What Is a Descending Triangle?
Sellers press rallies at progressively lower peaks while buyers defend a flat support shelf—often a prior low, psychological level, or demand zone. Each rally fails sooner, showing supply dominance. The pattern completes when support breaks on volume. Descending triangles appear in downtrends as continuation and at bottoms that ultimately fail. The flat support line is the battleground; repeated tests weaken it. Unlike symmetrical triangles, bias is bearish when structure is clean and trend context agrees.
Long bases with many support touches can still break violently when macro sentiment shifts—count tests but respect the break.
How Do You Validate the Formation?
Minimum two touches on support and two lower highs on descending resistance. Support should be horizontal within reasonable tolerance—slight angle is acceptable if visually flat. Lower highs must be obvious, not micro-differences. Volume often rises slightly on downswings within the pattern. Pattern height measures from highest lower high to support for target math. Distinguish from falling wedges—wedge lower line slopes down; descending triangle support stays flat.
Triangles forming under a falling daily moving average align with trend; counter-trend ones need stricter confirmation.
What Confirms the Bearish Breakdown?
Close below support on volume exceeding recent averages. Increased selling on the break day versus prior support tests is constructive. Retest of support from below that fails offers entry with defined risk above the line. Breakdown during weak market breadth improves follow-through. Intraday pierces that recover before close are not valid shorts for swing traders. Some traders short the rejection at descending resistance before support breaks with stop above trendline—higher skill, lower win rate.
Watch for selling climax into support—capitulation volume sometimes precedes false breakdown and sharp reversal.
How Do You Set Stops and Targets?
Stop above the last lower high or above descending resistance line. Measured-move target subtracts pattern height from breakdown point. Take partial into extension; cover remainder into panic if short. If breakdown lands on next major support, reduce target expectations. Gap down through support may achieve much of measured move immediately—scale out rather than insist on full projection.
Short borrow and squeeze risk on low-float names can override perfect descending triangles—size accordingly.
When Does the Descending Triangle Fail?
Bullish breakout above descending resistance instead of support break—common when pattern is reversal base in new bull market. False breakdowns spring below support and reclaim range, trapping shorts. Support that holds on fifth or sixth test without volume deterioration may indicate accumulation under flat line. News gaps can invalidate overnight. Two closes back above broken support after breakdown signal failure—cover shorts. Do not average down on shorts when price reclaims triangle.
If resistance line breaks up before support fails, flip bias—the pattern resolved bullishly.