IB auto liquidate certain futures contracts

Here's the schedule of cutoff times: https://www.interactivebrokers.com/en/index.php?f=deliveryExerciseActions&p=physical

Looks like they started liquidating after 9AM ET today.

 

Ahh, well, there you have it.

 

thanks! mystery solved! still sucks. Luckily it was only a small amount.

 

I think there is an email from IB about liquidation warning?
I received mine every time I need to roll my ZN.

 

For physical settled contracts, what else do you suggest if liquidity dried up towards day end and you had to take delivery?

 

Every now and then I also receive such warning messages, if I'm holding a futures contract with physical delivery and it gets approximately one week to its liquidation date.