system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When they say the stock market lost 20 Billion dollars in a day, where does that money go?
gpt
If someone determines that Jon Voigt did not previously own your car, so that it is only worth $2000 instead of the $10,000 you thought, then you haven't actually lost $8000, and that $8000 hasn't gone anywhere. It's just that the opinion of the public as to the worth of your asset is now less. 

This is exactly how the sharemarket works.