The Dow Jones Industrial Average reached a closing low of 41.22 during the 1929–1932 Wall Street crash.
That low occurred on 8 July 1932, almost three years after the October 1929 panic. The long decline shows why the crash should not be understood as a single day. The Dow had climbed to a pre-crash closing high of 381.17 in September 1929 before losing nearly 90 percent of its value by the 1932 bottom.
The market later recovered, but it took many years to return to its 1929 peak. The prolonged fall coincided with bank failures, deflation, unemployment, reduced industrial output, and international economic distress during the Great Depression.
The exact figure is a closing value, not an intraday low. Historical index values are also sometimes presented with different rounding conventions. Another common mistake is assigning the 1932 bottom to October 1929; October marked the famous panic, while the ultimate Dow low came much later.