Why do companies go bankrupt when their stock price drops?

Miqael K asked: If companies only make money from stocks during IPO, why do they go bankrupt when the stock price drops? I can’t make the connection.

How does General Motors going bankrupt affects our economy?

Shane Uehara asked: Why can’t we let it go bankrupt if it’s not making money? Why would you give money to a company that can’t make money back?

Is it possible that at some point a foreign auto company could take over GM with 51% by their decreasing stock price?

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