Here are the 6 greatest bear markets as measured by the S&P 500 since 1940.
1) 2007-2016 DOWN 82%
2) Jan/73-Oct/74 DOWN 48%
3) Dec/68-May/70 DOWN 36%
4) Aug/87-Dec/87 DOWN 34%
5) Jan/41-Apr/42 DOWN 32%
6) May/46-May/47 DOWN 29%
1) 2007-2016 DOWN 82%
2) Jan/73-Oct/74 DOWN 48%
3) Dec/68-May/70 DOWN 36%
4) Aug/87-Dec/87 DOWN 34%
5) Jan/41-Apr/42 DOWN 32%
6) May/46-May/47 DOWN 29%

