What was the name of the October 29, 1929 trading day when the Dow fell nearly 12%?

October 29, 1929, is known as Black Tuesday, the most famous single trading day of the Wall Street Crash of 1929.

The Dow Jones Industrial Average fell 30.57 points, or 11.73%, during the session. The decline followed Black Thursday on October 24 and Black Monday on October 28, when panic selling had already intensified. Heavy trading overwhelmed the New York Stock Exchange as investors rushed to sell shares.

Black Tuesday did not by itself cause the entire Great Depression. The crash exposed excessive borrowing, speculative buying, and weaknesses in the banking system, while the wider economic downturn developed over subsequent years. The Dow continued falling until reaching its 1932 low.

A common mix-up is confusing Black Tuesday with Black Thursday. Black Thursday refers to October 24, 1929, whereas Black Tuesday refers to October 29, the day associated with the larger percentage decline and enormous trading volume.