Trading Glossary

A volatility indicator that measures the average range between high and low prices over a specified period, accounting for gaps. Higher ATR values indicate greater volatility. Traders use ATR to set dynamic stop-loss levels and determine position sizes proportional to market volatility.

A trend strength indicator that quantifies how strong the current trend is, regardless of direction, on a 0-100 scale. Readings above 25 generally indicate a strong trend, while readings below 20 suggest a range-bound market. It is typically used alongside +DI and -DI lines to determine trend direction.

The excess return of a strategy or portfolio relative to its benchmark index. Positive alpha means the strategy outperformed the benchmark on a risk-adjusted basis. Generating consistent alpha is the ultimate goal of active trading and is what separates skilled traders from those who would be better off holding an index fund.

A volatility indicator consisting of a middle SMA band and two outer bands set at standard deviations above and below the mean. When bands contract, it signals low volatility and a potential breakout. When price touches or breaks the bands, it can indicate overbought or oversold conditions.

A three-part order that simultaneously places an entry order, a stop-loss order, and a take-profit order. When the entry fills, both exit orders become active. When one exit order fills, the other is automatically canceled (One-Cancels-Other). Bracket orders automate complete trade management.

A price movement through an established support or resistance level, usually accompanied by increased volume and volatility. Breakouts signal the start of a new trend or the continuation of an existing one. False breakouts (fakeouts) occur when price briefly pierces a level but quickly reverses.

The process of testing a trading strategy on historical data to evaluate how it would have performed in the past. Backtesting helps validate a strategy before risking real capital by simulating entries, exits, and portfolio metrics. Accurate backtesting requires accounting for slippage, commissions, and survivorship bias.

A versatile oscillator that measures the deviation of price from its statistical mean. Readings above +100 indicate overbought conditions, while readings below -100 suggest oversold territory. Despite its name, CCI is used across all asset classes to identify cyclical turns and extreme price movements.

A period when price moves within a defined range without establishing a clear trend. Consolidation occurs after a strong move as the market digests gains or losses. It typically precedes a breakout and can be identified by decreasing volume and narrowing price ranges.

A condition where multiple independent technical factors align at the same price level or point in time, increasing the probability of a successful trade. Confluence might include a Fibonacci level coinciding with a support zone, EMA, and rising RSI. The more factors that align, the stronger the trade setup.

A risk-adjusted performance metric calculated as the annualized rate of return divided by the maximum drawdown. It measures how much return is generated per unit of drawdown risk. A higher Calmar ratio indicates that returns are being achieved with relatively small drawdowns, suggesting a smoother equity curve.

The peak-to-trough decline in portfolio or account value, expressed as a percentage from the highest point. Drawdown measures the downside risk of a strategy and is a key metric for evaluating trading performance. Understanding drawdown tolerance is essential for maintaining psychological discipline during losing streaks.

A condition where price makes a new high or low that is not confirmed by a corresponding move in an indicator (such as RSI, MACD, or OBV). Bullish divergence occurs when price makes a lower low but the indicator makes a higher low. Bearish divergence occurs when price makes a higher high but the indicator makes a lower high.

A type of moving average that gives greater weight to more recent price data, making it more responsive to new information than a simple moving average. The weighting factor decreases exponentially with each preceding data point. Traders commonly use 12, 26, 50, and 200-period EMAs.

The specific price level or condition at which a trader initiates a new position. A well-defined entry point is based on technical analysis, market structure, or a signal and is a core component of any trade plan. Good entries maximize the risk-reward ratio by placing the stop-loss close to a logical invalidation level.

A technical analysis tool that uses horizontal lines at key Fibonacci ratios (23.6%, 38.2%, 50%, 61.8%, 78.6%) to identify potential support and resistance levels. These levels are derived from the Fibonacci sequence and are widely watched by traders for potential reversal zones after a significant price move.

A strategy used to offset potential losses by taking an opposing position in a related asset. For example, a trader long on a stock might buy put options to limit downside risk. Hedging reduces overall portfolio volatility but typically comes at a cost that reduces maximum potential profit.

