The market rally had a strong week, but highly valued growth is "out of bounds," such as ARK stocks Tesla, Square and Coinbase.
History suggests a big decline may be on the horizon. But if you're mentally and financially prepared, it could be a huge moneymaking opportunity.
The stock market continued to move higher Friday, with the Dow Jones Industrial Average (DJINDICES: ^DJI) and S&P 500 (SNPINDEX: ^GSPC) rising to record closes. Stocks tracked by the S&P Midcap 400 Index are up 74% over the past year.