No candlestick pattern is reliable on its own. Patterns that tend to work better are the larger, multi-candle ones, such as engulfing, morning star and evening star, when they appear at clear support or resistance with strong volume.
Reliability comes more from context than shape. A bullish engulfing on a daily chart, after a two-week decline, at a level where the stock bounced twice before, with volume 50% above average, is a far better setup than the same shape on a 3-minute chart in the middle of nowhere.
- Timeframe: daily and weekly patterns are less noisy than intraday ones.
- Location: at support, resistance or a trendline.
- Volume: higher volume on the signal candle adds weight.
- Confirmation: the next candle moving in the expected direction.
- Trend: reversal patterns need a clear prior trend to reverse.
The trap many students fall into is reading a pattern-success percentage online and trusting it. Those figures come from different markets, periods and definitions. The honest approach is to test a pattern yourself on 50 to 100 past charts of the stocks or index you trade, and note how often it worked with your exit rules.
Our post on three-candle confirmation patterns goes deeper, and our Technical Analysis course teaches you to backtest and judge patterns with your own data.