TL;DRThe price range where approximately 70% of trading volume occurred during a given period. It represents the market's accepted fair-value zone. Price opening outside the value area often migrates back inside.
The value area is the price range containing approximately 70% of trading volume (or time, in traditional Market Profile) during a defined period. The top of this range is the Value Area High (VAH). The bottom is the Value Area Low (VAL).
The value area represents the range of prices that the market accepted as fair. Prices inside the value area attracted sustained two-sided trading. Prices outside the value area were rejected as too high or too low.
The value area's most powerful application is as a reference for the next session's open. Where today's price opens relative to yesterday's value area sets up specific trading scenarios.
Opening inside yesterday's value area suggests balance. Price is likely to remain within the range unless a catalyst shifts sentiment.
Opening above the value area suggests buyers are in control. If price can't re-enter the value area (drop below VAH), it may continue higher to find a new value area.
Opening below the value area suggests sellers are in control. If price can't re-enter (rise above VAL), it may continue lower.
The rule of thumb: if price opens outside the value area and quickly re-enters, the breakout has failed and price will likely migrate to the POC.
Looking at the value area across multiple days reveals the bigger picture. Value areas that are stacking higher day after day indicate an uptrend. Price is finding acceptance at progressively higher levels.
Overlapping value areas day after day indicate balance or consolidation. The market is accepting the same range repeatedly.
Value areas that shift sharply overnight suggest a gap in acceptance. The space between yesterday's VAH and today's VAL (or vice versa) is a low-volume zone that price may return to fill.
Open above value area
Yesterday's ES value area was 5,190-5,210. Today opens at 5,218, above the VAH.
Buyers are in control. If ES stays above 5,210 (VAH) for the first 30 minutes, the breakout is likely real and price may trend higher to establish a new value area. If ES drops back below 5,210 quickly, the breakout failed and price targets the POC at 5,200.
Value area migration
ES opens at 5,188, inside yesterday's value area (5,190-5,210). The POC is at 5,202.
Opening inside value suggests a balanced day. Price is likely to rotate within the 5,190-5,210 range, with the POC at 5,202 acting as a magnet. Mean-reversion strategies work best in this scenario.
Treating the value area as exact support and resistance
The value area is a zone, not a line. VAH and VAL are approximate levels. Price can overshoot by a few ticks. Use them as reference areas, not exact triggers.
Ignoring the relationship between today's open and yesterday's value area
Where you open relative to the prior session's value area is one of the single most important daily data points. Check this before every trading day.
Only using one day's value area
Multi-day value area analysis shows trend, balance, and key gaps. A level where multiple days' value areas overlap is a much stronger reference than a single day.