October 29, 1929: "Black Tuesday" - prices fall sharply and the stock market "crashes." This "crash" produces a record volume of nearly 16 million shares. (AP Photo)

1932: The Dow reaches bottom in July, down 89 percent from its 1929 peak. (AP Photo)

1933: Franklin Roosevelt is inaugurated as the 32nd President of the United States. The Securities Act of 1933 mandates registering new issues and establishes federal disclosure requirements. (AP Photo)

1934: The Securities Exchange Act of 1934 establishes the Securities and Exchange Commission (SEC). (AP Photo)

1943: Women work on the Stock Exchange trading floor for the first time ending the tradition of men only. (AP Photo)

August 15-16, 1945: The Exchange closes August 15-16 for V-J Day. (AP Photo/Matty Zimmerman)

1949: The longest bull run market on record begins. Stock prices will rise, without significant interruption, for the next eight years. (AP Photo)

1952: The NYSE, in its first shareowner census, finds that 6,490,000 Americans own common stock. (AP Photo/Bob Kradin)

Oct. 10, 1953: Volume of 900,000 shares marks the last daily volume under 1 million shares. (AP Photo)

1954: The Dow Jones Industrial Average surpasses its 1929 peak for the first time. (AP Photo)

Sept. 24, 1955: President Dwight D. Eisenhower suffers a heart attack, creating a large wave of selling at the NYSE. (AP Photo)

Nov. 22, 1963: The assassination of President Kennedy forces an emergency early closing of the Exchange to avoid panic selling. (AP Photo)

1972: Dow Jones Industrial Average closes over 1,000 for the first time. Pictured above is Edward Jones, known for the Dow-Jones stock averages. (AP photo)

1982: The NYSE experiences its first 100 million share day. (AP Photo/Dave Pickoff)

March 28, 1985: The United States' 40th President, Ronald Reagan, becomes the first U.S. President to visit the NYSE while in office. (AP Photo/Bob Daugherty)

Oct. 19, 1987: The Dow Jones Industrial Average experiences its largest one-day percentage drop in history at that time, 508 points or 22.61 percent. (AP Photo/Lennox McLendon)

1992: The average daily volume surpasses 200 million shares. (AP Photo/Kathy Willens)

May 1992: Former President Ronald Reagan and former Soviet President Mikhail Gorbachev tour the trading floor as the NYSE celebrates its 200th anniversary. (AP Photo/Barry Thumma)

1996: NYSE launches real-time stock tickers on CNBC and CNN-FN. Previously, market data had been delayed 20 minutes. (AP Photo/Stuart Ramson)

Oct. 1997: On October 27, the Dow Jones Industrial Average plummets 554 points. The next day, volume tops 1 billion shares for the first time. (AP Photo/Doug Kanter)

March 19, 1999: The Dow Jones Industrial Averages tops 10,000 for the first time. (AP Photo/Adam Nadel)

March 16, 2000: The Dow experiences a massive one-day point gain - 499.19 points - to close at 10,630.60. (AP Photo/Richard Drew)

Jan. 4, 2001: Volume of trading on the NYSE exceeded 2 billion shares for the first time, when 2.129 billion shares changed hands. (AP Photo/Beth A. Keiser)

Sept. 2001: NYSE closes for 4 days after the September 11 terrorist attacks. On September 17, the Dow plummets 684.81 points, closing at 8,920.70 - its steepest point decline in a single day at that time. (AP Photo/Beth A. Keiser)

2002: The Sarbanes-Oxley Act, which aims to protect investors by improving the accuracy and reliability of corporate disclosures, goes into effect. (AP Photo/Doug Mills)

Jan. 31, 2007: President Bush becomes the second sitting President to visit the Exchange during the trading day. (AP Photo/Richard Drew)

March 19, 2008: Visa's IPO is the largest domestic initial public offering in U.S. history and the third largest initial public offering worldwide at that time. (AP Photo/Richard Drew)

March 9, 2009: Dow Jones industrials hit a 12-year low of 6,547.05. (AP Photo/Richard Drew)

Oct. 14, 2009: The Dow Jones industrial average climbs back above 10,000, a mark not seen since October 2008. (AP Photo/Richard Drew)