Quick Answer
Stock Expert AI's prediction engine uses an ensemble of 5 statistical models plus Meta's Prophet to generate price forecasts with confidence intervals for any US stock. Each prediction includes a 90-day price target, directional probability, and historical accuracy tracking — all powered by real-time data from FMP, Yahoo Finance, and Alpha Vantage.
Frequently Asked Questions
How does the AI prediction engine generate stock forecasts?
The prediction engine uses an ensemble of 6 statistical models: ARIMA (time-series trends), ETS (exponential smoothing), GARCH (volatility modeling), Linear Regression (trend extrapolation), Random Forest (non-linear patterns), and Meta's Prophet (seasonality + holidays). Each model generates an independent forecast, and outputs are weighted by recent accuracy to produce a consensus price target with confidence intervals.
How accurate are the AI stock predictions?
Every prediction is timestamped and tracked against actual market outcomes. Accuracy varies by stock volatility, market conditions, and forecast horizon. We display historical accuracy metrics for each model so you can evaluate performance transparently. Predictions are educational tools and should not be treated as investment advice.
What models are used in the ensemble?
The ensemble includes 6 models: ARIMA for autoregressive time-series analysis, ETS for exponential smoothing and trend decomposition, GARCH for volatility clustering, Linear Regression for linear trend projection, Random Forest for capturing non-linear relationships, and Meta's Prophet for robust seasonality and holiday effects. Each model contributes independently to the final weighted forecast.
How often are predictions updated?
AI predictions are refreshed daily using the latest market data. New price data, earnings reports, and technical indicators are incorporated into the models each trading day. Community predictions can be submitted at any time and are scored once their target date is reached.
Is the predictions feature free to use?
Yes, the predictions feature is 100% free during beta. You can view AI forecasts, make your own predictions, track accuracy, and compete on the leaderboard without any cost. Create a free account to save your prediction history and earn XP rewards.
Are these predictions investment advice?
No. All predictions are generated by statistical models for educational and entertainment purposes only. They are not investment advice. AI models cannot predict unexpected events, earnings surprises, or market crashes. Always consult a licensed financial advisor before making investment decisions.