I've done a decent amount of research about the mechanics of short selling but I still have a few unanswered questions.
In an account with 30% margin requirement and 60k in cash.
Purchase 100k notional of stock ABC and post 30k for margin.
Short 100k notional of XYZ and post 30k of margin.
It's my understanding the purchase of ABC will require a 70k margin loan from the broker to finance the position. (100k less 30k cash collateral)
Will the 100k in cash proceeds from the short sale of XYZ offset the 70k margin loan?
In other words, by putting on this position, will there be any funds borrowed from the broker?