What happens to my money if Coinbase shuts down?

If Coinbase were to shut down, what would become of the funds I've stored there? Would I still have access to my cryptocurrency holdings? And if so, how would I be able to retrieve them? Are there any steps I should take now to protect myself from such an eventuality? I'm concerned about the security and stability of my investments, and I want to ensure that I'm prepared for any potential issues that may arise.