Fair Value Gap vs Mitigation Block
A fair value gap is three bars whose outer two do not overlap, which is a geometric test anyone can apply. A mitigation block is an area price returns to where earlier positions are assumed to be closed out, which is a claim about behaviour rather than about shape.
One is named for a shape. The other is named for a motive. That difference decides how much of each you can actually verify on your own chart.
What each one is
A fair value gap is three bars whose outer two do not overlap. It is a geometric test — the bars either satisfy it or they do not. Fair value gap covers the rule.
A mitigation block is an area price returns to where earlier positions are assumed to be closed, so the name describes what somebody is presumed to be doing rather than what the bars look like. Mitigation block covers the usage.
One can be measured and the other has to be believed. That is not a dismissal — the reasoning may be correct — but it does change what you can test.
Where they differ
Whether the definition is about the chart. The gap’s is entirely about bar geometry. The mitigation block’s is about intent, which no chart displays.
How much the sources agree. The three-bar rule is stated the same way almost everywhere. Mitigation block definitions differ noticeably between the few places that use the term.
When it can be marked. The gap as soon as three bars close. The mitigation block once price has returned, which is later and is a form of hindsight.
How it overlaps with what you already have. A mitigation block frequently coincides with an order block, and the difference between them is which story is being told about the same candles.
Where they agree
Both are locations, not signals. Price arriving is where the decision begins, and neither concept supplies what the decision should be.
Both make an argument about orders you cannot see. An untraded band and closed-out positions are both inferences, and neither is observable in a price feed.
Both are frequently ignored. On this site’s shared series direction runs average 2.01 bars with a longest of 11, and marked areas are passed through constantly.
And neither supplies a stop. The ninetieth percentile bar range here is 1.101 and the largest single bar was 2.338, which is what an invalidation nearby has to survive.
Which one to use
Use the fair value gap. It has one stated rule, universal agreement on that rule, and a record somebody else could audit — which is the whole basis for improving at anything.
Use the mitigation block only with your own written definition. Which candles, after what move, and what makes the return count — those three sentences are the whole difference between a method and a label.
Use the order block instead if you want that family. It is far better documented and has an actual candle rule, so at least the disagreements are about parameters rather than about meaning.
And when the only argument for an area is a story about other traders, prefer the shape. The story may be right; you still cannot check it, and what you cannot check you cannot improve.
Why an unverifiable premise is a problem
Because it cannot be wrong. If the reason an area matters is invisible, no outcome can disconfirm it, and an idea that survives every result is not telling you anything.
And because it makes review impossible. With no stated rule, next month you will not be able to say why this area qualified and another did not.
What a usable definition needs
Which candles form the area. The last opposing one, the whole consolidation, or the body only. Pick one and write it down before the next chart.
After what size of move. On this site’s shared series the median bar range is 0.493 and the ninetieth percentile is 1.101, which is the scale that sentence works in.
What counts as a return. A touch, a wick into it, or a close inside — three different rules with three different trade counts.
And what invalidates it. A close through, or a distance beyond. That sentence is what lets a position be sized at all, and without it the area is decoration.
The original data
Of the 24,971 unique videos in research/search-study-corpus.jsonl, no title compares these two
directly — this pair is constructed from two subjects the corpus covers separately. Separately, fair
value gaps appear in 150 titles at a median of 28,170 across 108 channels, and mitigation blocks in 42
at a median of 5,027 across 37. The counts come from site/corpus_count.py.
150 videos on the measurable one at 28,170 against 42 on the inferred one at 5,027. Three and a half times the coverage and more than five times the audience per video — the idea with a checkable rule is both better taught and better watched, which is not the usual pattern in this vocabulary.
The answer to the question on that chart is that nothing on it can tell you. Whether positions are being closed there is not visible in a price feed — so if that is the reason you are trading the area, you are trading an assumption.
When it fails
The failure is naming an area after a motive and then treating the name as evidence, and every chart supports it. Price returns to an old area and reacts, so the area is called a mitigation block and the concept is confirmed. Price returns to a different old area and continues, and that one is simply not called anything. The label is applied to the cases that worked, so the pattern appears reliable while nothing has been counted — and no rule existed that could have marked the failures in advance.
The second failure is loosening the three-bar rule. Every fast move qualifies.
A third is no written return definition. A touch and a close differ.
A fourth is no expiry. Old areas accumulate forever.
A fifth is expecting a reaction on every visit. Most are passed through.
And a sixth is trading a band smaller than the round trip. The cost exceeds the target.
Related
Fair value gap covers the measurable three-bar band. Mitigation block covers the inferred area. And order block is the better documented member of the same family.
Anything named for what other traders are supposedly doing should make you cautious. The gap is named for a shape you can measure. The mitigation block is named for a motive you are inferring, and motives do not show up on a price chart.
— Michael Whitman
This page is educational, not financial advice. Test every idea on your own charts before risking money.