Here is another, more technical analysis of the stockmarkets. Its conclusions are:
A major stockmarket crash probably worse than 2008 looks imminent, and by imminent we mean probably within weeks, possibly as far as out as two to three months, but perhaps within days. A break below 2040 on the S&P500 Index may trigger it. Virtually all stocks on the broad market should be sold, and bear ETFs and possibly Puts bought before the breakdown.
End of quote.
You may find the 7 year pattern he shares to be of interest.