U.S. stock exchanges have agreed with regulators to include a “kill switch” to stop trading during emergencies

  • Part of a package of 5 reforms agreed to in a meeting between Securities and Exchange Commission Chair Mary Jo White and exchange representatives
  • Drafting of plans to establish testing and disclosure protocols about systems changes for securities information processors (SIPs, which disseminate stock quotes and other data) will now begin
  • Also plans for addressing “how regulatory halts are communicated, assess their other critical infrastructure systems and review their current rules for busting trades and re-opening trading after a halt”

Reuters