Taken from CNBC’s Daily Open, our international markets newsletter — Subscribe today

After finishing last month on a strong note, markets lost their momentum, stumbling on Monday, tripped over by a sell-off in crypto.

All three major U.S. indexes snapped their 5-day winning streaks as bitcoin, the world’s largest cryptocurrency, dropped around 6% to trade below $86,000, putting downward pressure on the stock market.

It was bitcoin’s worst day since March. The digital currency late last month fell below $90,000 for the first time since April and has since struggled to stay above that mark.

Even as odds for the Fed’s expected year-end Christmas gift of a rate cut rise, investors seem to have put crypto on the “naughty list.”