Adjusted Debit Balance

This one's about margin accounts, i.e. how much in the red for margin are you after adjusting for...stuff.

Your max borrow under Reg T is 50 percent, so if you have 100k in your brokerage account, which has been set up as a margin account, you can borrow up to 50k, but that's after adjustments.

So like...what adjustments? Well, things like interest charges and sometimes liquidity discounts, i.e. in thinly traded shares, if you wanted to just get out, you can't without dropping the price a ton.

So more adjustments often then come in from the broker imposing their own set of 'safety rails' on top of the Reg T margin structure.