Coinbase, the public-listed U.S. crypto exchange, saw a 13% increase in its shares yesterday, following an announcement from exchange operator Cboe regarding their collaboration with Coinbase to introduce a spot bitcoin exchange-traded fund (ETF). The application to initiate a bitcoin ETF by Fidelity was refiled by Cboe with the U.S. Securities and Exchange Commission (SEC) last Friday. Coinbase was specified as the crypto surveillance platform.