Which 1989 event caused a sharp global stock-market fall after United Airlines’ buyout collapsed?

The 1989 event that caused a sharp global stock-market fall after United Airlines’ buyout collapsed was the Friday the 13th mini-crash.

On Friday, 13 October 1989, the Dow Jones Industrial Average fell 6.91%, its second-largest one-day point decline at that time. The immediate trigger was news that a leveraged buyout of United Airlines had failed.

The proposed transaction had been backed by a group led by Shearson Lehman Hutton. Investors were already worried about high leverage, takeover financing, and the fragility of the late-1980s market, so the deal’s collapse intensified selling.

The episode was smaller and shorter than the 1987 crash, but it demonstrated how corporate-finance news could affect markets worldwide. It is known as a mini-crash because the decline was severe without becoming a prolonged market collapse.