No insurance
When you buy shares through any broker in the US, you get insurance of $ 500,000 in both cash and shares. FDIC insures cash, shares-SIPC. This means that if your broker exits the game along with your deposits, the state will reimburse you for your losses up to $ 500,000. This insurance allows investors to relax.
Cryptocurrency exchange does not insure neither one nor the other. Coinbase and Gemini are the only ones who insure cash deposits.
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