ICT (Inner Circle Trader) methodology has its own precise vocabulary. Terms like CISD, CHoCH, MSS, FVG, OTE, and PD Array all have specific meanings — and using them incorrectly leads to misread setups and bad entries. This glossary defines each core term clearly, explains how it fits into the broader ICT framework, and serves as a reference you can return to whenever you need a quick definition.
Each definition is written for traders who are actively applying these concepts on TradingView. This is not an introductory explainer — it assumes you are familiar with basic price action and are working toward implementing the full ICT entry model.
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Start Free 7-Day TrialStructure & Entry Signals
CISD — Change in State of Delivery
CISD is the entry confirmation signal in ICT methodology. It describes the moment price structurally confirms that delivery has shifted from one direction to another — from bullish to bearish or vice versa. Mechanically, CISD is a lower timeframe structural break that occurs during the displacement phase after a higher timeframe liquidity sweep. It is identified by a strong close beyond the CISD level, creating a protected high or low that confirms the shift. CISD is not just a pattern — it is the final step in the sequence: liquidity exists → sweep occurs → displacement begins → CISD fires → entry.
BOS — Break of Structure
BOS is a trend continuation signal. It occurs when price breaks a significant swing high (uptrend) or swing low (downtrend) in the direction of the prevailing trend. A new higher high in an uptrend is a bullish BOS; a new lower low in a downtrend is a bearish BOS. BOS tells you the trend is intact and continuing. It is not an entry signal — the optimal entry is at the next retracement with CISD confirmation, not at the BOS candle itself.
CHoCH — Change of Character
CHoCH is the first internal structural break against the prevailing trend — the earliest warning that reversal may be developing. In a downtrend, a CHoCH occurs when price breaks above the most recent lower high. In an uptrend, it occurs when price breaks below the most recent higher low. CHoCH alone has a high failure rate because it can occur as a retracement before trend continuation. Use CHoCH to shift your bias and start watching for CISD — not as an entry trigger itself.
MSS — Market Structure Shift
MSS is a stronger reversal signal than CHoCH. It occurs when price breaks a more significant structural level against the trend — typically a major swing high or low, often following a higher timeframe liquidity sweep. An MSS signals that institutional order flow has shifted direction. The CISD entry fires during the displacement that follows an MSS. In the full ICT entry model, the sequence is: HTF sweep → LTF MSS → displacement → CISD entry.
Price Delivery Zones (PD Arrays)
Order Block (OB)
An order block is the last opposing candle before an impulsive displacement move. The last bearish candle before a bullish move is a bullish OB; the last bullish candle before a bearish move is a bearish OB. The body of that candle (open-to-close range) defines the zone. OBs mark where institutional orders were clustered and are valid entry locations when price returns — but only with CISD confirmation that the move has resumed.
FVG — Fair Value Gap
An FVG is a 3-candle imbalance created when price moves so rapidly that a gap exists between candle 1's high and candle 3's low (bullish FVG) or candle 1's low and candle 3's high (bearish FVG). No two-sided trading occurred in this range — institutions delivered through it without balancing. Price frequently returns to FVGs before continuing, making them valid entry zones. Like OBs, FVG entries require CISD confirmation to avoid being swept before the real move.
IFVG — Inversion Fair Value Gap
An IFVG is an FVG that price has fully passed through and traded beyond. Once price fills an FVG completely, the zone inverts — a bullish FVG becomes a bearish resistance zone, and a bearish FVG becomes a bullish support zone. IFVGs represent a confirmed repricing: institutions are now using that level in the opposite direction. IFVGs are particularly powerful entry zones because they combine zone logic with a confirmed structural shift.
Breaker Block
A breaker block is an order block that price has traded through and violated — then inverted. When a bullish OB fails to hold and price trades below it, that former demand zone becomes a supply zone. Breaker blocks are the OB equivalent of IFVGs: failed zones that invert and become opposing institutional areas. They are often targeted as re-entry zones after a structural shift.
