The sharp pullback in Nvidia shares Monday cost investors $592.7 billion in paper losses as investors fled the stock amid rapid advancements at [China's DeepSeek](

Nvidia is once again the most valuable U.S. company, outranking Apple for the first time since late November. A rise in the chip maker's stock meant it ended Tuesday with a market capitalization of $3.

Chinese startup DeepSeek has debuted an AI app that challenges OpenAI's ChatGPT and other U.S. rivals, sending a shock through Wall Street.

Monday's tech rout has brought no shortage of big numbers on Wall Street, and here's another to keep in mind: $441.9 billion. That's the amount of market capitalization that Nvidia has shed, based on intraday activity.

Rebounding tech stocks drove U.S. indexes higher a day after they tumbled on doubts about the artificial intelligence frenzy.

On Wednesday, the Dow Jones Industrial Average (DJIA) remained steady, hovering around 44,700, shedding around 130 points but holding steady through the midweek market session. The major equity index is currently near its all-time highs above 45,000, but stock traders still have a bit of work to do to push bids back into those record peaks.

DeepSeek was created by a top Chinese quantitative trading firm. It’s not unusual for Wall Street quant luminaries to try their hand at tech.

NASDAQ is under huge pressure due to strong sell-off in tech stocks. Interestingly, NVIDIA is not the worst performer in the NASDAQ index today. Marvell Technology and Broadcom were down by 18% in today’s trading session amid worries about the impact of DeepSeek.

Wall Street’s superstars tumbled Monday as a competitor from China threatens to upend the artificial-intelligence frenzy they’ve been feasting on.

Wall Street’s superstars tumbled Monday as a competitor from China threatens to upend the artificial-intelligence frenzy they’ve been feasting on.

ET, the Dow Jones Industrial Average rose 0.14 per cent, the S&P 500 gained 0.49 per cent, the Nasdaq Composite gained 1.24 per cent