You are not allowed to trade opposing positions and submit opposing orders in separate accounts under the control of the same entity/person. Has nothing to do with cross trades because cross trades are off exchange. Yours concern on exchange orders and executions.
FINRA will go nuts with this. A lot will depend on who the contra account was. You control both accounts? Be prepared for the worst-case scenario, including possible fines and bars from trading. It would be prudent to consult a securities attorney.
you will likely be banned from IB permanently. Since it wasn't a pattern, you will likely not be brought up for disciplinary hearing.
I have had accounts with IB for more than 25 years, both indiv & corp. Recently I re-activated an indiv account, just to separate some stock option trading,mostly from my futures trading. IB hounded me for weeks, to prove I was a "real" person for the new account -- even though both indiv accounts had the same name, address, soc sec#, etc.
I believe I did nothing wrong. Even if there is a cross trade, it is exchange’s fault. They made my limit pegged order marketable
The mistake was on your part. In the times we live in you never close an account or let it become inactive. Make sure it doesn't drop below a certain level resulting n closure. Do an occasional activity.
you can’t trade against two accounts you control. it’s considered market manipulation. Likely outcome is that IB will close your accounts
that occurs by incidence, not intentionally. So ib reviewed such cases a few times, never said some thing serious
Of course, your next post will be they reopened your account and bought you a toaster. You know you've asked similar questions before. Given your history, the question may become civil fraud or criminal fraud. Unless the whole thing is bullshit, ask to talk to one of the 24s at IB, Posting your transgression online is really foolish.