Factbox: Stock Exchanges Revise Trading Rules, Circuit Breakers as Volatility Surges – The New York Times

Factbox: Stock Exchanges Revise Trading Rules, Circuit Breakers as Volatility Surges – The New York Times

Business | Factbox: Stock Exchanges Revise Trading Rules, Circuit Breakers as Volatility Surges. Factbox: Stock Exchanges Revise Trading Rules, Circuit Breakers as Volatility Surges. The New York Stock Exchange will temporarily close its trading floors and move fully to electronic trading from March 23.. ** The country's securities regulator banned short-selling on the Athens stock exchange until April 24 to shield the equities market from volatility. ** The stock exchange tightened circuit breaker rules, where a more than 5% drop on its main stock index will see trading halted by 30 minutes, compared with the 10% previously.