Which 1989 U.S. leveraged-buyout collapse is widely regarded as the event that triggered the October 13 mini-crash?

The collapse of the proposed United Airlines buyout is widely regarded as the trigger for the 13 October 1989 mini-crash.

United Airlines’ parent company had agreed to a leveraged buyout led by an employee group and financial backers. The proposed transaction depended heavily on debt financing and complicated negotiations. On 13 October 1989, the deal failed after financier Shearson Lehman Hutton withdrew from the arrangement.

The announcement shocked investors because the leveraged-buyout market had become an important part of late-1980s finance. The Dow Jones Industrial Average fell sharply that day, while the S&P 500 recorded a major one-day decline. The episode became known as the Friday the 13th mini-crash.

The event occurred two years after Black Monday in 1987, but it was a separate market shock. It also reflected broader concerns about junk bonds, takeover financing, and the sustainability of highly leveraged corporate deals. The proposed transaction was not the completed acquisition of United Airlines; it was a buyout attempt that collapsed before closing.