ICT SIBI and BISI Explained — Sell-Side & Buy-Side Imbalance FVGs + Free PDF
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SIBI and BISI are two of the most important ICT concepts every trader should master. They are the directional types of ICT Fair Value Gap — SIBI for the bearish version, BISI for the bullish — and understanding them clarifies how price imbalance actually works on the chart.
SIBI stands for Sell-side Imbalance Buy-side Inefficiency. BISI stands for Buy-side Imbalance Sell-side Inefficiency. Both are 3-candle imbalance patterns; the difference is direction. Once I understand which is which, I know whether the FVG I am looking at signals strong selling pressure (SIBI) or strong buying pressure (BISI), and I can position accordingly.
This guide is the full breakdown of ICT SIBI and BISI — what each one means, how they form, the bullish and bearish setups, the step-by-step trade flow, the common mistakes I see traders make, and the answers to the questions I get most often.
What is SIBI?
SIBI is the abbreviation for Sell-side Imbalance Buy-side Inefficiency.
It is a bearish fair value gap formed by an impulsive downward price movement driven primarily by sellers, with minimal buying activity to counter the move. Three large bearish candles with short wicks print in sequence, and the gap between the low of the first candle and the high of the third candle becomes the SIBI zone.
The “imbalance” is on the sell side — sellers dominated. The “inefficiency” is on the buy side — buyers were absent enough that the price levels between candle 1’s low and candle 3’s high were never traded with overlap. Hence the full name: Sell-side Imbalance, Buy-side Inefficiency.
How to Use SIBI in Trading
Relying solely on SIBI for trade entries is not advisable. To use SIBI effectively, align it with other ICT concepts — particularly the ICT PD Array framework, the daily bias, and lower-timeframe Market Structure Shift confirmation.
A SIBI performs three main functions in trading:
(I) Trade Execution. The SIBI zone is the entry area for sell trades after a confirming Market Structure Shift on the lower timeframe. Wait for the MSS, then enter on the retest of the SIBI.
(II) Resistance. The SIBI acts as resistance — it prevents price from moving back above the imbalance. Price returning to a SIBI typically gets rejected, which is why it makes a good short entry zone.
(III) Stop Loss Placement. Stop loss on a SIBI sell trade is typically placed above the high of the first candle (the topmost candle of the 3-candle SIBI sequence), with a small buffer.
What is BISI?
BISI is the abbreviation for Buy-side Imbalance Sell-side Inefficiency.
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It is the bullish counterpart of SIBI — a fair value gap formed by an impulsive upward price movement driven predominantly by buyers, with minimal selling activity to counter it. Three large bullish candles with short wicks print in sequence, and the gap between the high of the first candle and the low of the third candle becomes the BISI zone.
The “imbalance” is on the buy side — buyers dominated. The “inefficiency” is on the sell side — sellers were absent enough that the price levels between candle 1’s high and candle 3’s low were never traded with overlap. Hence the full name: Buy-side Imbalance, Sell-side Inefficiency.
How to Use BISI in Trading
BISI alone is not enough — pair it with other ICT concepts (PD Array, daily bias, MSS) for the cleanest setups.
A BISI performs three main functions in trading:
(I) Trade Execution. The BISI zone is the entry area for buy trades after a confirming Market Structure Shift on the lower timeframe. Wait for the MSS, then enter on the retest of the BISI.
(II) Support. The BISI acts as support — it prevents price from falling back below the imbalance. Price returning to a BISI typically gets rejected upward, which is why it makes a good long entry zone.
(III) Stop Loss Placement. Stop loss on a BISI buy trade is typically placed below the low of the first candle (the bottommost candle of the 3-candle BISI sequence), with a small buffer.
Step-by-Step SIBI/BISI Trade Flow
This is the exact sequence I run on every SIBI or BISI setup. Save it, print it, do not skip a step.
- Set the daily bias using ICT Daily Bias. Trade SIBI for sells when the bias is bearish; trade BISI for buys when the bias is bullish.
- Mark the higher-timeframe PD Array on the daily, 4-hour, or 1-hour chart — the level where price delivery is expected to begin.
- Wait for price to approach the higher-timeframe PD Array.
- Drop to the 5-minute or 3-minute chart at the moment of the tap.
- Watch for the displacement leg in the direction of the daily bias — three large candles with short wicks creating the SIBI (bearish) or BISI (bullish) imbalance.
- Confirm with a Market Structure Shift on the lower timeframe. Without the MSS, the SIBI/BISI is a continuation pattern, not a high-probability entry.
- Mark the SIBI or BISI zone precisely — the gap between candle 1 and candle 3.
- Wait for the retest back into the imbalance. Do not chase the displacement leg.
- Execute the trade on the retest, with stop loss above the high of candle 1 (for SIBI sells) or below the low of candle 1 (for BISI buys), with a small buffer.
- Take profit at the next significant draw on liquidity in the trade direction.
SIBI vs BISI — Quick Comparison
The two patterns are mirrors of each other. The fastest way to remember which is which:
SIBI — three bearish candles, sell-side dominates, buy-side inefficient, gap between candle 1 LOW and candle 3 HIGH. Used as resistance for short entries. Stop above candle 1 high.
BISI — three bullish candles, buy-side dominates, sell-side inefficient, gap between candle 1 HIGH and candle 3 LOW. Used as support for long entries. Stop below candle 1 low.
