Downside gap three methods — three-candle bearish pattern

Downside Gap Three Methods is a three-candle construction used for a bearish-continuation hypothesis. Two bearish candles are separated by a defined gap; a bullish third opens inside the second body and closes inside the first. Specify whether the gap concerns bodies or whole ranges before comparing detectors. Recognition does not establish that prices will continue falling.

What the Downside Gap Three Methods is

CandleScanner’s definition requires a preceding decline and a full-range gap: H2 < L1. For two bearish candles, its third-candle body relationships are C2 < O3 < O2 and C1 < C3 < O1. O, H, L and C mean open, high, low and close. Our tests use strict boundaries; a close exactly at a body edge does not pass. Evaluate the completed third close only when it is known.

The bullish third candle closes the gap between the prior bearish bodies in this pattern's definition. That price action can motivate a continuation hypothesis, but candle colours do not reveal whether buying came from short covering or new long positions. Compare it with the Upside Gap Three Methods structure.

Structure and the mechanics of the gap

The three candles form a continuation hypothesis. The gap and body relationships must be defined before looking at what happened afterward.

Low opening O2 < L1 does not prove H2 < L1: the second candle may later trade higher. For two bearish bodies, a body gap instead requires O2 < C1. TA-Lib C 0.6.4 CDLXSIDEGAP3METHODS checks body gaps, colours and strict O3/C3 positions, but neither preceding trend nor average body length. Its −100 is a recognition code, not 100% probability. Thinkorswim additionally documents long-body and trend parameters. Different definitions can produce different labels on the same OHLC.

The third bullish body can cover the earlier gap without establishing who bought or why. A higher Close beyond the first body can actually remove TA-Lib’s label rather than make it stronger. Keep the completed body, full range, trend filter and any later confirmation as separate fields. The trading price gaps guide explains related measurements.

O3 is strictly between 17,620 and 17,700; C3 is strictly between 17,800 and 18,000. Candle 2 opening is 80 points below L1, but that is not the 30-point gap between whole ranges. Raising only H2 to 17,790 removes that range gap while leaving the body gap. Full OHLC still does not document every intermediate price or the complete intrabar sequence.

How to recognise and trade the formation step by step

Step 1 — confirm the downtrend

Define any preceding-trend filter before testing. CandleScanner and thinkorswim describe downtrend context, while this TA-Lib function does not check it. Do not silently equate the scanner outputs or infer that a classified continuation has already been proven by later prices.

Step 2 — verify the gap and the reach of the white candle

In a separate hypothetical boundary exercise use candles O/H/L/C = 100/102/90/92 and 88/89/80/82, then hold O3=84, H3=101, L3=81 fixed. Vary C3: 92,96,100,101. With three prior identical 110/112/108/111 bars, the pinned TA-Lib branch gives 0,−100,0,0 respectively. Strict 92<C3<100 matters: a deeper final close at 100 no longer qualifies. High 101 is unchanged even when Close 96 is inside the body. Raising only H2 from 89 to 91 removes the whole-range gap but leaves the body-gap code −100. These are independently calculated branch examples, not native library execution or market outcomes.

Step 3 — wait for confirmation, then enter

CandleScanner describes a later move below C2 as confirmation. Selling below L3 is a different possible entry rule. A close filter, intrabar stop order and later retest require different availability and execution assumptions. Do not assign the same fill to them or treat an OHLC shape as evidence that “sellers have returned”.

Entry, stop and targets — a hypothetical example

For an independent hypothetical execution model, define three contracts worth PLN 2 per point each, for total PLN 6 per point, on a PLN account. Assume an actual short fill at Bid 81 and complete buyback at Ask 98 or Ask 65, with PLN 6 additional total fees. These fill prices and contract values are fictional; neither an index chart nor the candle pattern defines them.

Spread is already in the supplied Bid/Ask fills and is not deducted again. Financing, conversion and other fees are omitted. An ordinary stop may execute worse. Planned net reward:loss is 90/108≈0.8333, not 2:1, and is not a probability of success.

The original index-like model can illustrate a separate range projection: 18,000−17,600= 400 points. From a hypothetical entry reference 17,640, that rule gives 17,240. A chosen exit reference 17,850 is 210 points away, so raw 400/210≈1.9048 before quote-side execution, contract value and fees. Those are chosen rules, not default targets or invalidation levels of the pattern. A return beyond a body edge changes classification; it does not prove the next trend or guarantee a fill.

The most common mistakes when trading this pattern

1. Applying a trend or long-body filter without recording its definition, or assuming the TA-Lib branch checks it automatically.
2. Confusing the figure with the Downside Tasuki Gap, where the white candle enters the gap but does not close it, and with the Falling Three Methods, which has no gap at all.
3. Treating a deeper gap fill as a stronger detector value when strict C3 body boundaries can remove the code.
4. Assigning an entry before the completed third close or later condition was available.
5. Using a chart gap or geometric stop as a guaranteed loss cap, or calculating profit without contract value, quote sides and costs.

Why this is a niche pattern on the currency market

Specify instrument, venue or provider, price component, time zone and session boundaries. A gap in one stream does not prove that no venue traded those prices. Cash-index values, futures and CFDs may use different sessions and contract terms; missing records may also create a false gap. OANDA UK documents closures and possible reopening gaps, rather than universal uninterrupted five-day pricing.

No comparative Forex-versus-stock occurrence rate is established here. The site’s existing classification sample contains 120 completed Kraken EUR/USD H1 bars from 21–25 September 2026; its saved CDLXSIDEGAP3METHODS codes are all 0. Our review independently recalculated the specified pinned branch against those same saved bars and CSV, without native TA-Lib execution. That one venue and interval do not prove absence on currencies or months between signals, and no trades or profitability were tested. Compare structures such as bullish and bearish engulfing and three black crows by their defined conditions, not an invented frequency ranking.

Who this pattern is for

A fixed rule makes body comparisons reproducible even if different definitions classify different candidates. Keep source version, raw OHLC and timestamp continuity with each output. The diagram deliberately lacks one H1 record; that justifies “insufficient data” under its continuous-session assumption, not inventing a candle or declaring no pattern. The technical analysis material supplies context; the label alone does not establish a profitable standalone system.

What to do tomorrow to get comfortable with this pattern

1. Choose a specified instrument, provider, price basis, interval and session calendar. Check timestamp continuity before looking for a gap.
2. Store full OHLC and distinguish body-gap from range-gap conditions, strict body boundaries, trend and average-length filters.
3. Treat later C2 confirmation, below-L3 entry and retest as separate rules. Calculate assumed or actual fills, size, contract multiplier and all costs.
4. Retain failed and rejected candidates and assess frozen rules on later data. An alert or a dozen demo trades does not establish a success rate or live readiness.