Best BOS and CHoCH Indicators on TradingView (2026), Code-Read.

Short answer: the popular open-source BOS and CHoCH scripts mostly agree that a close breaks structure; 12 of the 15 we read use one by default. They disagree on what a swing is, from 1 candle a side to 50 candles after it, and none of the 15 waits for the candle to close before it draws the label. The most boosted that labels both, Smart Money Concepts by LuxAlgo (177,689 boosts), reads swing and internal structure and alerts on each. For inducement (IDM), it's Market Structure with Inducements & Sweeps by LuxAlgo. For alerts that wait for the close, Market Structure Confluence by AlgoAlpha, with one gap in how its CHoCH alerts are wired.

Most lists name BOS and CHoCH indicators.

This one reads them.

What we checked

A break of structure (BOS) is a candle closing beyond the last swing high or low in the direction structure already points. A change of character (CHoCH) is the first such close the other way. Every script below draws some version of that; they differ in the details that decide which candle gets which label.

We searched TradingView's scripts for five terms on 31 October 2026 ("bos choch", "choch", "break of structure", "change of character" and "market structure"), which returned 126 scripts: 106 open source, 17 protected and 3 invite-only. We took the 14 most-boosted open-source scripts that label structure breaks on the chart and that we read in full, down to 5,394 boosts, and added LuxAlgo's Smart Money Concepts, which a sixth search, "smart money concepts", finds: its name has none of the five terms. For each, we read every line that decides a swing, a break and its label. Eight questions:

• The swing: how is it found: a pivot with a set number of candles on each side, a fractal, or a zigzag?
• The break: must a candle close beyond the swing, or is a wick enough?
• Internal and swing structure: does it read both, or one?
• The first break the other way: what is it called?
• Inducement (IDM): is it shown?
• When it decides: how many candles after a swing is it known, and does the label wait for the candle to close?
• Alerts: which breaks can you alert on?
• Licence: what may you do with the code?

The table

Boosts as TradingView's search showed them on 31 October 2026. "A side" is the number of candles on each side of a pivot; a pivot is known that many candles after it prints. ATR(17) is the average true range of the last 17 candles.

Seven more in the search rank above the table's last row and aren't in it. One is closed: Market Structure BOS/CHOCH/MSB/FVG/OB/BB by Nephew_Sam_ (30,639 boosts) is protected, free to add with the code hidden. Five don't label breaks on the chart: Flux Charts' Market Structure Dashboard (10,386) lists the last HH, HL, LH and LL on each timeframe in a table; LuxAlgo's Market Structure Oscillator (8,485) is an oscillator whose chart structures are off by default; LuxAlgo's Market Structure Trailing Stop (7,423) draws break lines, dashed for a CHoCH and dotted for a BOS, with no labels; TradingFinder's Turtle Soup ICT Strategy (6,734) labels a higher-timeframe sweep and then an "MSS" level after it: a setup, not a running BOS/CHoCH read; and LuxAlgo's Market Structure (Intrabar) (6,087) draws structure only inside the latest candle, from lower-timeframe candles. The seventh, The_Forex_Steward's Market Structure- ZigZag, Break of Structure & Order Blocks (6,311), runs to 2,266 lines with nine versions of its swing trigger and was updated on 29 October 2026; we didn't finish reading it, so we don't describe it. On fair value gaps: of the 15 we read, only LuxAlgo's Smart Money Concepts draws them; Nephew_Sam_'s protected script names them, and so does twingall's Market Structure & Liquidity: CHoCHs+Nested Pivots+FVGs+Sweeps (4,459 boosts), below our cut. The others in our search that name BOS, CHoCH and FVG all have under 500 boosts.

Why two scripts label the same chart differently

Mostly the swing length, then the break. A longer swing sees fewer, bigger swings, so it labels fewer breaks, and a break that is a CHoCH on a short swing can be the first break, a BOS, on a long one. Try it on one chart:

At 5 candles a side, the 13:00 candle's close is a CHoCH; at 20, the same close is a BOS, because at 20 a side there's no earlier break for it to change. The 08:45 close is a CHoCH at 5 and a BOS at 10. Read with a wick instead of a close, swing length 5 turns 4 labels into 6.

