Strikeless Options possible?

No expert here...Just enjoy reading and studying Greeks.

What happens if the pre market is down 20-30% and there are no "asks" at any price? 1987 and 2000-2001 had similar issues...
 
No expert here...Just enjoy reading and studying Greeks.

What happens if the pre market is down 20-30% and there are no "asks" at any price? 1987 and 2000-2001 had similar issues...

Well, the 20% limit would be in effect during the post-close ETH I suspect. So it could never be a 30% drop during ETH.

BUT! What happens if there is a 20% drop in post-close...Can there be another 20% drop in pre-open, or is the 20% limit in effect for the pre-open on next trading day?
 
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