Bitcoin Plunges 20% -- Is the Rally Over?

It's been a tough week for cryptocurrencies in general, and bitcoin in particular. After reaching an all-time high of almost $20,000 just a week ago, bitcoin hit a low of $10,400 on Coinbase before rebounding. Here's where bitcoin sits now, and what investors need to know today.

Here's a look at the five largest cryptocurrencies by market capitalization, and how much each has changed over the past 24 hours.

Cryptocurrency Name (Code)

Source: Fool.com