Technical Indicators are the often squiggly lines found above, below and on-top-of the price information on a technical chart. Indicators that use the same scale as prices are typically plotted on top of the price bars and are therefore referred to as "Overlays."

This section describes the various kinds of technical indicators and overlays that are available here at StockCharts.com.

• Introduction to Technical Indicators and Oscillators - An in-depth introduction to the various kind of technical indicators and oscillators out there. A "must read" article for StockCharts.com users.

• Moving Averages - Chart overlays that show the 'average' value over time. Both Simple Moving Averages (SMAs) and Exponential Moving Averages (EMAs) are explained.
• Bollinger Bands - A chart overlay that shows the upper and lower limits of 'normal' price movements based on the Standard Deviation of prices.
• Keltner Channels - A chart overlay that shows upper and lower limits for price movements based on the Average True Range of prices.
• Moving Average Envelopes - A chart overlay consisting of a channel formed from simple moving averages.
• Parabolic SAR - A chart overlay that shows good 'trailing stop' (i.e., sell) points graphically.
• Price Channels - A chart overlay that shows a channel made from the highest high and lowest low for a given period of time.
• Volume by Price - A chart overlay with a horizontal histogram showing the amount of activity at various price levels.
• ZigZag - A chart overlay that shows filtered price movements that are greater than a given percentage.

• Accumulation/Distribution Line - Combines price and volume to show how money may be flowing into or out of a stock.
• Aroon - Shows whether a stock is trending or oscillating.
• Average Directional Index (ADX) - Shows whether a stock is trending or oscillating.
• Average True Range (ATR) - Measures a stock's volatility.
• Bollinger Band Width - Shows the distance between a stock's Bollinger Bands.
• Commodity Channel Index (CCI) - Shows a stock's variation from its 'typical' price.
• Chaikin Money Flow (CMF) - Combines price and volume to show how money may be flowing into or out of a stock. Alternative to Accumulation/Distribution Line.
• Chaikin Oscillator - Combines price and volume to show how money may be flowing into or out of a stock. Based on Accumulation/Distribution Line.
• Force Index - A simple price-and-volume oscillator.
• Moving Average Convergence/Divergence (MACD) - Difference of two EMAs that shows a stock's momentum and direction.
• Money Flow Index (MFI) - Combines a stock's 'typical' price with its volume to show how money may be flowing into or out of the stock.
• On Balance Volume (OBV) - Combines price and volume in a very simple way to show how money may be flowing into or out of a stock.
• Percentage Price Oscillator (PPO) - A percentage-based version of the MACD indicator.
• Percentage Volume Oscillator (PVO) - The PPO indicator applied to volume instead of price.
• Price Relative - Technical indicator that compares the performance of two stocks to each other by dividing their price data.
• Rabbitt Q-Rank - Paul Rabbit's proprietary indicator that rates a stock based on technical and fundamental factors.
• Rate of Change (ROC) and Momentum - Shows the speed at which a stock's price is changing.
• Relative Strength Index (RSI) - Shows how strongly a stock is moving in its current direction.
• Standard Deviation (Volatility) - A statistical measure of a stock's volatility.
• Stochastic Oscillator (Fast, Slow, and Full) - Shows how a stock's price is doing relative to past movements. Fast, Slow and Full Stochastics are explained.
• StochRSI - Combines Stochastics with the RSI indicator. Helps you see RSI changes more clearly.
• TRIX - A triple-smoothed moving average of price movements.
• Ultimate Oscillator - Combines long-term, mid-term and short-term moving averages into one number.
• Williams %R - Uses Stochastics to determine overbought and oversold levels..

• Introduction to Market Indicators - An in-depth introduction to popular market indicators found on StockCharts.com.