Getting your player ready...
WASHINGTON — Federal regulators are considering changes in how stock exchanges cut off trading when there’s a dramatic shift in the market’s value.
The Securities and Exchange Commission put proposed changes in so-called “circuit breakers” out for public comment Tuesday. Those are measures that automatically halt trading if the market falls by certain percentages. The SEC wants smaller market declines to trigger halts, but it also wants to shorten the stoppages.
They now stop trading if the Dow Jones industrial average tumbles 10 percent, 20 percent or 30 percent. The new benchmarks would be drops of 7 percent, 13 percent or 20 percent in the Standard & Poor’s 500-stock index.



