Black Monday, October 28, 1929 was a day in the Wall Street Crash of 1929 that saw major stock market upheaval. As soon as the opening bell rang on Oct. 28, prices began to drop. By the end of the day, the Dow had dropped 13%. Stocks continued to fall over subsequent weeks, finally bottoming out on November 13, 1929. The country glided into the Great Depression. Companies incurred huge layoffs, unemployment skyrocketed, wages plummeted and the economy went into a tailspin.