Approximately 25% of the volume in the last couple of days has come in three 15 minute candles overwhelmingly as sell volume.
Binance and Bitfinex showed a similar pattern to Coinbase, but not as extreme.
Can anyone think of a reason for this much volume all one way, other than a way to fade the price on the cheap? If you wanted to keep the price down, would there be a more economical way?
At least in the case of Bitcoin and Ethereum on Coinbase, there is no correlation to the volume - that is the person in question was not selling to buy bitcoin with the proceeds, at least not immediately