The line sits $1,000 above your capital.
Not at it. The gap is what pays your bonus and Arlo's fee before the Trader sees anything, so a halt is a full day for you - it is only a bad one for them. The halt closes the book before anything else because it fires at the trip line - the one moment a reading may be stale and a position may be about to move against you. Your claim is senior and capped, and it is paid either way.