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2 min readTapeboard Staff

What is a Trading Range? Definition, Measurement, and Example

A trading range is the horizontal band between established support and resistance within which a security oscillates when neither buyers nor sellers control the trend.

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What is a Trading Range?

A trading range is the horizontal price band bounded by a defined support floor and resistance ceiling within which a security trades when supply and demand are balanced. Inside the range there is no trend: rallies fail at the ceiling, declines stall at the floor, and mean-reverting strategies outperform momentum strategies. Ranges end with a breakout or breakdown, and the duration and height of the range calibrate the size of the eventual move.

How to Measure and Trade the Range

Definitions and metrics:

  • Range boundaries: minimum two touches of support and two of resistance; three or more touches make the levels tradable with high reliability.
  • Range height: resistance − support, expressed in dollars and as a percentage of price. A stock oscillating between $48 and $52 has a $4, or 8%, range.
  • Range position: (price − support) ÷ (resistance − support). A reading of 0.9 means price is 90% of the way to the ceiling — poor location for new longs.
  • Volume signature: volume should decline as the range matures and expand decisively on the breakout. Rising volume at the ceiling without a break is distribution.

Standard range trade: buy near support with a stop below the floor, target the ceiling; reverse at the top for short sellers. Measured-move target on breakout: breakout level + range height.

Worked Example

For most of 2022–2023, XOM traded in a wide range between roughly $98 support and $120 resistance as oil prices stabilized. The $22 range height implied a measured target near $142 on an upside break — a level the stock never reached, because the range instead resolved sideways into a new, tighter band. A cleaner example: GOOGL spent September 2023 through January 2024 ranging between $125 and $142. The January 2024 breakout above $142 on heavy volume projected $159; the stock hit $160 within eight weeks.

When Traders Use It

  • Mean-reversion systems: fade moves toward the boundaries; RSI(2) and Bollinger Band touch strategies are built explicitly for range regimes.
  • Options income: short iron condors and strangles profit while price stays inside the range; the boundaries define strike placement.
  • Breakout preparation: long ranges produce the largest trends — "the bigger the base, the higher the space." Position traders accumulate inside the range anticipating the break.
  • Regime detection: quants classify markets as trending or ranging (e.g., via ADX below 20) and switch strategy sets accordingly.

Limitations and Common Misconceptions

  • Ranges are only obvious in hindsight. The third touch that "confirms" the ceiling can instead be the breakout; every range trade carries that risk.
  • Boundary touches degrade the level. Each test consumes resting orders; late touches break through more easily.
  • False breaks are structural, not bad luck — stop hunts deliberately push price beyond the boundary before reversing.
  • Range strategies die in trends. Fading strength works until it catastrophically doesn't; position sizing must assume the range eventually ends against an open fade.