"when Schwab implements the changes for the calendars" They are not going to implement any changes.
I Have 2 C.Schwab accounts and the Calendars trades are considered just like TD.
Trade list is there...the single on the 23oct are there to add the closed trades of expired dates
Schwab definitely did change their margin calcs for calendars for index options. The short leg is considered naked. Left Shwab after over a decade for TT.
