Coinbase is known as the largest platform for Bitcoin investors in the United States. Beginning Tuesday its users can now buy and sell Bitcoin Cash, a coin previously unavailable for trade on the site since its inception on August 1, 2017. The impact was immediate as the price of Bitcoin fell to a low of of $15,000 before going back up to around $17,300 after the announcement was made. Although other exchanges have been trading Bitcoin Cash since the split in August, Coinbase did not do so and told users it would provide support by January 2018. With this new announcement, Coinbase says all investors of Bitcoin at the time it forked would be provided with Bitcoin Cash.

https://www.cnbc.com/2017/12/19/bitcoin ... ading.html