BTC's sudden spike this morning wiped out all the bulls... 75K is the convergence point of several important moving averages and also the starting point of the September 16th rally. Many people placed their stop-loss orders very close to this level. There's not much below the current price that could trigger a liquidation. Conversely, if this was just a margin call, then now is the time for a dramatic comeback. Stop-loss orders for long positions should be placed at the level where the price spiked earlier.