What is the chance of a gain in a stock forecast?

The chance of a gain is the share of the quantum model's simulated price paths that finish above today's price at the forecast horizon — a probability, never a promise, and not the same thing as expected growth.

How the chance of a gain is computed

It is the fraction of Feynman path-integral simulated trajectories that finish above the current price at the chosen horizon — out of every simulated path the quantum model runs, it is simply the share that ended up. A reading of 70% means 7 in 10 simulated paths finished higher; it does not describe how much higher, only how many of the paths crossed today's price at all.

Probability of direction vs. size of the move

The chance of a gain and expected growth answer different questions: the first is the share of paths that finish up, while expected growth is the probability-weighted mean return across ALL paths. A distribution can have a high chance of a gain with a small expected growth (many paths finish barely above today's price) or a moderate chance of a gain with a large expected growth (fewer paths finish up, but those that do move a long way) — reading either number alone misses the shape of the distribution. Quantustik always shows the chance of a gain next to expected growth and the CI90 band so a visitor sees direction, magnitude, and uncertainty together, not one number in isolation.

Live example: AAPL's current 3-month growth probability (P↑) is 82% — the share of simulated price paths finishing above today's price at that horizon. See the full AAPL forecast for the accompanying expected growth and CI90 band.

Why the chance of a gain alone is never a BUY signal

A risk-first BUY only fires when multiple independent signals converge and reward-to-risk clears a 2:1 bar — it is one input among several (alongside model confidence, backtest accuracy for that ticker, and market conditions), never a standalone trigger. Combine it with the CI90 backtest accuracy for that specific ticker before trusting how well-calibrated the probability estimate actually is.

Frequently asked questions

Does 100% growth probability mean the price is guaranteed to rise?

No. It means every simulated path in the model finished above today's price at that horizon — the tails of the simulated distribution happened to stay positive, not that the outcome is certain. Real markets can still produce outcomes outside the simulated range.

What is the difference between growth probability and expected growth?

The chance of a gain is the share of simulated paths that finish above today's price; expected growth is the mean return across all paths. A stock can have a high chance of a gain with a small expected growth, or the reverse — the two describe different parts of the same distribution.

Is a high growth probability a buy signal by itself?

No. Quantustik combines the chance of a gain with model confidence, backtest accuracy, risk/reward, and market conditions — a risk-first BUY only fires when several independent signals converge, never on that figure alone.

See it on a ticker

AAPL analysis shows this metric in context, or browse all S&P 500 tickers.

Related terms

Educational research only — not investment advice.