Renko Trading Strategy: Rules, Brick Size and Risks

A Renko trading strategy uses price-movement bricks to define trend, entry and exit conditions. The key choices are brick size, price source and confirmation timing. A colour change can be a rule to study, but it does not establish a profitable trade. Renko prices are constructed chart levels; an order may execute elsewhere. That distinction matters before applying the method to Nifty, Bank Nifty or shares.

How a traditional Renko reversal is built

Renko adds bricks when price meets a movement threshold, rather than at evenly spaced times. The Renko chart guide explains the display. Under the traditional construction used in the example below, continuation requires another brick of movement; reversal requires twice the brick size from the last completed close. Some platforms offer modified reversal modes, so confirm the exact setting.

Made-up construction example: choose a fixed brick of 20 price points. Suppose the last completed up brick closes at 1,020 and opens at 1,000. The next up-brick level is 1,020 + 20 = 1,040. The down-reversal level is 1,020 − (2 × 20) = 980. A fall merely back to 1,000 does not complete that opposite brick under this rule.

The reversal distance in that example is 40 points. It describes a chart threshold, not the maximum possible loss. A price gap, delayed confirmation or worse execution can produce a larger loss. Price can also move without immediately leaving a completed brick on the screen.

How many bricks does a price move make?

A quick way to feel the construction is to count bricks. Take a made-up index chart with a fixed brick of 50 points and a last completed up brick that closed at 24,000. If price rises to 24,230, it has gone 230 points above that close. Each 50 points makes one new brick, so 4 bricks are completed (up to 24,200), and the extra 30 points stay unfinished and invisible.

Now suppose price turns down from 24,230. To draw a down brick under the traditional rule, price must close at least two bricks, 100 points, below the last brick's close of 24,200. That level is 24,100. A fall to 24,150 shows nothing new. This is the main reason Renko looks smooth: small moves in the other direction simply do not show.

Three things follow. First, the chart does not tell you how long each brick took. Four bricks might form in an hour or in four days. Second, a gap can complete several bricks at once, so there may have been no price to trade between them. Third, the reversal level of 24,100 is a chart level, and your actual fill may be worse.

Brick size changes the question you are asking

Smaller bricks expose shorter movements and can create more direction changes. Larger bricks can hide pullbacks and delay a reversal. There is no verified universal Nifty or Bank Nifty brick size here. A setting that makes an old chart look smooth has not demonstrated better future results.

StockCharts documents that ATR-based charts can use a different brick value when the ending ATR changes. Keep a record of the chart as it appeared when you made the observation. Do not assume that a reloaded chart reproduces everything visible earlier.

Also distinguish an indicator calculated on Renko bricks from the same indicator on timed candles. A moving average over a set number of bricks covers however long those bricks took to form. It does not represent the same elapsed time as that number of ordinary candles.

Choosing a brick size with ATR: a made-up example

ATR (average true range) measures the typical size of recent price swings. A common idea is to base the brick on it, so the brick follows how active the market is. The method and the look-back period come from your charting platform. TradingView's support page says the box size can be set by hand or by an ATR method, and that the ATR input uses the bars-back length in the chart properties. Check your own platform's help page for the exact setting.

Here is a made-up illustration. If the recent ATR for a Nifty chart were 150 points, a brick equal to the ATR would be 150 points and a reversal would need 300 points. A brick of half the ATR would be 75 points with a 150 point reversal. The smaller brick gives earlier signals and more reversals. The larger brick gives fewer signals and bigger stops. Neither is correct on its own, so state the choice and the reason in your notes.

The last column shows why brick size is also a money decision. A reversal brick on the 150-point setting spans 300 points, or 19,500 rupees on one lot of 65. If your loss limit per trade is smaller than that, you need a separate and tighter stop, or fewer lots. Look at average true range for how ATR is measured.

A sample trend-following rule set to evaluate

The following is an educational specification, not a recommendation to enter a trade. Its purpose is to make the method clear enough to review. It has no claimed win rate or return. Choose the instrument and construction settings before collecting observations, and keep them unchanged during that review.

1. Context: mark a previously observed resistance level, meaning an area where upward movement stalled. Write down the level before a later breakout appears.
2. Entry condition: record a completed up brick beyond that level. A projected brick [an unfinished, temporary brick] does not meet this sample condition.
3. Execution record: after confirmation, use the subsequent actual order price and time. Do not assume the order traded at the earlier brick boundary.
4. Failure condition: specify a separate price-based stop and a maximum holding time before the position begins. A reversal brick alone does not cap the loss.
5. Exit condition: record the first confirmed opposite brick, or the earlier prewritten stop or time exit. Record the actual execution separately from the chart level.

A moving-average filter is another hypothesis to compare. Define its data source and conditions before evaluating it. A filter may discard useful trades as well as losing ones; no evidence here establishes that it removes most losses. Avoid repeatedly changing the rules to fit a handful of old winners.

Renko vs candlesticks vs Heikin Ashi

These three chart types draw the same market in different ways. Each hides something.

Heikin Ashi keeps the time axis but changes the prices. Renko drops the time axis and keeps only the price moves. If you are comparing the two, read the Heikin Ashi trend strategy and how to trade with Renko charts. For the basics of the chart itself see the Renko charts page.

