Hello. Can someone help me with this question below? Thank You
Does Robinhood hold custody of the bitcoin I buy from them? Do they have the private keys? Or does someone else hold custody. Thanks!
Does Robinhood hold custody of the bitcoin I buy from them? Do they have the private keys? Or does someone else hold custody. Thanks!
Robinhood says they keep all coins in their custody, yes. See here:
Quote
Cryptocurrencies that you purchase on the Robinhood platform are stored in a mix of hot (online) and cold (offline) storage. We use cutting-edge security measures that are both process and technology-driven to secure your coins.
If you transfer the coins to your own Bitcoin address, then you own the Private key and only then "own" the coins. Wallet providers also work in the same manner. 
Unfortunately, you can't actually withdraw coins from Robinhood, even though the coins are supposedly held in their custody (not derivatives). It's strictly an investment platform where they hold all assets. Supposedly, cryptocurrency deposits and withdrawals are coming in the future.