Contraction to expansion

Inside Bar Breakout

From Classic price actionRead about it

An inside bar is a day that trades entirely within the day before (the 'mother bar'): a pause in which neither side wins. A close above the mother bar's high, in an uptrend, is read as the pause resolving upwards.

Yearly return, after costs−2.1%Nifty 500 +11.5% over the same years

Worst fall−45.9%Win rate44%Matches now0

How it works

The signal every rule true at the close

Yesterday's high and low were both inside the day before's range
Today closes above that mother bar's high
Close above the 50-day average, and the 50-day above the 200-day

The exit whichever comes first

Closes below the mother bar's low
Or after 10 trading days

Typical holdingUp to 2 weeks

An example from the backtestAcme Solar Holdings ACMESOLARThe rules were met at the close before 1 Sep 2026. The trade opened that morning and closed on 17 Sep 2026, 11 trading days later, +3.4% after costs. Exit: 10 days passed.

Stocks meeting the rules 0

At the close of 1 Oct 2026, among NSE's 500 most-traded stocks. A screen, not a recommendation: in the backtest, a trade opened at the next day's open.

No stock among the 500 most-traded met every rule at the last close. Strategies like this wait for their setup; the list fills again when one appears.

Backtest

1 Jan 2016 to 1 Oct 2026: a 10-stock portfolio following these rules on NSE's 500 most-traded stocks at each date, after 0.2% costs on each side, against the Nifty 500 index.

Yearly return−2.1%Index +11.5%

Compound growth a year (CAGR).

Total return−21%Index +224%

Gain or loss over the whole test.

Worst fall−45.9%Index −38.3%

Largest drop from a high (max drawdown).

Win rate44.2%

Share of trades that closed with a gain.

Profit factor1.01

Rupees gained for every rupee lost.

Average trade+0.02%

Average result per trade, after costs.

Average gain · loss+7.6% · −6.0%

A typical winning and losing trade.

Days held9.4

Average trading days per trade.

Trades2,564

About 239 a year.

Sharpe ratio-0.01

Return for each unit of ups and downs.

Time invested91%

Average share of the money in trades.

Best · worst trade+92% · −38%

The extremes, after costs.

₹1 lakh following the rules

1 Jan 2016 to 1 Oct 2026: ₹0.79 L against ₹3.24 L in the Nifty 500.

Inside Bar BreakoutNifty 500

Falls from the high

Worst in this period −45.9%

Each calendar year

Return in the year, after costs.

Inside Bar BreakoutNifty 500

How the 2,564 trades ended

Each trade's return after costs, grouped.

GainLoss

How sturdy is it?

The same rules, tested again with one thing changed. A result worth trusting holds up across these; a big swing means the headline figure depends on luck or on the exact setup.

Beat the Nifty 500 in 0 of 5 versions and in 0 of 2 halves of the test.

Version	Yearly return	Worst fall	Win rate	Profit factor	Trades
As published10 stocks at a time, 0.2% costs on each side	−2.1%	−45.9%	44.2%	1.01	2,564
With the market filterNew trades only while the Nifty 500 is above its 200-day average	−3.8%	−44.5%	43.5%	0.97	2,074
Costs doubled0.4% on each side, as slippage in thinner stocks can be	−10.9%	−74.0%	42.3%	0.89	2,564
5 stocks at a timeA bigger share of the money in each trade	−2.3%	−54.3%	44.6%	1.02	1,315
20 stocks at a timeA smaller share in each trade	−2.4%	−42.1%	44%	1	4,798

First half · 1 Jan 2016 to 21 May 2021

Strategy+1.8%/yr

Nifty 500+12.8%/yr

Behind the index by 11.0 points a year.

Second half · 21 May 2021 to 1 Oct 2026

Strategy−5.9%/yr

Nifty 500+10.3%/yr

Behind the index by 16.2 points a year.

Recent trades in the backtest

The last 12 trades the rules closed, with 10 still open.

Stock	Opened	Closed	Days	Return	Why it closed
Petronet LNGPETRONET	29 Sep 2026	30 Sep 2026	1	−0.3%	Closed below the mother bar's low
PhysicswallahPWL	21 Sep 2026	30 Sep 2026	7	−7.7%	Closed below the mother bar's low
Concord BiotechCONCORDBIO	21 Sep 2026	29 Sep 2026	6	−9.7%	Closed below the mother bar's low
Aegis LogisticsAEGISLOG	21 Sep 2026	29 Sep 2026	6	−8.4%	Closed below the mother bar's low
Five-Star Business FinanceFIVESTAR	15 Sep 2026	29 Sep 2026	10	−7.7%	Closed below the mother bar's low
One 97 CommunicationsPAYTM	15 Sep 2026	28 Sep 2026	9	−8.1%	Closed below the mother bar's low
VA Tech WabagWABAG	10 Sep 2026	28 Sep 2026	11	−6.3%	10 days passed
SML MahindraSMLMAH	10 Sep 2026	17 Sep 2026	4	−7.7%	Closed below the mother bar's low
Mrs. Bectors Food SpecialitiesBECTORFOOD	10 Sep 2026	17 Sep 2026	4	−9.4%	Closed below the mother bar's low
Acme Solar HoldingsACMESOLAR	1 Sep 2026	17 Sep 2026	11	+3.4%	10 days passed
Lenskart SolutionsLENSKART	1 Sep 2026	17 Sep 2026	11	+1.7%	10 days passed
BlueStone Jewellery and LifestyleBLUESTONE	15 Sep 2026	16 Sep 2026	1	−7.2%	Closed below the mother bar's low

How the tests work

Universe. The 500 most-traded NSE stocks at each date, by six-month average traded value, re-ranked every month: 1,353 different stocks over the years, 131 of which no longer trade. Testing all of them, not only today's survivors, keeps the results honest.
Period. 1 Jan 2016 to 1 Oct 2026, after a year of history for the long averages, on NSE's own end-of-day files: prices, delivery and futures open interest.
Portfolio. 10 slots, each a tenth of the portfolio's value when a trade opens. A signal at a day's close opens at the next day's open; an exit rule met at a close closes the trade at the next open. When there are more signals than free slots, the strategy's own ranking decides.
Costs. 0.2% on each side of every trade (STT, stamp duty, exchange charges and slippage). Tax and DP charges are not included.
Market filter. Every strategy is also tested opening new trades only while the Nifty 500 closes above its 200-day average. At the last close it was below it.
Robustness. Each strategy is run again with costs doubled, with 5 and with 20 stocks at a time, and judged separately in each half of the test. A result that only holds in one setup is luck, not an edge.
Corporate actions. Splits, bonus issues and demergers are applied from NSE's corporate-actions list, and symbol changes are joined up, so none of them shows up as a gain or a loss.
What is left out. Dividends (as in the Nifty 500 price index it is measured against), taxes, and the chance that a large order moves a thinly traded price.

Swing Lab is a screen and a history lesson, not advice. RupeeVerse is not registered with SEBI as an investment adviser or research analyst. A stock meeting a strategy's rules is not a recommendation to trade it, and past results do not predict future ones. Do your own research.