On the 4th, all three key stock indices on the New York Stock Exchange experienced declines, with technology stocks spearheading the downturn. Earlier, the well - known 'short seller' Michael Burry disclosed that he had taken short positions worth over US$1 billion on tech firms like Nvidia. According to regulatory disclosures released on the 3rd, Burry had invested roughly US$1.1 billion in buying put options for Nvidia and software firm Palantir. Put options are a kind of financial derivative that generates profits when stock prices fall. The disclosures also indicated that at the same time, he had purchased call options for oilfield services company Halliburton and pharmaceutical company Pfizer. In the financial market, call options allow the holder to buy a stock at a specified price within a certain time frame, and they typically profit when the stock price rises.
