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Is there a candlestick pattern that guarantees any kind of future profit?
I did a historical analysis a few years back of all well-known candlestick patterns against my database of 5 years worth of 1-minute resolution data of all FTSE100 shares.  There wasn't a single pattern that showed even a 1% gain with 60% reliability.  Unfortunately I don't have spread data other than for a handful of days where I recorded live prices rather than minutely summaries, but my suspicion is that most of the time you wouldn't even earn back the spread on such a trade.