What the code says

LuxAlgo's Smart Money Concepts is the one most traders find, and it does the most. It reads two structures at once: swing structure, from highs that stand above the next 50 candles' highs, and internal structure, from the next 5. A close across the level is a break, and a CHoCH when it goes against the last break; there's an alert for each, swing and internal, up and down. It also draws internal order blocks and equal highs and lows by default, and swing order blocks and fair value gaps once you switch them on. Nothing waits for the candle to close, so a label can print mid-candle and be gone at the close, and a swing is known only 50 candles after it prints. It's shared under CC BY-NC-SA 4.0. The rest of the suite is in our SMC roundup.

EmreKb's, the most-boosted market structure script, has no BOS or CHoCH. It draws a zigzag and labels "MSB" only when its direction changes: the newest zigzag low at least a third of the rise between the two lows below the one before, or the mirror for highs. It judges zigzag points, which are wicks, not closes, and its zigzag records a low only when price turns up to a new 9-candle high, so a bearish MSB can't print before that turn; the label is then drawn back at the level it broke. At each MSB it boxes an order block and a breaker or mitigation block, and it alerts on MSB and on price inside a box. It's shared under the Mozilla Public License 2.0.

Leviathan's and AlgoAlpha's are the plain BOS and CHoCH. Both use pivots, 20 and 10 candles a side, and a close by default, with a "Wicks" option. Leviathan's labels every break BOS unless you switch on "Show CHoCH", which renames the first break against the last one; it has no alerts. AlgoAlpha's shows the CHoCH by default and has alerts that wait for the candle to close, but its CHoCH alerts are wired so they rarely fire: by the time its "Bullish CHoCH" alert is checked, the script has already set the direction to up, so it fires only when one candle breaks both sides, and its "Bullish BOS" alert fires on every break up, a CHoCH included. Its "Bullish Trend Change" alert is the one that fires on a bullish CHoCH, and on the chart's first break. The bearish side is worse: the low break is handled last, so "Bearish CHoCH" can never fire; "Bearish BOS" fires on every break down, and "Bearish Trend Change" fires on a bearish CHoCH. Leviathan's is under the Mozilla Public License 2.0; AlgoAlpha's carries no licence line.

For inducement, LuxAlgo's and TradingFinder's. LuxAlgo's Market Structure with Inducements & Sweeps finds the CHoCH on 50-candle swings, then waits for a wick to take the latest 3-candle swing low, its IDM, before it will label a BOS: a close above the highest high since the CHoCH. A wick above that high which closes back is marked "x", a sweep. TradingFinder's Market Structure Inducements ICT draws its levels before price reaches them: "Bullish ChoCh" at the swing high that would end a downtrend, "BoS" at the highest 1-candle swing high of an uptrend so far, renamed "LQDT" if a wick takes it and the candle closes back, and "IDMT" at the latest 3-candle swing low. Neither has alerts.

LuxAlgo's ICT Anchored Market Structures can rename a label after the fact. It labels three structures at once, ICT's short-, intermediate- and long-term swings, so one close can carry an ST, an IT and an LT label. With its default "Market Structure Validation", a break that sees a close 1 ATR(17) back through the level before one 1 ATR(17) beyond is renamed "SWEEP": a label you saw as a BoS can change later.

Lenny_Kiruthu's reads a higher timeframe in a way that repaints. By default it reads 7-candle pivots on your chart and on 2-hour candles, and calls the first break the other way "MSS". On a live chart, its 2-hour close comes from request.security with no offset, which returns the 2-hour candle still forming; on history it returns the finished one. So a 2-hour BOS can print, and alert at your candle's close, before the 2-hour candle closes, and not be there after a reload if that candle closed back. The very first break gets no label. It's under the Mozilla Public License 2.0.

s3u1l's calls a CHoCH by the swings, not by the last break. It runs seven pivot lengths at once, from 1 to 20 candles a side, and labels a break "CHOCH" when the high it closes above was a lower high, "BOS" when it was a higher high. A close only counts if the candle before didn't already trade beyond the level, so a wick through on one candle cancels a close through on the next. It boxes a zone at the swing on the other side, alerts on new, touched and broken zones, and carries no licence line.

