October has lived up to its reputation as the month when crashes occur. Except the crash this time was in bitcoin

BTCUSD rather than the stock market.

At one point this past Sunday, bitcoin was 15.4% below its all-time high set just a couple of days earlier. That certainly qualifies as a crash; it’s larger than the 1929 crash, when the Dow Jones Industrials Average DJIA fell 12.8%.