Nvidia has suffered its biggest one-day loss in market capitalization, paring over $280 billion in value, after the United States Department of Justice (DOJ) reportedly issued an antitrust subpoena. Shares in Nvidia (NVIDIA) closed down 9.5% on Sept. 3 at $108, shaving $278 billion off its market cap. It’s the largest single-day value wipeout for any stock in the history of the US share market, per Google Finance data. Its shares continued to fall more than 2% to a low of $105 in after-hours trading. The sharp decline came as the DOJ sent a subpoena to Nvidia and several other companies as the…