No margin call , only other trades were options that were held overnight or multiple days. The only trades that were opened/ closed the same day were SSF. I have a universal account with IB. Just seems very strange for them to unilaterally adopt this rule without any regulatory change in status..
here is IB email
Dear Trader,
Yes, single stock futures now count toward the PDT designation.
If you have any further questions, please feel free to contact us again.
Regards,