PD Array — Premium and Discount Array
PD Array refers to the full collection of institutional price delivery zones arranged across a range — from premium (above equilibrium) to discount (below equilibrium). The array includes order blocks, FVGs, breaker blocks, mitigation blocks, liquidity voids, and propulsion blocks. ICT teaches that price is always moving from one PD Array to another. In a bullish trend, price delivers from discount PD Arrays upward; in a bearish trend, from premium PD Arrays downward.
Liquidity Concepts
Liquidity (SMC Definition)
In Smart Money Concepts, liquidity refers to clusters of pending orders — primarily stop-loss orders — sitting at predictable price levels. These clusters exist because retail traders follow consistent patterns: stops above swing highs (when short) and below swing lows (when long). Institutions target these clusters to fill large positions. A liquidity pool is a location; a liquidity sweep is the event of triggering it.
Buy-Side Liquidity (BSL)
Buy-side liquidity is the cluster of stop orders sitting above swing highs, equal highs, and round numbers. It consists of stop-loss orders from short traders plus buy-stop orders from breakout traders. When an institution wants to fill a large short position, they need buyers — sweeping BSL provides them. The spike above the high is the fill, not a breakout. Price reverses after the fill and delivers lower.
Sell-Side Liquidity (SSL)
Sell-side liquidity is the cluster of stop orders sitting below swing lows, equal lows, and round numbers. It consists of stop-loss orders from long traders plus sell-stop orders from breakdown traders. Institutions sweep SSL to fill large long positions — they buy from traders being stopped out at the low. The wick below the swing low is the institutional fill. Price then reverses and delivers higher.
Equal Highs (EQH) and Equal Lows (EQL)
Equal highs are two or more swing highs at approximately the same price level. Equal lows are two or more swing lows at the same level. In retail analysis, these are double tops and double bottoms — potential reversal patterns. In ICT methodology, they are high-density liquidity pools. Each additional touch at the same level adds more stop orders. EQH and EQL are among the most reliably swept levels in the market — institutions target them before delivering in the opposite direction.
Sweep
A sweep is the event of price briefly moving beyond a liquidity level to trigger the stop orders clustered there, then reversing sharply. The sweep is the institutional order fill — they are buying stops at lows or selling into buys at highs. The reversal following the sweep is the delivery phase. The sweep itself is the signal that a high-probability CISD entry may be setting up on the lower timeframe.
Inducement
Inducement is a deliberate small move in one direction designed to draw retail traders into the wrong position before a major sweep in the opposite direction. Inducement creates the stops that add to the liquidity pool that will be swept next. Recognizing inducement — a minor internal sweep that precedes the real sweep — prevents entering at the wrong level and helps identify where the actual entry will come from.
Range and Zone Concepts
Premium Zone
The premium zone is the upper half of any defined range — above the 50% equilibrium level. In ICT methodology, selling from premium is the highest-probability direction in a bearish trend. Institutions sell in premium (above fair value) and buy in discount (below fair value). Entering a long in the premium zone of a range is a low-probability trade; looking for shorts in premium aligns with institutional flow.
Discount Zone
The discount zone is the lower half of any defined range — below the 50% equilibrium level. In a bullish trend, the highest-probability long entries are in the discount zone, where price is below fair value. Institutions accumulate long positions at a discount and distribute at premium. The OTE (62–79% retracement) sits inside the discount zone and is the primary entry target for trend continuation.
OTE — Optimal Trade Entry
OTE stands for Optimal Trade Entry. It refers to the 62–79% Fibonacci retracement zone of a displacement move — the range where price most commonly retraces before continuing in the direction of displacement. A bullish OTE is in the discount zone of the displacement swing; a bearish OTE is in the premium zone. OTE is a location filter — once price reaches the OTE zone, you still need CISD confirmation to enter.
Protected High / Protected Low
A protected high is the most recent significant swing high that has not been taken out — it is 'protected' because price has not yet traded above it. A protected low is the equivalent in the opposite direction. In ICT structure analysis, the protected high defines the current swing ceiling and the protected low defines the floor. When a protected high is broken with displacement, a bullish BOS has occurred. When a protected low is broken with displacement, a bearish BOS or MSS has occurred.
