Thinner markets, of course, mean that it doesn’t take as much to move prices as it once did. For an example, look no further than a week ago, Saturday, Feb. 5, when bitcoin finally broke above $40,000 and stayed there for the first time in over a week. Volumes the previous day were $16 billion, and on Saturday they were $25 billion. Again, these figures are low even by recent standards, but they serve as a reminder that it doesn’t take much to move a market.