It seems Coinbase's go to strategy every time markets are volatile. In case people are wondering why is this a recurring problem - this simply perils of Market Making in a volatile market. As a market maker for customer orders Coinbase needs to fulfill both sides. So to make money they buy from customers at low price and sell back at a high price. So they are collecting spread between bid and ask to make money. But w…
Coinbase are not market makers...
But, when buying and selling from users, yes they are. They don't create a two way market on coinbase.com. If they did, it will be called an "exchange".