Where Renko tends to help and where it fails

Renko is a trend-reading tool, and it behaves differently depending on the market. No result in this section is measured; it describes how the construction works.

• Steady trends. Bricks of one colour line up, the chart looks clean, and it is easy to see that the direction has not changed.
• Choppy sideways markets. Price swings back and forth by about two bricks, so the colour keeps flipping. Each flip is a new signal and each can lose about the reversal distance. With a 50-point brick, every failed flip is a 100-point swing against you, which is 6,500 rupees on a lot of 65 (100 × 65), before costs.
• Sharp spikes and gaps. A fast move completes several bricks at once. You may see a strong signal after the move is already over.
• Quiet markets. If the price moves less than the brick size, no new brick forms and the chart stands still. That can look like safety, but it hides the time you are paying for in an option.

Because of this, many traders pair Renko with a separate higher-timeframe view, or a level such as support or resistance, and do not treat a colour change as a signal on its own. See the trend following strategy page for the wider picture and the false breakout page for a failure mode that Renko does not remove.

Worked example: chart profit versus the price actually received

Fictional cash-share example: use the same 20-point fixed brick. A later up brick is confirmed at 1,040. Only after confirmation, assume a purchase actually executes at ₹1,042 for 10 shares. These are invented prices and quantity for a hypothetical share, with no current index lot-size assumption.

Assume the last completed up brick eventually closes at 1,120. A traditional reversal then needs 2 × 20 = 40 points in the opposite direction. Its chart level is 1,120 − 40 = 1,080. After that reversal is confirmed, assume the sale actually executes at ₹1,078.

The two-point difference at each execution reduces the apparent chart gain before costs. Neither favourable nor adverse execution is fixed by the brick size. Real results require actual quantities, execution records and all applicable charges. This example excludes income tax and any other account costs.

Why Renko backtests can look better than reality

TradingView warns that strategies using synthetic [constructed rather than traded] chart prices can produce results that do not represent actual market conditions. Its Renko documentation also says projected bricks can disappear on reload, and historical bricks are approximated from interval data rather than a full tick-by-tick path.

Use the chart for interpreting structure while evaluating executions against ordinary market-price records at the relevant times. Fixed bricks do not by themselves solve synthetic-price execution errors. The backtesting guide provides broader context for testing a written trading rule.

• Keep the original confirmation time, screenshot and settings beside each observation.
• Check whether several bricks appeared together. Do not assume there was an opportunity to trade separately at each boundary.
• Include the difference between intended and actual execution, called slippage, and the costs of losing trades too.
• Review alternating-brick periods and gaps, rather than inspecting only smooth directional runs.
• Record how often the rules leave you waiting without a brick, and whether a timed exit would have happened first.

What to record in your journal for each Renko trade

Renko trades are easy to misjudge afterwards because the chart redraws itself in your memory as clean. Keep a short, fixed record for each trade so you can review what really happened. OneTradeJournal logs trades by hand, and each trade can hold the strategy name, stop, target, emotions, mistakes, plan deviation and notes.

• The brick size or ATR setting and the instrument.
• The time the confirming brick completed, and your actual order time and price.
• The gap between the brick level and your fill, called slippage.
• The stop you set before entry, and whether you followed it.
• The net result in rupees after charges, and the reason you exited.
• Whether the market was trending or choppy, by your own note at the time.

After a few dozen trades, sort them by market type and brick size. If most losses cluster in choppy periods, the journal shows it, and you can decide whether to skip those periods. Do not draw conclusions from a small number of trades. For testing a written rule against past data, see backtesting strategies, and for the gap between tests and live trading see backtest vs live results.

Using an index chart for an option trade

Keep the signal chart and traded contract separate. An index movement does not translate into the same change in an option premium. Options also respond to remaining time and implied volatility [uncertainty reflected in premiums]. A clean index trend can coexist with a losing bought option.

For an option-based observation, record the actual strike, expiry, premium and contract quantity. Calculate the result from premium execution prices, rather than multiplying index points by an option lot. Track the planned stop-loss order separately; the chart itself places no order or guarantees an exit price.

Sizing a Renko trade from the reversal distance

Position size comes from the rupees you are willing to lose, not from the chart. Take a made-up Bank Nifty-type index trade with a 100-point stop that you set from the chart structure. The lot of Bank Nifty is 30 in the NSE lot size file for the Nov-26 contracts. A 100-point adverse move on one lot of futures is 100 × 30 = 3,000 rupees, before costs. If your loss limit for the trade is 6,000 rupees, you can take 2 lots (2 × 3,000 = 6,000). If it is 2,000 rupees, you cannot take one lot with that stop.

The reversal brick is not the stop. Waiting for a reversal brick of 2 × 50 = 100 points to complete may cost more than the stop you planned, since the brick closes only after the move. Write your stop before the trade, as a price, and check both numbers. Take the lot size from the F&O lot size and expiry calendar, not from memory, because exchanges revise it. The stop loss guide covers placing the stop.

Renko strategy questions

Sources

• TradingView: Renko construction and projected bricks, checked 16 October 2026.
• Sierra Chart: standard and modified reversal modes, checked 16 October 2026.
• StockCharts: fixed and ATR bricks, checked 16 October 2026.
• TradingView: unrealistic strategy results on synthetic charts, checked 16 October 2026.
• OCC: factors affecting option premiums, checked 16 October 2026.