Guide
Interpreting probabilistic market forecasts
Every number we publish is a probability, not a prediction. Here's how to read them.
A traditional trading signal tells you what will happen: buy this, sell that, price target $X. A probabilistic forecast tells you something more honest — the estimated chance a thing happens, paired with a confidence score describing how sure the model is about that chance.
Probability
What it meansIf The Day Before says SPY has a 62% chance of opening green tomorrow, that number is a frequency statement. Over a large sample of similar setups, we'd expect the market to open green about 62 of every 100 times. It is not a promise about tomorrow specifically.
The correct question is never "is 62% right or wrong?" — the correct question is whether 62-percent claims come in at the 62-percent rate over time. That's what the performance page tracks.
Confidence
Uncertainty about the estimateConfidence measures how much the model trusts its own probability. A 62% probability with high confidence means the model has seen the pattern often and its estimate is stable. The same 62% with low confidence means the signal is noisy — treat it as closer to a coin flip than the number suggests.
Low confidence isn't a failure. It's the model refusing to fake certainty when it doesn't have any. Prefer high-confidence, high-probability forecasts and be skeptical of low-confidence extremes.
Not a signal
Why this is differentA signal service tells you what to do. A probability distribution tells you what's likely, and hands the decision back to you. Position sizing, risk tolerance, holding period, and what already sits in your portfolio all belong to you — not the forecast.
The Trades to Consider section translates the model's highest-conviction ideas into concrete plans — buy price, take-profit, cut-losses — but every one is still probabilistic. A trade with a "70% chance this works" fails three times in ten by construction, and that is the correct outcome, not a broken forecast.
How to use the site
Practically- Read the day's headline forecast — the direction, the probability, and the confidence together.
- Check Opening Bell to see how the model expects individual assets to move.
- Skim the drivers and calendar so you understand why the model believes what it does.
- Weight what you do by confidence, not probability alone.
- Compare against the calibration record before trusting any single day's numbers.
Nothing on this site is investment advice. It is a probabilistic view of tomorrow's session, published for education and public accountability.