Black Friday

October 24, 1929 - Black Thursday

The first sign of trouble was on October 24th, 1929. At that time, the stock exchange usually traded around 4 million shares each trading day. But on Black Thursday, a record 12.9 million shares were exchanged.
The systems for tracking the market prices could not keep up with the trading volume and that may have contributed to panic selling on that day. At one point, ticker tapes were running nearly 90 minutes behind the market. By the end of the day, the market had fallen 33 points or around 9%.

October 28, 1929 - Black Monday

After Black Thursday, the market bounced back a bit on Friday. This lead to a sense of security over the weekend as investors felt the market could rebound. However, market conditions quickly deteriorated again on Black Monday - October 28th, 1929 - and high trading volumes once again put pressure on the flow of information.On Black Monday, trading volumes were near 9.25 million shares and market confidence declined sharply. By the end of the day, the market was down another 13%.

October 29, 1929 - Black Tuesday

Black Tuesday - October 29th, 1929 - is that day that most historians agree dealt the final blow to the Roaring 20s and was the starting point of the Great Depression. On Black Tuesday, a record 16.4 million shares were traded. The ticker tape machines fell behind by nearly 3 hours. With all hopes of a market recovery now gone, panic selling continued and the market fell another 12%.