Three more mark breaks without the BOS and CHoCH split. LuxAlgo's Market Structure Break & OB Probability Toolkit labels every break "MSB" and counts one only if the breaking candle's close-to-close move is more than 0.5 standard deviations above its 50-candle average, so a slow close through the level isn't a break. ChartPrime's Market Structure Trend Targets breaks a 10-candle pivot on a wick, prints the level's price at the first break each way and numbers the next ones, with a trailing stop. Nephew_Sam_'s Algo Market Structure builds swings from candle colour and labels "BOS" when a wick goes through the low it protects after a higher high; that BOS turns its structure the other way, which most scripts here would call a CHoCH. Set it to a higher timeframe and it requests that timeframe with lookahead on and no offset, so on history it can use a candle's close before that candle finished.

The rest are close to the textbook. LuxAlgo's Fractal script breaks a 5-candle fractal on a close and names the first break the other way "ChoCH"; its Breakers script does the same on 20-candle pivots and says "MSS" and "MSB". TradingFinder's zigzag labels "Major BoS" and "Major ChoCh" on a close, with Minor structure off by default. None of the three has alerts.

Licences. LuxAlgo's six are shared under CC BY-NC-SA 4.0, which doesn't allow commercial use. EmreKb's, Leviathan's, Lenny_Kiruthu's, ChartPrime's and TradingFinder's two are under the Mozilla Public License 2.0. s3u1l's, AlgoAlpha's and Nephew_Sam_'s carry no licence line.

Ours

Signal Desk isn't on TradingView's search: its full Pine v6 source comes in Pine Pro Library, $49 once. Its BOS and CHoCH tags show when you set View preset to Pro or Full; the default, Clean, hides them. It finds swings with pivots of 5 candles a side by default, adjustable from 2 to 30, so a swing is known 5 candles after it prints. A break is a close beyond the last confirmed swing high or low, checked only once the candle has closed, and each swing breaks once. The first break against the last one is a CHoCH; the first break on a chart is a BOS. The tag sits on the candle that closed through, with no line back to the swing.

Where it does less than the free scripts above: one structure, no internal structure, no IDM, no sweep marks, and no alert on the tag itself. Its alerts are for entries, exits and targets; set Entry trigger to Breakout and an entry needs a BOS or CHoCH in the trend's direction, among its other checks. If you want inducement or two structures on one chart, LuxAlgo's free scripts do that. What Signal Desk adds is a tag decided on the closed candle, so what you see live is what history shows.

Two more of ours use the same kind of break without labelling it. SMC Basics, also in Pine Pro Library, takes a close through a swing confirmed 10 candles later, on closed candles, and boxes the order block that break leaves. The SMC AI-Scored Toolkit, $39, boxes order blocks at structure breaks on bar close and scores each zone 0 to 100.

We haven't tested BOS or CHoCH as a trading rule.

Check one yourself

• The swing: look for ta.pivothigh( and its two numbers, or a high some candles back compared with ta.highest(. The second number is how many candles late a swing is known.
• The break: look for close > or ta.crossover(close against the level. If it compares high instead, a wick is enough.
• The CHoCH: look for the variable that remembers the last break's direction. The label should say CHoCH when the new break goes the other way.
• The close: look for barstate.isconfirmed before the label. None of the 15 free scripts here has one there; Signal Desk's is on line 248 of its source.
• A higher timeframe: request.security with lookahead off and no [1] reads the candle still forming on a live chart.

None of the scripts here, ours included, runs on MT5, MT4 or NinjaTrader 8: Pine Script runs only on TradingView, and an MT5 version would be a new program in MQL5.

Limits

One code read, on 31 October 2026, of the versions TradingView served that day. Scripts change, and boosts measure popularity, not quality. The drill's candles are simulated, and its one rule sweeps the two settings these scripts differ on most; it isn't any script's code. We build and sell Signal Desk and the SMC AI-Scored Toolkit, and we have no relationship with any author named here. Nothing here is financial advice.