Same 3-candle imbalance pattern. Opposite direction. Opposite trade.
USA Trading Note — ES & NQ Futures
For US-based traders, SIBI and BISI imbalances print cleanest on US index futures — NASDAQ 100 (NQ Futures) and the E-mini S&P 500 (ES Futures). The CME futures session structure produces the precise displacement candles SIBI/BISI need because price delivery on US futures is typically tighter than lower-volume markets. ES and NQ are CFTC-regulated futures and execute through a US futures broker (NinjaTrader, AMP, Tradovate, or a prop firm such as Topstep). The major USD forex pairs (GBP/USD, EUR/USD) and Gold (XAU/USD) also respect SIBI/BISI mechanics. TradingView is for chart analysis only.
Common Mistakes I See Traders Make on SIBI and BISI
Five mistakes account for the majority of failed SIBI/BISI trades I see in the comments. Avoid these and the patterns convert at a much higher rate.
- Trading every SIBI and BISI on the chart. Not every imbalance is tradable. The reliable ones print at higher-timeframe PD Array taps with confirming Market Structure Shifts. Random SIBI/BISIs in the middle of trending price without context are coin flips.
- Trading SIBI in a bullish market or BISI in a bearish market. SIBI is a sell-direction tool; BISI is a buy-direction tool. Counter-bias entries fail far more often than aligned ones. Filter every setup through the daily bias.
- Confusing SIBI and BISI. SIBI = bearish; BISI = bullish. Mixing them up inverts your trade direction. The mnemonic: S(IBI) starts with S like Sell; B(ISI) starts with B like Buy.
- Stop loss inside the imbalance zone. Place the stop beyond the high of candle 1 (SIBI) or the low of candle 1 (BISI), with a small buffer. Stops inside the SIBI/BISI body get tagged on the typical re-test spike.
- Skipping the Market Structure Shift confirmation. A SIBI or BISI without an MSS in the trade direction is a weaker signal. Wait for the lower-timeframe MSS before pulling the trigger.
Final Thoughts on SIBI and BISI
Not every SIBI and BISI on the chart is tradable. To trade them effectively, use them in conjunction with other ICT tools — daily bias, higher-timeframe PD Array, lower-timeframe Market Structure Shift, and the premium / discount framework. At those filtered levels, SIBI and BISI become reliable entries. Used in isolation, they are just two coincidental candle shapes. Always trade with a stop loss in place — no strategy is foolproof.
FAQs About ICT SIBI and BISI
What does SIBI stand for?
SIBI stands for Sell-side Imbalance Buy-side Inefficiency. It is the bearish version of an ICT fair value gap — a 3-candle pattern where sellers dominate and buyers are inefficient, leaving an unfilled gap between candle 1’s low and candle 3’s high.
What does BISI stand for?
BISI stands for Buy-side Imbalance Sell-side Inefficiency. It is the bullish version of an ICT fair value gap — a 3-candle pattern where buyers dominate and sellers are inefficient, leaving an unfilled gap between candle 1’s high and candle 3’s low.
What is the difference between SIBI and BISI?
SIBI is bearish — used for sell trades, acts as resistance, stop above candle 1’s high. BISI is bullish — used for buy trades, acts as support, stop below candle 1’s low. Same imbalance mechanic, opposite direction.
How do I trade a SIBI?
Wait for a higher-timeframe PD Array tap, drop to the 5-minute, watch for a Market Structure Shift to the downside, mark the SIBI imbalance, wait for price to retrace into it, then short with stop above the SIBI high.
How do I trade a BISI?
Wait for a higher-timeframe PD Array tap, drop to the 5-minute, watch for a Market Structure Shift to the upside, mark the BISI imbalance, wait for price to retrace into it, then buy with stop below the BISI low.
Are SIBI and BISI the same as fair value gaps?
Yes — SIBI and BISI are directional names for fair value gaps. SIBI is the bearish FVG; BISI is the bullish FVG. The mechanics are identical to a regular FVG; the labels just specify the direction.
Where do I place stop loss on a SIBI or BISI trade?
SIBI: above the high of candle 1 (the topmost candle of the 3-candle sequence), with a small buffer. BISI: below the low of candle 1 (the bottommost candle), with a small buffer. Stops inside the imbalance get tagged routinely.
Can I trade SIBI and BISI alone?
You can, but the win rate is much lower. The reliable setups pair SIBI/BISI with the daily bias, a higher-timeframe PD Array tap, and a lower-timeframe Market Structure Shift. Use them in context, not in isolation.
What instruments work best for SIBI and BISI?
US index futures (NASDAQ 100 / NQ and E-mini S&P 500 / ES) produce the cleanest SIBI/BISI imbalances. Major forex pairs (GBP/USD, EUR/USD) and Gold (XAU/USD) also respect the same mechanics.
ICT SIBI and BISI PDF Download
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In case of BISI we need 3 green candle and for SIBI we need 3 red candle ?
Yes, Adarsh, exactly that. BISI (Buyside Imbalance Sellside Inefficiency) is a bullish 3-candle FVG — typically with green/bullish dominance and an unfilled gap between the high of candle 1 and the low of candle 3. SIBI (Sellside Imbalance Buyside Inefficiency) is the bearish mirror with red/bearish dominance.