A comprehensive indicator that defines support and resistance, identifies trend direction, gauges momentum, and provides trading signals all in one view. It consists of five lines: Tenkan-sen, Kijun-sen, Senkou Span A, Senkou Span B, and Chikou Span, forming a cloud that visualizes future support/resistance areas.

A mathematical formula used to determine the optimal percentage of capital to risk on each trade based on win rate and average win/loss ratio. The formula is f* = (bp - q) / b, where b is the odds, p is the probability of winning, and q is the probability of losing. It maximizes long-term growth rate while minimizing the risk of ruin.

An order to buy or sell a security at a specified price or better. A buy limit order executes at or below the limit price, while a sell limit order executes at or above it. Limit orders give traders price control but do not guarantee execution if the market never reaches the specified price.

A trend-following momentum indicator that shows the relationship between two exponential moving averages of price. The MACD line is the difference between the 12-period and 26-period EMA, while the signal line is a 9-period EMA of the MACD line. Crossovers, divergences, and rapid rises/falls are commonly used as trading signals.

An order to buy or sell a security immediately at the best available current price. Market orders guarantee execution but not price, meaning the fill price may differ from the last quoted price, especially in volatile or illiquid markets. They are the simplest and most common order type.

The largest peak-to-trough decline in a portfolio or strategy over a given time period. It represents the worst-case scenario an investor would have experienced. Max drawdown is critical for evaluating the risk of a strategy and determining if you can psychologically and financially handle its worst periods.

An analysis approach that examines price action across multiple timeframes (e.g., weekly, daily, 4-hour, 1-hour) to identify the dominant trend and optimal entry points. Higher timeframes reveal the big picture while lower timeframes refine entries and exits. Aligning signals across timeframes increases trade probability.

A cumulative volume-based indicator that adds volume on up days and subtracts it on down days. Rising OBV confirms an uptrend as volume flows into the asset, while falling OBV confirms a downtrend. Divergence between OBV and price often precedes a reversal.

A condition where a trading strategy is excessively optimized to historical data, performing perfectly on past data but poorly on new, unseen data. Overfitting occurs when a model captures noise rather than genuine market patterns. It is the most common pitfall in strategy development and the primary reason backtests fail to translate to live performance.

A trend-following indicator that places dots above or below price to signal potential reversals. When dots flip from above to below price, it indicates a bullish reversal; dots moving from below to above suggest a bearish reversal. It also provides trailing stop levels that tighten as the trend progresses.

The process of determining how many units of a security to buy or sell based on account size, risk tolerance, and the distance to the stop-loss. Proper position sizing ensures that no single trade can significantly damage the overall portfolio. It is widely considered the most important aspect of risk management.

The ratio of gross profits to gross losses over a given period. A profit factor greater than 1.0 means the strategy is profitable overall. Values above 1.5 are generally considered good, and above 2.0 are excellent. It is a simple but powerful metric for assessing overall strategy profitability.

The practice of simulating trades without risking real money, using live market data to test strategies as the market moves. Paper trading bridges the gap between backtesting and live trading by letting traders build confidence and refine execution without financial risk. It is essential for validating strategies in current market conditions.

A momentum oscillator that measures the speed and magnitude of recent price changes on a scale of 0 to 100. Readings above 70 typically indicate overbought conditions while readings below 30 suggest oversold conditions. Developed by J. Welles Wilder, it is one of the most widely used technical indicators.

A ratio comparing the potential loss (risk) to the potential gain (reward) of a trade. A ratio of 1:3 means the potential profit is three times the potential loss. Traders typically look for setups with a minimum 1:2 risk-reward ratio to ensure profitability even with a lower win rate.

A price level where selling pressure is strong enough to prevent the price from rising further. Resistance forms when sellers consistently enter at a particular level, creating a ceiling. When resistance breaks, it often becomes support, and the breakout can trigger accelerated buying.

