What was the name of the October 13, 1989 U.S. market plunge linked to the collapse of a leveraged buyout?

The October 13, 1989 U.S. market plunge was called the Friday the 13th mini-crash.

The decline followed the collapse of financing for a proposed leveraged buyout of United Airlines' parent company, UAL Corporation. The deal depended on borrowed money, and when the financing arrangement failed, investors reacted sharply. The Dow Jones Industrial Average fell 190.58 points, or about 6.9 percent, in one session.

The Nasdaq Composite experienced an even larger percentage decline, losing more than 6 percent. Although the market recovered part of the fall afterward, the episode highlighted how heavily leveraged corporate deals could affect wider investor confidence.

The nickname distinguishes this event from Black Monday in October 1987 and the Flash Crash of May 2010. It is also called the mini-crash because its one-day drop was severe but did not produce the prolonged global shock associated with 1987.