What is the asset registry?

Your instrument list. Each row holds tick size, tick value, an optional commission and the exchange. The first two drive P&L, R:R and position calculations.

Everything downstream of a trade's prices is computed from these. Get them right once per instrument and every number the app shows you for that instrument is right; get them wrong and the errors are invisible, because a wrong tick size produces plausible figures rather than obvious nonsense.

The table is directly editable and your edits are not saved until you press Save changes at the foot of it. Commission is optional and per-instrument; filling it in is what makes your net figures net.

Rows arrive on their own, and that is not the same as being ready. Every path that creates a trade — a CSV import, a broker or platform sync, a trade typed in by hand — checks whether the symbol is already here and adds it if not. So the list fills itself in as you trade. What it cannot fill in is the tick economics for anything it does not already ship values for, and those are the two columns every dollar figure is computed from.

Which is why this is a page to visit before you trade, not after. Set the tick size and tick value for what you trade while you are not in a position, and every figure for that instrument is right from the first trade onwards. Leave it, and the trades still import — they simply arrive without a P&L, and you end up filling the columns in later and wondering why last week reads differently than it did.