On June 8, Coinbase, a cryptocurrency exchange, announced the launch of its fixed-action feature on its official Medium. Fixed investment based on the concept of average cost method (DCA) is a common investment strategy. Coinbase gives a specific case: If you invest $1,600 in Litecoin on October 15, 2018, the value after 7 months is $2721.17, but if you change your strategy to invest $200 per month, you also invest in the same amount. $1600, but the value after 7 months is $3208.02. Fixed investment can both share costs and reduce the impact on market liquidity.