Who Watches The Book When You Are Away

A trading book doesn't stop needing attention just because its usual trader is sick, on vacation, or stuck in a meeting — markets keep moving, positions keep accruing risk, and something can go wrong at any moment. If nobody is designated and actually briefed to watch a book during an absence, a real move can sit unmonitored for hours, turning a manageable adverse move into a much larger loss simply because nobody was watching, or noticed too late.

Good desk practice makes cover explicit rather than assumed: before stepping away, the primary trader hands off a short brief covering current positions, live risk limits, any pending orders or hedges in progress, and — critically — what the cover person should actually do if something specific happens (a level breaks, a name has news, a hedge needs adjusting). A cover person without this context can see a position on the screen but not know whether it's intentional risk or a mistake waiting to be caught, which is the entire point of having a human, rather than just an automated limit check, watching the book.

The failure mode this guards against is not exotic — it's the ordinary case of an absence nobody planned handoff for, where a stop-loss level is breached, a corporate action needs a manual adjustment, or a system alert fires, and the response is delayed simply because the one person who'd normally react wasn't there and nobody else knew they were supposed to be.