Whose fingerprint?

Five rounds a day: see how a mystery U.S. stock has moved with interest rates, inflation, the dollar, oil and credit, and pick it out of four.

Each row is the stock's typical weekly move in weeks when that force moved by its standard amount, beyond the stock market's own move, with its 90% range. Coloured dots held up; hollow ones could not be told apart from zero. Every mystery stock has at least two readings that held up, and the other choices have clearly different profiles. Everyone gets the same five rounds today.

This describes the past, and it is not a forecast. Nothing here is a recommendation to buy, sell or hold any security.