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A 4-hour EUR/USD candle closes with a long lower wick and a small body pushed up near the top. On its own it looks like a buy signal. Then you notice it formed exactly at 1.0850, the same level that rejected price twice last week, and the setup starts to make sense.
That gap between a shape and a shape in context is where traders either make progress or bleed money with forex candlestick patterns. Memorising the names takes an afternoon. Understanding what each candle says about the fight between buyers and sellers takes longer, and knowing when to ignore them takes longer still.
Each candle packs four prices into one shape: the open, the high, the low and the close. The thick part (the body) spans open to close. The thin lines (wicks, or shadows) mark the extremes reached during the period.
A candle that opens at 1.2700, runs up to 1.2760, falls to 1.2685 and closes at 1.2745 is telling you something specific. Buyers pushed price 75 pips above the open but couldn't hold it there, and sellers dragged it 15 pips below before the close. The body is green, but the upper wick says the rally got sold.
A body covering 60 pips on the daily chart means real conviction. The same shape covering 6 pips on a 5-minute chart is noise. Before you name a pattern, look at how it compares with the 20 candles beside it.
You could learn 50 named formations and still trade badly. Most of the useful information lives in a small handful of them:
A hammer printed at the bottom of a 300-pip decline on USD/JPY carries weight because it shows sellers pushed lower and got slapped back. The same hammer appearing halfway up a quiet range carries almost none.
The doji is the most overhyped of the group. Traders circle every one they see and treat it as a reversal. In practice, a doji in the middle of a tight Asian session range on a 15-minute chart is usually just the market waiting for London to open.
Engulfing candles work best when the second candle closes beyond the first candle's extreme, not just beyond its body. A bullish engulfing that closes above the previous high has done more than one that closes a pip above the previous open.
The inside bar is underrated. If Monday's range on GBP/USD is 90 pips and Tuesday's is 35 pips inside it, the market is coiling. Where that coil breaks often sets the tone for the next two or three days.
Morning and evening stars are essentially three-act stories: momentum, hesitation, reversal. If the third candle doesn't close past the midpoint of the first, treat it as a failed pattern.
Strip away support, resistance and trend direction and a candlestick pattern becomes a Rorschach test. A shooting star into a clean resistance level after five green daily candles is a very different proposition from the same shape drifting in the middle of nowhere.
This is the core of reading a chart using price action alone: the candle is the evidence, but the location is the argument. Pair that with a clear view of direction, as covered in trend trading and riding a move rather than fighting it, and the same pattern suddenly has a filter. Bullish engulfing in an uptrend after a pullback: worth a look. Bullish engulfing against a hard downtrend: probably a trap.
A pin bar on the weekly chart can stay relevant for a month. A pin bar on the 1-minute chart is stale within 20 minutes.
If you're holding positions for days, swing trading multi-day moves suits daily and 4-hour candles, where patterns carry more weight and fewer false signals. Intraday, the reality of day trading at the London open means candle patterns form fast and need confirmation, not patience. And with very short holding periods, as scalping makes clear about spread costs, a 3-pip wick is often just the spread wearing a costume.
A rough rule: the smaller the timeframe, the more you need the pattern to line up with a level and a session, because random noise generates plenty of pretty shapes.
Patterns break down in predictable conditions, and knowing them saves money.
Thin liquidity is the big one. During the Asian session, USD/CAD can print a textbook engulfing candle on 4,000 lots of volume that vanishes the moment Europe wakes up. News releases do the same thing faster. A hammer printed 30 seconds before US non-farm payrolls is not a signal; it's a placeholder until the number lands.
Ranging markets are another graveyard. In a tight 40-pip range, every doji and pin bar looks meaningful and none of them are, because there's no trend to reverse and no room to profit before the opposite edge of the range.
And there's the scanner problem. Software that flags 30 patterns across 28 pairs every hour trains you to see signals everywhere. You end up taking the 27th-best setup because it appeared on a list.
Pick three patterns and define them precisely enough that a stranger could apply them. Vague definitions produce vague results.
For example: a bullish pin bar on the 4-hour chart, wick at least twice the body, forming within 10 pips of a level that has held twice in the past month, entered at the close of the candle with a stop 5 pips beyond the wick and a target at the previous swing high. That's testable. "Trade the hammer" is not.
Then log 50 of them. Record the pair, the session, whether a level was involved, and the outcome in R multiples. You'll likely find that a few combinations account for most of the profit and the rest are break-even at best. Most traders discover their best results come from one pattern, in one market, at one time of day. That's not a limitation. It's an edge, and it only shows up once you stop treating candlestick patterns as standalone buy and sell buttons and start treating them as evidence to be weighed.
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