Aroon Oscillator

Aroon in one line.

What it measures

The difference between Aroon Up and Aroon Down for the same window.

How traders read it

Above zero, recent highs are fresher than recent lows; below zero the reverse. Values near ±100 read as a strong trend, values near zero as no clear trend.

Formula

Aroon Oscillator = Aroon Up − Aroon Down

Settings and output

Call: aroonOscillator(periods)

Setting	Chart default
`periods`: Periods	25

What you get: a number.

Warm-up: with aroonOscillator(25), it asks for 26 bars of history and a run-up of 1, and its first value came on bar 27 of the example data.

Chart

Aroon Oscillator drawn by its own code on example prices

The prices are made up, hourly, and the same on every page, so the chart shows how the indicator behaves, not how a market behaved.

In an algorithm

function onIntervalClose() {
  if (aroonOscillator(25) > 50 && OPEN_POSITIONS_COUNT === 0) {
    openPosition("BUY", { quantity: 10000, stopLossPips: 30 });
  }
}

Aroon
Indicator catalogue