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first time since the 2016 U.S. presidential election after they fell more than the daily limit of 5%

The daily limit is 20%, I believe?

7% = automatic 15 minute stop

13% = another 15 minute stop

20% = stop for rest of day

Those were futures the night of the election...

Futures have a hault at 5%

Normal trading hours have the 7% stop

And from what I read, the futures did halt at 5% yesterday. So it was already sort of expected that the 7% stop would be hit today.