The Patterns Worth Backtesting
Chart and candlestick patterns traders actually watch for — see what each one shows, then test it against real price history.
What this library is for
A pattern name isn't a trade signal — it's a description of a shape that has shown up on charts before and might mean something when it shows up again. Each entry here explains what the shape is, what traders read into it, and how to check whether that reading holds up before it goes near a live account.
Entries are written for self-directed traders — from someone learning to spot a double top for the first time to someone auditing a pattern-based rule they've traded for a year. No prior system is assumed.
The order matters: read the entry, then test the pattern on past price. A head and shoulders that looks obvious on a chart you've already seen the outcome of is not evidence. Backtesting is where a pattern earns a place in a plan, or loses one.
Frequently asked
Do chart patterns actually work?
Some traders find edge in specific patterns on specific markets and timeframes; others find none at all. A pattern is a description of a shape, not a guarantee of what happens next — the only way to know if one holds up for you is to define it precisely and test it on your own instrument and timeframe.
What's the difference between a chart pattern and a candlestick pattern?
A chart pattern — head and shoulders, a triangle, a flag — forms over many candles and describes the shape of a price move. A candlestick pattern — a doji, an engulfing candle — forms in one to three candles and describes a single session's balance of buyers and sellers. Both are rules you can state precisely, so both can be backtested the same way.
How do I know if a pattern is confirmed?
Most patterns aren't complete until price actually breaks the level the pattern is built around — a neckline, a trendline, a flat resistance line. Spotting the shape early is the easy part; waiting for the close that confirms it is where most of the false signals get filtered out.
Do patterns work the same way on every market and timeframe?
No. A pattern's reliability depends on the volatility and session structure of the instrument it forms on. A flag that plays out cleanly on a trending futures contract can behave completely differently on a range-bound pair. Test the pattern on the exact market and timeframe you intend to trade.
How do I test whether a pattern actually works?
Write down the exact rule for spotting and confirming the pattern, then run it over past price and record every occurrence — including the ones that failed. Traders Journal's backtesting lets you step through history bar by bar, so you get a real sample instead of a memory of the setups that worked.
Will more patterns be added to this library?
Yes. Entries are added as they're written and reviewed, not promised ahead of time.
Test a pattern before you trade it
Spotting a pattern on a chart you've already seen the outcome of proves nothing. Traders Journal steps through price history bar by bar, so you can mark every time the pattern actually formed and record what happened next — including the times it failed.
Explore backtesting