https://en.wikipedia.org/wiki/Wall_Street_Crash_of_1929


Crowd gathering on Wall Street after the 1929 crash

The Wall Street Crash of 1929, also known as the Stock Market Crash of 1929 or the Great Crash, was a major stock market crash that occurred in late October 1929. It started on October 24 ("Black Thursday" ) and continued until October 29, 1929 ("Black Tuesday" ), when share prices on the New York Stock Exchange collapsed.

It was the most devastating stock market crash in the history of the United States, when taking into consideration the full extent and duration of its after effects. The crash, which followed the London Stock Exchange's crash of September, signaled the beginning of the 12-year Great Depression that affected all Western industrialized countries.

Crash


Overall Price Index on Wall Street right at the moment before crash in 1929 and up towards to 1932 when the price bottomed out

Selling intensified in mid-October. On October 24 ("Black Thursday" ), the market lost 11 percent of its value at the opening bell on very heavy trading. The huge volume meant that the report of prices on the ticker tape in brokerage offices around the nation was hours late and so investors had no idea what most stocks were actually trading for at the moment, increasing panic. Several leading Wall Street bankers met to find a solution to the panic and chaos on the trading floor. The meeting included Thomas W. Lamont, acting head of Morgan Bank; Albert Wiggin, head of the Chase National Bank; and Charles E. Mitchell, president of the National City Bank of New York. They chose Richard Whitney, vice president of the Exchange, to act on their behalf.

With the bankers' financial resources behind him, Whitney placed a bid to purchase a large block of shares in U.S. Steel at a price well above the current market. As traders watched, Whitney then placed similar bids on other "blue chip" stocks. The tactic was similar to one that had ended the Panic of 1907. It succeeded in halting the slide. The Dow Jones Industrial Average recovered, closing with it down only 6.38 points for the day. The rally continued on Friday, October 25, and the half-day session on Saturday, October 26, but unlike 1907, the respite was only temporary.

Over the weekend, the events were covered by the newspapers across the United States. On October 28, "Black Monday", more investors facing margin calls decided to get out of the market, and the slide continued with a record loss in the Dow for the day of 38.33 points, or 13%.

The next day, "Black Tuesday", October 29, 1929, about 16 million shares traded as the panic selling reached its peak. Some stocks actually had no buyers at any price that day. The Dow lost an additional 30 points, or 12 percent. The volume of stocks traded that day was a record that would not be broken for nearly 40 years.

On October 29, William C. Durant joined with members of the Rockefeller family and other financial giants to buy large quantities of stocks to demonstrate to the public their confidence in the market, but their efforts failed to stop the large decline in prices. The massive volume of stocks traded that day made the ticker continue to run until about 7:45 p.m. The market had lost over $30 billion in the space of two days, including $14 billion on October 29.

Dow Jones Industrial Average on Black Monday and Black Tuesday
Date Change % Change Close
October 28, 1929 ?38.33 ?12.82 260.64
October 29, 1929 ?30.57 ?11.73 230.07

After a one-day recovery on October 30, when the Dow regained an additional 28.40 points, or 12 percent, to close at 258.47, the market continued to fall, arriving at an interim bottom on November 13, 1929, with the Dow closing at 198.60. The market then recovered for several months, starting on November 14, with the Dow gaining 18.59 points to close at 217.28, and reaching a secondary closing peak (bear market rally) of 294.07 on April 17, 1930. The Dow then embarked on another, much longer, steady slide from April 1930 to July 8, 1932, when it closed at 41.22, its lowest level of the 20th century, concluding an 89 percent loss rate for all of the market's stocks.

For the rest of the 1930s, beginning on March 15, 1933, the Dow began to slowly regain the ground it had lost during the 1929 crash and the three years following it. The largest percentage increases of the Dow Jones occurred during the early and mid-1930s. In late 1937, there was a sharp dip in the stock market, but prices held well above the 1932 lows. The market would not return to the peak closing of September 3, 1929, until November 23, 1954.

Aftermath
In 1932, the Pecora Commission was established by the U.S. Senate to study the causes of the crash. The following year, the U.S. Congress passed the Glass–Steagall Act mandating a separation between commercial banks, which take deposits and extend loans, and investment banks, which underwrite, issue, and distribute stocks, bonds, and other securities.

After the experience of the 1929 crash, stock markets around the world instituted measures to suspend trading in the event of rapid declines, claiming that the measures would prevent such panic sales. However, the one-day crash of Black Monday, October 19, 1987, when the Dow Jones Industrial Average fell 22.6%, was worse in percentage terms than any single day of the 1929 crash (although the combined 25% decline of October 28–29, 1929 was larger than that of October 19, 1987, and remains the worst two-day decline ever).

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