According to the blogger called Bitfinex'ed, the wild swings that we have been seeing on Coinbase and GDAX in Bitcoin cash is as the result of a bot he dubbed "Picasso".
Apparently, the bot is a big driver behind the price discrepancy in the price on Coinbase and other exchanges such as Bitfinex. The bot could be trying to artificially inflate the price on Coinbase, buy the funds on Bitfinex and make an arbitrage profit.
He claims that the bot was also responsible for the massive buy orders that were placed on Bitcoin cash when it was trading close to $8,000 on Coinbase. Algorithm error?
https://www.coinbureau.com/analysis/trading-bot-behind-coinbase-pricing-discrepancies/Do you think that this Bot is actually behind the market manipulation? Who do you think could be controlling it? Bitfinex'ed is of the opinion it is being operated by his arch nemesis.