UNSTRUCTURED ALPHAMeasure a portfolio

How to read these pages

A plain-English guide to every figure on Unstructured Alpha: what a stock's typical weekly move with oil or interest rates means, what the 90% range tells you, and when a reading counts as Clear.

The typical weekly move

Each reading answers one question: in a week when this force moved by a set amount, how did the stock typically move? It is measured over the last 3 years of weekly returns. The set amounts are deliberately ordinary weeks, not crises:

So "+2.4% with oil" means: in weeks when oil rose 10%, the stock typically rose about 2.4% more than it otherwise would have. A negative figure means it typically fell. Moves scale roughly in a straight line, so half the oil move means about half the stock move.

Beyond the market

Most stocks rise and fall with the market as a whole, and the market itself reacts to oil, rates and the rest. Each reading is measured after removing the stock market's own move, and the five core forces are measured together, so each shows what that one force adds on its own. A stock can rise in a week when oil rose because everything rose; that part is not counted as oil.

The 90% range

Three years of weekly data pin a reading down only so far. The 90% range is the band the true figure very likely sits in, given how noisy the weeks were. A narrow range is a precise reading; a wide one, a rough one.

−4%0+4%
Illustration, not a real stock: a typical move of +2.4% in weeks when oil rose 10%, with a 90% range of +1.4% to +3.4%. The whole range sits above zero.

The single most useful thing to check is whether the range crosses zero. If it does, the data cannot rule out that the stock has no link to that force at all.

Clear, Tentative, or not

Every reading carries one of three labels, from how far the figure sits from zero relative to its own noise:

A stock with fewer than 2 years of weekly prices gets no label at all: too little data to say anything. Pages rank and count only Clear and Tentative readings; the rest are shown grey, never dropped and never ranked.

Beyond the core five

The other forces (short-term rates, gold, bitcoin, the yen and more; 19 in all) are each measured with the stock market and the core five held fixed, so they show only what those do not already explain. Because so many are tested, their bar for Clear is stricter (|t| ≥ 3.01).

What this cannot tell you

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