AFAIK he is trading crypto-currencies at an exchange he has not named. There is no cental limit order book or even common clearing among crypto exchanges, each is self contained. It is quite possible that there are neither competing auto-traders nor prevalent algo execution at his chosen exchange. In my experience, such isolated LOB's stll encapsulate a good bit of information. Ditto isolated position books.IOne would think that the orderbook doesn't contain much information these days
