The Misunderstanding of Market Imbalances
As Smart Money Concepts (SMC) have permeated the retail trading space, certain terms have been hijacked and severely oversimplified. The most prominent victim of this oversimplification is the 'Fair Value Gap' (FVG). To the average retail SMC trader, any large candle on the chart is instantly labeled an FVG, and they blindly place limit orders hoping for a magical bounce. However, the Interbank Price Delivery Algorithm (IPDA) is infinitely more nuanced than a simple three-candle pattern. To trade with institutional accuracy, you must understand the deep architectural difference between a standard Fair Value Gap and its far more aggressive cousin: the Liquidity Void.
Both of these phenomena represent a state of algorithmic inefficiency—a moment where price moved so rapidly in one direction that the opposing side of the market was completely denied the opportunity to participate. The algorithm abhors inefficiency and will mathematically seek to repair it. But how it repairs it depends entirely on whether it is an FVG or a Void.
The Structure of a Fair Value Gap (FVG)
A Fair Value Gap is a strict, three-candle sequence. Let’s examine a Bullish FVG (also known as a BISI: Buyside Imbalance, Sellside Inefficiency). Candle 1 goes up. Candle 2 is a massive, energetic expansion upward. Candle 3 opens and continues upward. The FVG is the literal gap, or empty space, between the high of Candle 1's wick and the low of Candle 3's wick. In this specific space, only buyers were present; there were zero sellers.
Because the algorithm requires a balanced ledger, it will eventually retrace back down into this gap to offer sell-side liquidity, thus "balancing the books." Professional digital mercenaries do not just buy anywhere in the gap. They look at the Consequent Encroachment (CE), which is the exact 50% mathematical midpoint of the FVG. The algorithm highly respects this 50% level. If the structural narrative is truly bullish, price should tap the open of the FVG or the 50% CE and immediately displace higher. It should not close a full candlestick body below the 50% mark.
The Chaos of the Liquidity Void
A Liquidity Void, on the other hand, is an FVG on absolute steroids. It is not just a three-candle pattern; it is a massive, sudden, and often violent drop or spike in price that spans multiple heavy candles with absolutely no overlapping wicks. Voids are almost exclusively created during extreme macro-economic news events like Non-Farm Payrolls (NFP), Consumer Price Index (CPI), or sudden geopolitical black swan events.
During a Void, liquidity is completely pulled from the market by tier-1 banks. The price literally teleports from one level to another. The chart looks like a sheer cliff face. While an FVG represents a controlled institutional imbalance, a Void represents absolute market panic and illiquidity.
Execution Strategy: Mitigation vs. Complete Fill
The fatal error retail traders make is trying to trade a Liquidity Void exactly like an FVG. If you see a massive 150-pip Liquidity Void downward, and you try to catch a falling knife by placing a buy limit order at the 50% mark, you will likely be annihilated. The momentum is too heavy, and the void is too large.
The Algorithmic Rule: Fair Value Gaps are designed for mitigation. You trade the bounce off them. Liquidity Voids are designed for complete fills. You do not trade the bounce; you trade the journey back through the void.
When the market eventually calms down after a news event that created a massive downward Void, the algorithm will slowly and systematically begin to climb back up to fill that empty space. It acts like a vacuum. Your job is not to guess where the bottom of the void is. Your job is to wait for the market to establish a clear bottom (a Smart Money Reversal), and then execute long positions with the specific Take Profit target being the complete closure (full fill) of the Liquidity Void above. Understand the architecture, differentiate the inefficiencies, and stop treating every large candle as a buy signal.