** Shares of Nvidia NVDA.O drop 1.1% premarket after reports say it ordered suppliers to halt H20 chip production
** CEO Jensen Huang is visiting chip foundry partner TSMC 2330.TW in Taiwan while navigating friction between China and the U.S. over access to its industry-leading AI chips
** Two people told Reuters that Foxconn 2317.TW was asked by NVDA to stop work related to the H20 chip
** The Information reported earlier this week that Amkor Technology AMKR.O and Samsung Electronics < 005930.KS> were also instructed to stop production on the chips
** U.S. President Donald Trump earlier this month opened the possibility of advanced chips beyond H20 being sold in China
** The AI chip giant is set to report quarterly results after markets close on August 27
** As of last close, NVDA up 30.3% YTD vs the Philadelphia SE Semiconductor index's .SOX rise of 12.5%
(Reporting by Twesha Dikshit)
((Twesha.Dikshit@thomsonreuters.com))