What was the 1980 silver-market collapse, triggered by the Hunt brothers, called?

The 1980 silver-market collapse triggered by the Hunt brothers was called Silver Thursday.

Silver Thursday occurred on 27 March 1980, when the price of silver plunged after regulators and exchanges changed trading and lending rules. Nelson Bunker Hunt and William Herbert Hunt had accumulated a huge position in silver, helping drive the metal’s price dramatically higher during the late 1970s.

As margin requirements rose and buyers could no longer finance purchases in the same way, silver prices fell sharply. The Hunts faced margin calls, and fears about their ability to pay unsettled financial markets. A group of banks eventually arranged emergency credit to help prevent a wider financial disruption.

Silver Thursday was a commodities-market collapse rather than a conventional stock-exchange crash. Its nickname is often compared with Black Monday, but the event concerned silver futures and physical silver as well as broader financial confidence.