Gold was $4,000 an ounce on 3 November last year and $3,913 at yesterday's close, down 2% across the twelve months. It peaked at $5,318 on 29 January, and it's down 26% since.

Silver drew almost the same line. It also peaked in the last week of January and spent the rest of the year sliding back, though its moves were far bigger: it more than doubled to $115, then lost more than half of that. With the scale stripped off, the size of a move disappears and only the shape is left.

Bitcoin was the easier one to rule out. It started the window at its high, about $110,650, and closed yesterday 31% lower, so its line runs downhill from the first day.

Another one next Wednesday.