Massive change in Options price in the last second

[Ayn Rand]

I am telling you on the close they just make a big shift. Will only be ratified within the first 20 -30 mins,

 

[gowthamn]

I am telling you on the close they just make a big shift. Will only be ratified within the first 20 -30 mins,

Ratified after market open the next day or during pre market the next day

 

[Atikon]

View attachment 231000

And the bid/ask chart during the last 30 minutes of trading:
View attachment 231002

are those double bids or single ask/bids spikes? These "spoofing" spikes is why I have double Bid in IB for my stop losses, Would love to hear how they come about on underlyings like the SPX where it should be so liquid, there is no chance of one MM move the market.

 

[guru]

are those double bids or single ask/bids spikes? These "spoofing" spikes is why I have double Bid in IB for my stop losses, Would love to hear how they come about on underlyings like the SPX where it should be so liquid, there is no chance of one MM move the market.

Single.