# AI-Powered Stock Predictor

An end-to-end machine learning application that predicts tomorrow's share price direction based on a user-defined historical period.

Unlike static models, this app trains a new Random Forest model for any ticker symbol (e.g. `BTC-USD`, `TSLA`), making it fully dynamic and adaptable.

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## Features

### Automated Update Logic
Models are automatically retrained if the saved weights are older than 7 days, ensuring the AI stays synchronized with the most recent market data.

### Advanced Feature Engineering
Automatically computes technical indicators including:
- **Relative Strength Index (RSI)**
- **Bollinger Bands** (Upper / Lower)
- **Volatility** (Rolling standard deviation)
- **Price Momentum & Lagged Returns**

### Confidence Thresholding
Implements a probability filter — a "buy" signal is only triggered when the model's confidence exceeds **60% probability** — to reduce noise and false positives.

### Performance Optimized
Integrated with **Streamlit Cache** (TTL: 1 hour) to minimize redundant API calls to Yahoo Finance.

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## Usage

1. Enter a stock or crypto symbol in the sidebar (e.g. `AAPL`, `BTC-USD`)
2. Select the historical period for training data
3. The model will train automatically (or click **Force Train** to retrain manually)
4. View the prediction and price chart