What the measurements mean, and how setups like these have actually resolved.
Every NSE stock in the EQ series with median 60-day turnover of ₹5 crore or more, above that floor on at least 80% of the last 60 sessions, priced ₹20 or above. The consistency test is what removes stocks whose liquidity arrives in one-day bursts. Membership is stored per date and never recomputed from today's list, so historical measurements are not contaminated by knowing which stocks survived.
A base is a consolidation after an advance. The detector requires a prior move of 25% or more, then a range of at least six weeks holding beneath its ceiling, with depth between 8% and 40%. Prices are adjusted for splits and bonuses; days locked at circuit are counted and disqualify a base beyond a small tolerance.
Tightening — second-half range divided by first-half range.
Below 1 means the base is quietening.
Volume dry-up — second-half average volume over first-half. Supply
withdrawing is the mechanism the pattern is trying to detect.
Delivery trend — the share of volume actually taken to demat,
later half versus earlier. Above 1 means a rising proportion of buyers are
keeping the shares rather than trading them intraday.
Contractions — the sequence of pullbacks inside the base, measured
at the scale that reveals its structure rather than its noise.
A breakout and a buyable breakout are different things. Within 5% of the pivot the stop is tight and the risk-reward is intact. Beyond that the same setup carries more risk for the same reward, which is why extended names are labelled rather than hidden.
Every breakout the detector has found since 2018, measured 63 sessions forward. No filtering, no hindsight selection.
Edge is the average 63-session return minus the equal-weight universe return over the identical window.
Measurements only, not investment advice. Not SEBI registered. Past behaviour of similar setups is not a prediction. Backtest-style figures are hypothetical and exclude costs, slippage and taxes.