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Lesson 1 of 17 · 5 min read

Market regimes and volatility

Why the same strategy works one time and fails the next, how to tell a trend from a range and how to measure volatility with ATR.

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In this lesson

  • understand what a market regime is and why it matters
  • learn to measure volatility with ATR
  • find out how volatility changes position size and the stop-loss

A strategy that works beautifully for a few months suddenly starts losing. The trader looks for a mistake in the rules – while it was the market that changed. A strong trend turned into a range, calm turned into a storm. This is called a market regime, and advanced trading starts with being able to recognise it.

Two axes: direction and volatility#

Put simply, a market can be described by two questions:

  • Does it have a direction? A trend (higher highs and lows, or lower), or a range with no clear direction.
  • How much does it move? Calm with small daily moves, or a storm with big ones.

That gives four regimes – a calm trend, a wild trend, a calm range and a wild range. Each favours a different type of strategy. A trend-following strategy bleeds on false signals in a range; a strategy betting on a return to the middle of a range loses in a strong trend on "cheap" purchases that keep getting cheaper.

calm trendwild trendcalm rangewild rangeRange, storms in places.
Before you go out, check the weather. Before you open a trade, check the market regime.

ATR: how much the price usually moves#

Volatility is measured by ATR (Average True Range). For each day it takes the range between the high and the low (also counting any gap from the previous close) and averages the last 14 days. The result says how much the price usually moves in a day.

ATR is most useful as a percentage of the price – then you can compare a calm and a wild market at any price level. For Bitcoin, the median daily ATR was around 6% in 2021, around 3% in 2023 and below 3% in 2025.

  • ATR 14 – average range as % of price (panel below the chart)
Same market, different volatility: ATR swings roughly between 2.5 and 7% of the price a day.
  • Panic: Aug 5, 2024
  • ATR 6.4%: Mar 10, 2025
BTC/USDT · 1D · Data: Binance Vision · CC BY-NC-SA 4.0

On the chart you can see volatility take turns: around 6% in April 2024, around 3% in summer, a jump to 5.8% in the August panic, 2.8% in October and in March 2025 another peak – 6.4%, as high as in March 2024.

What it means for a trade#

When ATR is 2%, a stop-loss 3% below the entry gives the price a little room. When ATR is 6%, the same stop-loss throws you out on an ordinary daily move. That is why advanced traders:

  • set the stop-loss by volatility – for example 1.5 to 2 ATR from the entry (more in module 2),
  • shrink the position when volatility rises – so the risk in money stays the same,
  • adjust expectations – there are no quick big profits in a calm market, and no calm nerves in a wild one.

You only recognise a regime in hindsight

Exactly when a trend ended and a range began only becomes clear a few weeks later. That is why a strategy does not rely on regimes as a certainty – it only adjusts position sizes and expectations to them.

Common myths#

  • "The strategy stopped working, I have to redo it." Maybe the regime just changed.
  • "My stop-loss is always 3%." In a calm market that is too much, in a wild one too little.
  • "High volatility = more opportunities." And just as many quick losses.

Summary

  • Market regime = direction (trend or range) and volatility (calm or storm).
  • Each regime favours a different type of strategy.
  • ATR as a percentage of the price shows how much the price usually moves in a day.
  • The stop-loss and position size are adjusted to volatility; you only recognise a regime reliably in hindsight.