Confused about SPY 0dte cut off time for assignment

This is what I read - SPY options stop trading at 415 pm et. They are automatically exercised based on the 4pm closing price of SPY.

So lets say I have short call on SPY 0dte at 570 call - and at 4.15 pm the spy is at 567.48 -

can I still be assigned if the SPY moves to 570.01 between 4.15 pm to 5.30 pm?

asking because I read somewhere that it be exercised until 5.30 pm

 

Option buyers have until 17:30 to override automatic executions. They have to notify the brokers explicitly.

https://www.nasdaq.com/articles/aut...nd-other-options-expiration-issues-2010-11-18

IBKR for example has this option available until 17:25
https://www.interactivebrokers.com/en/trading/delivery-exercise-actions.php

 

Yes but my question is - until what time I should be worried ?
If my short call is out of the money at 4.15 pm or 5.30 pm

To clarify spy price was always below 570 (which is my short strike) until 4.15 pm
But if by chance it goes above 570 between 4.15 pm to 5.30 pm - I can still be assigned?

 

Read my post again

 

I've been told that "some" are permitted to exercise well past the cutoff,as late as 8 pm ET

 

Ok I read 5.30 pm but you could be right..
question is as long as price does not move beyond my short strike - I am safe from any assignment correct?

 

I think that’s on a best efforts basis and only some brokers and dealers allow it.

 

Thsts pretty much what I was told

 

It's true...a few times I was assigned very late into the evening.

Once I was glad to be assigned since the close on my sell put ended where I was to be exercised but after hours the stock moved higher and I noticed after 12am the shares in my portfolio, but could not sell the shares in the overnight trading session (Robinhood 24 hr trading) as I found out later they pulled the shares away from me....

 

You should be worried the whole time you can't afford assignment because you can get early assignment too.