Imagine every S&P 500 stock as a card. The face shows what it returned. The back prints its h-factor — the probability the company disappoints, scored before the returns came in. You'll never know which winners will win. But read the backs, fold the likely losers, then fast-forward and see how it played out.
Fifteen cards from one real date, each h-factor scored before anyone knew what came next. You start blind: fold any five and hope. Then flip the h-factor on, and you'll see which five have the weakest odds. Fast-forward twelve months and compare.
One hand is mostly luck — sometimes folding loses. Play a few; the pattern only shows up over many hands. Which is the whole point ↓
A thin edge per hand compounds. See it three ways: the 21-year record across the whole S&P 500, and your own game split into Playing Blind and Playing with the Odds — each measured against what you'd have made never folding.
The h-factor doesn't call the next blow-up, and it won't win every hand. It does something quieter and more durable: it tilts a portfolio away from the companies most likely to let you down — and small, repeated edges compound.
The h-factor scores how likely a company is to disappoint, 0 to 1. A high score isn't a sell signal on one name — it's a thumb on the scale across hundreds.
The worst-h-factor decile trailed the index by roughly two points a year. You don't need to find the next great stock — just stop holding the likely duds.
Any single hand is close to a coin flip. The edge is real but small — it shows up in consistency (≈61% of quarters) and in what compounds over decades.