Bank of England explores trading 'kill switches' to contain AI meltdowns

The Bank of England is investigating the use of trading "kill switches" to prevent potential financial market disruptions caused by artificial intelligence systems. The initiative aims to contain risks from AI-driven trading meltdowns by enabling rapid shutdown mechanisms.

Background

The Bank of England is examining "kill switches" — emergency stop-buttons that could instantly halt AI and algorithmic trading if markets go haywire. The fear: high-speed AI trading bots could trigger a flash crash (a sudden, severe market collapse) faster than any human can react. This follows the infamous 2010 Flash Crash, when the Dow plunged ~1,000 points in minutes due to automated trading. "Kill switches" already exist at some exchanges, but the BoE wants a regulated, system-wide version to prevent cascading meltdowns. Regulators globally are struggling to oversee AI in finance — algorithms now execute most trades — and worry that interconnected AI systems could behave unpredictably, amplifying losses. For central banks, whose core job is financial stability, this may require new and controversial powers.