[neogodless]

I'm not sure how much of "the stock market" TSLA makes up, but at current valuation, it makes up 1.9% of VTI (so that's a good estimation). So it could blink out of existence and only take VTI down 2%. (2% is significant of course.) But more likely might be a slow erosion while other components grow, making index funds and "the entire stock market" quite resilient to such a shock.

[fearmerchant]

It appears you're using a Vanguard total market fund. Nothing wrong with that, it's clearly broader than the SP500, but I suspect more folks are familiar with the latter. In that spirit folks might be interested to know it's not much different. If Tesla disappeared tomorrow with would be 2.4% of the SP500.