IN PLAIN ENGLISH
A line for the things that have no price history — a watch, a vehicle, a bond, a gold coin — joining the points you gave us: what you paid on the day you bought it, what it's worth now, and what it fetched when you sold it.
FULL DEFINITION
What your precious metals and hand-entered assets were worth over time, drawn from the buy date and price, today's value and — once sold — the sale date and price you entered.
EXAMPLE
A watch bought on 1 March 2023 for £5,000 and valued at £6,200 on 1 September 2026 is drawn from £5,000 in March 2023 in a straight line to £6,200 in September 2026, and level after that.
HOW IT'S CALCULATED
Each asset needs a buy date and a price paid in your portfolio currency. It counts from its buy date until the day before its sale date. Its line runs straight from the price paid on the buy date to its value now — the live price for a metal, or the amount you last typed in, on the day you typed it, carried level to today — or, once sold, to what it fetched on the day before the sale date, after which it leaves the line. The line is the total of every asset held that day; the dashed Paid line is what those assets cost. Change = Σ over each asset of (its value on its last day in the range − its value on its first), so buying or selling is never counted as a gain or a loss. Because nothing records the days in between, the lines between your points are straight, not the asset's real path. An asset with no buy date, no price paid, a sale with no price, or a metal not priced yet is left out and named under the chart, never drawn as 0.
Educational content only. It is not personal financial advice.