The current futures limits are as follows:
S&P 500 Futures: -60
Dow Jones Futures: -550
Nasdaq Futures: -85
They can drop no further until the market opens. These numbers are set quarterly, based on a 5% loss of the markets' values -- not current values, but the values when they were set. Then, these rules go into effect:
Limit extended to 10% at open.
Trading halted for 2 minutes if reached.
Limit...
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