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Opening: Do Not Only Stare At The Close

Most traders love the close price. It feels clean, final, and easy to read. But the market is not always that polite. Sometimes the real story is hidden in the highs and lows: did buyers keep making new highs, or did sellers keep forcing new lows? The DeMarker Indicator, often called DeM, is built around that exact question.

In plain language, DeMarker does not only ask whether price went up or down. It asks whether the market still has the strength to make stronger highs or weaker lows. That makes it useful for spotting exhaustion, reversal risk, and momentum shifts before the chart becomes obvious to everyone.

History: Tom DeMark And Market Exhaustion

The DeMarker Indicator was developed by market technician Tom DeMark. DeMark’s work is famous for focusing on market exhaustion, timing, and the idea that trends often weaken internally before price fully reverses.

Unlike RSI, which mainly compares closing price gains and losses, DeMarker compares current highs and lows with previous highs and lows. This makes it especially useful in markets where wicks, breakout attempts, and failed pushes matter.

Formula: New Highs Versus New Lows

The standard DeMarker calculation uses two components: DeMax and DeMin.

  • If Current High > Previous High: DeMax = Current High – Previous High / Otherwise:DeMax = 0
  • If Current Low < Previous Low: DeMin = Previous Low – Current Low /Otherwise:DeMin = 0

Then the indicator is calculated as: DeMarker = SMA(DeMax, N) / [SMA(DeMax, N) + SMA(DeMin, N)]

Most platforms display DeMarker between 0 and 1. Some may scale it between 0 and 100. The common default period is 14.

How To Read It

The most common interpretation is simple:

  • Above 0.70 = overbought zone
  • Below 0.30 = oversold zone
  • Around 0.50 = balanced pressure

But this is where many beginners get trapped. Overbought does not automatically mean sell. Oversold does not automatically mean buy. In a strong uptrend, DeMarker can stay high for a long time. In a strong downtrend, it can stay low for longer than your patience.

A better reading is this: when DeMarker rises above 0.70, buyers may be pushing the market hard enough to create exhaustion risk. When DeMarker falls below 0.30, sellers may be pushing too aggressively, creating rebound risk. The signal becomes stronger when price reaches support, resistance, trendline zones, or previous liquidity areas.

Practical Long Setup

A practical long setup should look for oversold pressure plus price confirmation.

1. DeMarker falls below 0.30.

2. Price reaches a support zone or previous demand area.

3. DeMarker turns upward and moves back above 0.30.

4. Price forms a higher low or breaks a short-term resistance.

5. Stop-loss is placed below the recent swing low.


For example, if ETH drops into a daily support zone and DeMarker is below 0.30, the market may be stretched. But the entry becomes more reasonable only after price stops making lower lows and DeMarker starts recovering. That is the difference between buying weakness and catching a falling market too early.

Practical Short Setup

A practical short setup looks for overbought pressure plus rejection.

1. DeMarker rises above 0.70.

2. Price reaches resistance or a previous supply zone.

3. DeMarker turns downward and falls back below 0.70.

4. Price fails to hold a breakout or forms a lower high.

5. Stop-loss is placed above the recent swing high.


If BTC breaks above resistance but DeMarker quickly drops back from the overbought zone, the breakout may be losing strength. If volume also fades, the setup becomes more suspicious. This is where traders should slow down instead of pressing the buy button like it owes them money.

Divergence: The Real Useful Part

Divergence is one of the strongest uses of DeMarker. A bearish divergence happens when price makes a higher high, but DeMarker makes a lower high. This suggests buyers are still pushing price upward, but each push has less strength.

A bullish divergence happens when price makes a lower low, but DeMarker makes a higher low. This suggests sellers are still pressing price lower, but downside pressure is weakening.

For crypto trading, divergence becomes more valuable after liquidation events, failed breakouts, or moves into major support and resistance. Random divergence in the middle of a messy range is less useful.

Parameter Selection

The default 14-period setting is a reasonable starting point. It balances sensitivity and stability. Shorter settings, such as 7 or 10, react faster but create more false signals. Longer settings, such as 21 or 30, react slower but filter more noise.

For short-term crypto trading, a faster setting can help detect intraday exhaustion. For swing trading, 14 or 21 is usually cleaner. For daily or weekly charts, DeMarker is better used as a market condition tool rather than a precise entry trigger.

Best Combinations

DeMarker works well with moving averages. Use EMA 50 or EMA 200 to define the main trend. In an uptrend, oversold DeMarker signals are often better for buying pullbacks. In a downtrend, overbought DeMarker signals are often better for selling rebounds.

It also works well with support and resistance. Overbought readings near resistance matter more than overbought readings in the middle of a trend. Oversold readings near support matter more than oversold readings in empty chart space.

Volume can add one more layer. If price breaks out, DeMarker is strong, and volume expands, the breakout has better quality. If price breaks out but DeMarker weakens and volume fades, the move may be a trap.

Common Mistakes

  • The first mistake is shorting every move above 0.70. Strong markets can remain overbought. Always wait for rejection, divergence, or a break in structure.
  • The second mistake is buying every move below 0.30. Weak markets can remain oversold. Wait for price to stop making lower lows or reclaim a key level.
  • The third mistake is ignoring timeframe alignment. A five-minute oversold signal against a strong daily downtrend may only create a small bounce. The bigger timeframe usually has the louder voice.

Key Takeaways

DeMarker measures the strength of new-high attempts versus new-low attempts. It is a bounded oscillator, commonly displayed from 0 to 1, with 0.70 and 0.30 used as classic overbought and oversold reference levels.

The best way to use it is not to trade every threshold touch. Use it to detect exhaustion, confirm reversals, and identify divergence near important price zones. In crypto markets, where wicks and failed breakouts are common, DeMarker can be a practical tool for reading whether the market still has real pushing power.

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