How should retail investors protect ourselves for the potential extreme market volatility caused by the SpaceX, OpenAI, and Anthropic's IPO?

SpaceX, OpenAI, and Anthropic are allowed to join major indexes like the Nasdaq 100 shortly after their IPOs due to a Nasdaq rule change implemented on May 1. Historically, companies were required to season in the public markets for several months to ensure price discovery. These mega-cap IPOs can be added to the Nasdaq 100 in just 15 trading days instead of the typical multi-month waiting period, and they may receive an index weighting based on larger multiples of the shares they float, allowing them to instantly become major drivers of the index.

I am not sure in the near future, there may be a huge sell-off of Nasdaq stocks, but at the same time I think it is also ridiculous to simple sell right now. I would like to hear your insights: How should retail investors protect ourselves from the potential extreme market volatility caused by the SpaceX, OpenAI, and Anthropic's IPOs?