PD arrays in one paragraph
PD stands for premium and discount. In ICT teaching, a PD array is a price zone or reference point, such as an order block or a fair value gap, that a trader uses to judge where price may react. It is always read in relation to a dealing range, and the key question is whether price is trading in the premium half or the discount half of that range.
Premium and discount
Take a dealing range: the distance between a significant swing high and swing low. The midpoint is equilibrium. Price above the midpoint is in premium; price below it is in discount. The core idea is that traders looking to buy prefer to do so from discount, and traders looking to sell prefer premium, rather than buying expensive or selling cheap. See Dealing Range and Premium/Discount Array for the details.
Examples of PD arrays
These concepts are commonly treated as PD arrays or are used alongside them:
- Order Block: A candle or price range associated with the origin of a meaningful displacement move that breaks structure or changes delivery.
- Breaker Block: A failed order block that is later approached from the opposite side and may act as a support/resistance reference.
- Mitigation Block: A price-action reference associated with a prior swing/failed push where price returns to mitigate opposing orders before continuing; definitions vary by ICT lesson.
- Rejection Block: A price zone associated with a pronounced rejection wick at a swing extreme, often used to identify where price rejected higher/lower prices.
- Fair Value Gap: A three-candle price inefficiency where the first and third candles do not overlap across a price interval, often created by displacement.
- Liquidity Void: A relatively rapid price movement through a broad area with little two-way trading or limited candle overlap.
- Propulsion Block: A specialized block concept used to describe a price area involved in a strong continuation or propulsion move; exact rules are lesson-dependent.
How this site uses the term
This site uses "ICT PD Arrays" as shorthand for its whole glossary. Strictly speaking, not every concept here is a PD array: liquidity levels, market structure terms, models and kill zones are supporting concepts that tell you why and when to watch a zone. Browse them by category from the concepts page.
Limits to keep in mind
A PD array is an analytical estimate, not a guarantee. Price can ignore a zone, trade through it or react from a different one. ICT traders combine zones with structure, liquidity and time, and manage risk on every trade. Nothing here is financial advice.
ICT PD Arrays is an independent educational project and is not affiliated with or endorsed by Michael J. Huddleston. This page is not financial advice, and trading carries risk. Read the full disclaimer.