On July 21, the US stock options market showed a trend of differentiation, with trading activities of TSMC and Nvidia being particularly noteworthy.

TSMC's options trading volume reached as high as $326 million, dominating the bullish options leaderboard. However, the net selling volume hit $199 million, accounting for more than 60% of the total trading volume. Particularly, large block trades in the $200 to $220 strike price range suggest that institutional investors may be taking profits following the company's record second-quarter earnings report.

In contrast, although Nvidia ranks second, its Options trading pressure is relatively small, and market sentiment is more neutral. This difference reflects investors' varying expectations for these two semiconductor giants.

It is worth noting that Tesla appears on both the bullish and bearish Options lists. The company's bullish Options trading volume is $134 million, while the bearish Options trading volume has reached $178 million. There is a net sell of $17.2366 million in bullish Options, while the buy-sell ratio for bearish Options is as high as 2.9:1. This phenomenon indicates that investors are actively building defensive positions ahead of the earnings report set to be released on July 23.

The trends in these Options markets provide us with valuable insights, reflecting the differing attitudes of investors towards various tech giants, as well as a cautious stance regarding the upcoming financial reports. Market participants are managing risk through Options strategies while also seeking potential investment opportunities.