Short answer: the abcd pattern is a four-point price structure built from three legs. Leg AB is an impulse, leg BC is a partial pullback, and leg CD repeats the direction of AB at a measured length. The pattern completes at point D, which is where a trader looks for the move to reverse. Its usefulness comes entirely from measurement: BC should retrace a set share of AB, and CD should equal AB or extend BC by a fixed ratio. Strip the ratios away and you are left with an ordinary zigzag.
What the four points mean
Point A starts the first leg. Price travels to B, gives some back to C, then runs to D. In a bullish abcd, A is a high, B is a low, C is a lower high, and D is a low beneath B. In a bearish abcd the order flips: A is a low, B is a high, C is a higher low, and D is a high above B. In both versions the trade is taken at D, against the CD leg. So a bullish pattern finishes with a falling leg and produces a buy, which feels awkward at first.
Point C must never trade beyond A. If it does, the structure is something else. A tidy way to remember it: two legs down and one up gives a buy, two legs up and one down gives a sell.
Measuring each leg
The readings below separate a genuine abcd from any lumpy three-swing move in your chart analysis. A fibonacci retracement drawn over AB gives the BC reading, and the same tool in extension mode gives CD. No other technical analysis tools are needed, and most trading platforms ship both.
| Leg | What you measure | Acceptable reading | What a miss tells you |
|---|---|---|---|
| AB | The impulse, wick to wick | Any length, it sets the yardstick | Nothing yet, this leg is the ruler |
| BC | Pullback as a share of AB | 61.8% to 78.6% | Under 50%: too shallow. Beyond A: invalid |
| CD | Length against AB and BC | Equal to AB, or 127.2% to 161.8% of BC | Stops short: no pattern. Runs far past: momentum, stand aside |
| Time | Bars in CD versus bars in AB | Roughly equal | A CD leg done in a third of the time is mostly a breakout |
Two readings carry the most weight. A shallow BC leg means one side scarcely gave ground, and the CD leg that follows tends to run violently instead of stalling. On CD, the classic form equals AB in price and the stretched form reaches 127.2 or 161.8 percent of BC. Both count. When price blows through the 161.8 reading, the pattern is dead, and stubbornly waiting for a turn is how small losses become large ones.
A worked example on a 10,000 account
Suppose EUR/USD climbs from 1.0800 at A to 1.0900 at B, a 100-pip AB leg. It slips back to 1.0830 at C, which is 70 pips, or roughly 70 percent of AB. That sits inside the 61.8 to 78.6 window, so BC passes. Because A is a low and B a high, this is a bearish abcd and the trade at D is a sell.
Now project D. Adding 100 pips to C gives 1.0930 for the equal-leg version. Taking 127.2 percent of the 70-pip BC leg gives 89 pips, or 1.0919. Taking 161.8 percent gives 113 pips, or 1.0943. So the completion zone runs from 1.0919 to 1.0943, about 24 pips wide.
A trader on a 10,000 account risking 1 percent has 100 to lose. A stop 50 pips above the entry, well clear of the zone, means 2 per pip, or 0.2 standard lots. The first target is C at 1.0830, roughly 100 pips away for a 2 to 1 reward. The spread and commission cost on that size is unremarkable at a 50-pip stop. Halve the stop and the same charge eats twice the share of each trade.
A checklist for entering at point D
- Direction: decide which way the trade goes before drawing anything. A bullish pattern ends on a low, a bearish one on a high.
- Ratios: BC between 61.8 and 78.6 percent of AB, and CD equal to AB or 127.2 to 161.8 percent of BC. Both inside the window or no trade.
- Structure: D should land on a support and resistance level that existed before the pattern started forming.
- Confirmation: wait for a rejection candle or a close back inside the zone. A limit order at the exact ratio gets filled first and hurt first.
- Stop: beyond the 161.8 reading with wick clearance, never sitting on it.
- Targets: C first, then A. Take partial profit at C so a stall there does not squander the whole idea.
- Size: from the stop distance, never from how convincing the shape looks.
Market conditions decide how forgiving this list is. In a sluggish, rotating market the D zone tends to hold and price turns quietly. In a disorderly market driven by a news release, the CD leg overshoots and the zone gets swept. The setup is precarious no matter how clean the ratios were. When D lands on a level that just broke, a break and retest strategy and the abcd point at the same price. That is the strongest version of the trade.
Common mistakes and why they are consequential
- Drawing the pattern after the fact. If you have to hunt for a C that makes the ratios work, the pattern is not there. Ambiguity about which swing is B is a warning, not a detail.
- Mixing wicks and closes. Measuring AB from a wick and BC from a close moves every reading. Pick one rule and use it every time.
- Ignoring time. A CD leg that finishes in three bars when AB took twelve is a brittle base for a reversal.
- Entering at 127.2 and adding at 161.8. That turns one tidy position into a lopsided one with no defined stop.
- Trading into scheduled news. The release replaces the conditions the four points were built under. Hesitancy is the correct response.
- Chasing D after the turn. If price has already bounced 40 pips, the reward is gone and the stop is now clumsy. Let it go.
Trading the pattern inside evaluation limits
Prop-firm evaluations put a daily loss cap and a total drawdown around every trade. The abcd pattern suits that better than most trading strategies because the stop is defined before entry. The risk is the width of the D zone. A 24-pip window is fine on a daily limit that allows three or four such losses. It is unforgiving if one miss uses the whole day.
Pivex applies a static total drawdown that does not trail your gains, and a daily loss limit that resets each day. There is no deadline and no required number of trading days. That removes the pressure to find a pattern where none exists, the usual reason a trader forces point C. The built-in assistant tracks the limits, so the remaining job is honest measurement.
A long, free daily history such as the FRED daily S&P 500 series is enough to measure a few dozen ABCD legs by hand before you trust the ratios on a live chart.
Next step: pick one pair or index CFD, scroll back three months on the one-hour chart, and mark every three-leg move you find. Measure BC and CD on each and note how many met the ratios. Most traders discover that only a handful qualify, and that discipline is what a Pivex evaluation rewards. Results vary, but traders who measure first seldom blow a daily limit on a shape that was never a pattern.
Related guides: fibonacci retracement and support and resistance trading.
Before participating, review Pivex's current program rules and decide whether a simulated proprietary trading evaluation fits your experience and risk limits. Participation does not guarantee a reward, income, or any particular trading result.