Timeframe and Session Concepts
HTF / LTF — Higher Timeframe / Lower Timeframe
HTF and LTF are relative terms in ICT. HTF (Higher Timeframe) defines the bias — typically the Daily, 4H, or 1H depending on your trading style. LTF (Lower Timeframe) is where entries are executed — typically the 15m, 5m, or 1m. The core HTF/LTF principle: HTF defines direction and key levels, LTF provides the precision entry signal (CISD) within that context. Trading LTF setups against the HTF trend is one of the highest-frequency account-damaging mistakes in ICT trading.
Kill Zones
Kill zones are the time windows during each trading day when institutional order flow is highest and ICT setups are most reliable. The four main kill zones are: London Open (2–5 AM EST), which often sets the daily high or low; New York Open (7–10 AM EST), which produces the highest-volume reversals and continuations; New York Lunch (12–1 PM EST), which sees reduced volume and chop; and New York Close (3–4 PM EST), which sets up for the overnight session. The highest-probability CISD entries happen during London and New York open kill zones.
Displacement
Displacement is the strong, impulsive price move that follows a liquidity sweep. It is characterized by velocity (fast move), range expansion (large candles), and imbalance (FVGs left behind). Displacement is the evidence that institutions have filled their position and are now actively delivering price in the new direction. CISD fires during displacement — it is the structural confirmation that the displacement has genuinely begun, as opposed to a false move that reverses back into the sweep.
SMC X: Auto-Marking These Concepts on TradingView
Understanding these concepts is one layer of the puzzle. Identifying them in real time on a live chart — across multiple timeframes, during active sessions — is the execution challenge that most traders underestimate. Manually scanning for sweeps, then dropping to the LTF to mark CISD levels, while monitoring HTF bias, while checking for kill zone timing, is a significant cognitive load.
SMC X automates the scan. It detects sweeps, marks CISD entry levels when they print, and gives you HTF/LTF alignment at a glance — so the concepts in this glossary become visible on your chart the moment they occur, not after you have spent ten minutes scanning manually and missed the entry window.
Frequently Asked Questions
What does CISD mean in ICT trading?
CISD stands for Change in State of Delivery. It is the entry confirmation signal in ICT methodology — the specific lower timeframe structural break that confirms price has shifted from one delivery mode to another after a liquidity sweep. It is the final step in the sweep-displacement sequence and the highest-probability entry point in the SMC framework.
What is the difference between CHoCH, BOS, and MSS in ICT?
BOS (Break of Structure) is a trend continuation signal — price breaks a swing in the direction of trend. CHoCH (Change of Character) is the first internal swing break against the trend — an early reversal warning. MSS (Market Structure Shift) is a stronger reversal signal — a significant structural break against the trend, usually following a liquidity sweep. CISD is the entry confirmation that follows MSS.
What is a PD Array in ICT trading?
PD Array stands for Premium and Discount Array. It refers to the collection of institutional price delivery zones — order blocks, fair value gaps, breaker blocks, liquidity voids, and similar structures — that act as areas of interest for entries. PD Arrays are arranged from premium (above equilibrium) to discount (below equilibrium) based on the current range.
What is OTE in ICT trading?
OTE stands for Optimal Trade Entry. In ICT, OTE refers to the 62–79% Fibonacci retracement zone of a displacement move — the area where price is most likely to retrace before continuing. A bullish OTE is the 62–79% retracement of an upward swing; a bearish OTE is the 62–79% retracement of a downward swing. OTE is a location tool, not an entry signal by itself.
What are kill zones in ICT trading?
Kill zones are the specific time windows during the trading day when institutional order flow is highest and the most reliable ICT setups occur. The main kill zones are: London Open (2–5 AM EST), New York Open (7–10 AM EST), New York Lunch (12–1 PM EST), and New York Close (3–4 PM EST). Trading during kill zones aligns your entries with the periods of maximum institutional activity.
What does SMC X auto-mark on TradingView?
SMC X auto-marks CISD entry signals, sweep detection, and HTF/LTF alignment on your TradingView chart. It identifies the key concepts in this glossary — sweeps, displacement, structural shifts — and prints the CISD entry level automatically so you see the confirmation signal the moment it forms, without manual multi-timeframe scanning.
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