Spring

Spring automates the phase C test at the base of an accumulation range, the definitive clean build of the Wyckoff spring with its grading rules stated up front. The script first constructs the range: support anchored by swing lows, held for a minimum duration and probed a minimum number of times, so stops have time to build beneath it. Only then can an undercut qualify: a break closing back above the level inside the allowed window prints the event; a longer stay below is a breakdown.

How to Trade the Spring?

• Spring · A/B/C label: printed at the probe low with a grade: one point each for shallow penetration, quiet probe volume and a fast reclaim.
• Shakeout label: a deep undercut on heavy volume, the more violent variant of the same trap.
• Test label: the confirmation: a later swing low holding at or above the spring low, near the lows, on volume under the set fraction of the probe's.
• Failed label: a close back under the spring low, or acceptance below the range, voids the read.

The dashed spring-low line is where the read stops being defensible, the stop's natural home.

Spring Settings

• Swing Length (default 5): pivot confirmation for the lows that build and test support.
• Minimum Range Duration (default 20) and Minimum Support Tests (default 2): how long and how often support must hold to count as established.
• Support Zone Width (default 0.5) with ATR Length (default 14): the ATR-normalized tolerance grouping lows into one level.
• Maximum Bars Below Support (default 5): the reclaim deadline separating springs from breakdowns.
• Deep Penetration Threshold (default 1.0), Heavy Probe Volume (default 1.5), Fast Reclaim Threshold (default 2) and Volume Average Length (default 20): the grading dials and their volume baseline.
• Test Window (default 30) and Maximum Test Volume (default 0.75): how long a confirming test may take and how quiet it must stay.

Frequently Asked Questions

What is the bearish counterpart?

When does the label say Shakeout instead of Spring?

Why demand an established range first?