What is DeepSeek, the Chinese AI company upending the stock market?

DeepSeek Deep Sixes the Stock Market. How Far the S&P 500 Could Fall.

Stock market today: Nasdaq clobbered, S&P 500 tumbles as AI fears rock Nvidia, tech stocks

Defensive health care sector beating market and one name is breaking out, according to the charts

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Nasdaq Announces Mid-Month Open Short Interest Positions in Nasdaq Stocks as of Settlement Date January 15, 2025