A change in the prevailing price direction from an uptrend to a downtrend or vice versa. Reversals can be identified by chart patterns (head and shoulders, double tops/bottoms), indicator divergences, or exhaustion candles. Distinguishing between a true reversal and a temporary pullback is one of trading's greatest challenges.

A measure of trade profit or loss expressed as a multiple of the initial risk (R). If you risk $100 and make $300, the trade is a 3R winner. If you lose $100, it is a -1R loser. Thinking in R-multiples normalizes returns regardless of position size and simplifies expectancy calculations.

An arithmetic moving average calculated by summing recent closing prices and dividing by the number of periods. Each data point in the window carries equal weight. The SMA smooths out volatility and is commonly used to identify trend direction and potential support/resistance levels.

A momentum indicator comparing a particular closing price to a range of prices over a given period. It generates values between 0 and 100 using %K and %D lines. Readings above 80 suggest overbought conditions, while readings below 20 indicate oversold territory.

An order placed to sell a security when it reaches a certain price, designed to limit an investor's loss on a position. Stop-losses automate risk management by ensuring a position is closed before losses exceed a predetermined threshold. They are essential for disciplined trading and capital preservation.

An order that becomes a market order once price reaches a specified trigger level. Buy stop orders are placed above the current price to catch breakouts, while sell stop orders are placed below to limit losses. Unlike limit orders, stop orders guarantee execution but not the exact fill price.

The difference between the expected price of a trade and the actual price at which the trade is executed. Slippage commonly occurs during periods of high volatility or low liquidity and can be either positive (better price) or negative (worse price). It is a hidden cost that directly affects trading profitability.

The difference between the highest price a buyer is willing to pay (bid) and the lowest price a seller is willing to accept (ask). Tighter spreads indicate higher liquidity and lower trading costs. The spread is an implicit cost of every trade and must be considered in any profitable trading strategy.

A price level where buying pressure is strong enough to prevent the price from declining further. Support forms when buyers consistently step in at a particular level, creating a floor. When support breaks, it often becomes resistance, and the breakdown can accelerate selling pressure.

A measure of risk-adjusted return calculated as the portfolio return minus the risk-free rate, divided by the standard deviation of returns. A higher Sharpe ratio indicates better return per unit of risk. Values above 1 are generally considered acceptable, above 2 very good, and above 3 excellent.

A variation of the Sharpe ratio that only penalizes downside volatility rather than total volatility. It is calculated using the downside deviation instead of standard deviation. The Sortino ratio is more appropriate for evaluating strategies where upside volatility is desirable and should not be penalized.

An order that automatically closes a position when it reaches a specified profit target. Take-profit orders lock in gains and prevent the emotional temptation of holding too long. They are typically used in conjunction with stop-loss orders to define a complete trade plan.

A dynamic stop-loss order that moves with the market price at a fixed distance or percentage. As the price moves in your favor, the stop adjusts upward (for long positions), locking in profits while still protecting against reversals. The stop never moves backward, ensuring a minimum exit level.

The general direction of market price movement over a period of time. An uptrend consists of higher highs and higher lows, a downtrend shows lower highs and lower lows, and a sideways trend (range) shows no clear direction. Identifying the trend is the foundation of most trading strategies.

The average price of a security weighted by volume, giving a benchmark that reflects the true average price traders paid throughout the day. Institutional traders use VWAP to gauge whether they received a good fill. Price above VWAP suggests bullish sentiment, while price below indicates bearish pressure.

A momentum oscillator that measures overbought and oversold levels on a scale of 0 to -100. Readings between 0 and -20 indicate overbought conditions, while readings between -80 and -100 signal oversold territory. It is similar to the Stochastic Oscillator but plotted on a negative scale.

The percentage of trades that are profitable out of the total number of trades taken. While a high win rate is desirable, it must be considered alongside the average win size versus average loss size. A strategy with a 40% win rate can be highly profitable if winning trades are significantly larger than losing ones.