The growth of a $1,000 investment in the cryptocurrency bitcoin and S&P 500 in June 2010 is shown in the chart below. The bitcoin investment would have shot up like rocket to reach towards the $100 million mark compared to the tiny rise with the S&P 500:
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Source: Chart of the Day: Bitcoin vs. S&P, Canadian Investment Review
Below is the long=term chart of bitcoin:
Source: Word Coin Index
Despite the astronomical growth most retail investors should not invest in crypocurrencies of any sort.