and Medha Singh in Bengaluru)

((Shashwat.Chauhan@thomsonreuters.com))