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Download APKThe Elder Ray Index was created by renowned trading psychologist and technical analyst Dr. Alexander Elder in the 1980s and featured in his classic trading book Trading for a Living, forming a core part of his "Triple Screen" trading system. The design philosophy behind Elder Ray is genuinely insightful: it breaks down every candle into a contest between bulls and bears, quantifying each side's strength with two separate histogram lines called Bull Power and Bear Power. Unlike most indicators that focus only on closing price or a single moving average crossover, Elder Ray simultaneously examines the high, the low, and their relationship to an exponential moving average (EMA), revealing the "maximum attacking capability" of both bulls and bears within the market.
In Binance Futures trading (BTCUSDT, ETHUSDT, SOLUSDT perpetuals), Elder Ray is particularly useful for judging whether the current trend remains healthy, whether the balance of power between bulls and bears is quietly shifting, and for spotting potential top or bottom divergence signals. Its histogram format is intuitive and easy to read, and when paired with EMA13, it lets traders instantly assess "whether bulls still have the strength to push price higher" or "whether bears have run out of ammunition to push price lower" without decoding complex formulas. This guide covers the formula, chart setup, trend confirmation, divergence signals, zero-line crossovers, combining with price action, entry/exit rules, risk management, comparison with MACD/RSI, common mistakes, and real trading cases - everything you need to master Elder Ray on Binance Futures.
Elder Ray is calculated using a 13-period exponential moving average (EMA13). The formulas are simple:
Bull Power = Candle High − EMA13
Bear Power = Candle Low − EMA13
Bull Power measures how far the bulls can push price above the EMA within that candle, reflecting the bulls' "maximum attacking capability." Bear Power measures how far the bears can push price below the EMA, reflecting the bears' "maximum attacking capability." In a strong uptrend, Bull Power is typically positive and large, showing bulls firmly dominate; Bear Power usually remains negative (since the low tends to sit below EMA13), but its absolute value keeps shrinking, showing bears' resistance is weakening. In a downtrend, the opposite applies: Bear Power stays negative and large, while Bull Power's absolute value keeps shrinking, potentially turning negative.
The key to understanding these two lines: they are not simply price minus the moving average, but the candle's extreme (high or low) minus the moving average, which makes Elder Ray far more sensitive than a simple close-vs-EMA comparison at reflecting the true extreme strength of the bull/bear contest within each candle - especially useful for catching momentum exhaustion and early reversal signs.
First visit the Binance official site and register using referral code BIANAPP. Complete identity verification, transfer USDT from your spot wallet to your futures wallet, then open the BTCUSDT perpetual chart. Mobile users can download the official Binance APK and install it directly on Android.
Click the Indicators button above the chart and search for Elder's Bull Bear Power (sometimes labeled Elder Ray or Bull Bear Power). Add it, and it will display as a histogram in a separate panel below the price chart, with two colored sets of bars representing Bull Power and Bear Power.
Click the indicator's settings icon and confirm the EMA period is set to the default 13. Scalpers can try 8-10 periods for more sensitivity; long-term trend traders can use 21 periods for smoother signals. Shorter periods react faster but generate more false signals; longer periods are smoother but lag more.
It's recommended to also plot an EMA13 line on the main price chart using the same period as your Bull Power/Bear Power settings, so you can directly see price's position relative to the moving average alongside the power values for more accurate judgment.
The classic use case for Elder Ray is combining it with EMA13 to judge trend health:
In practice, traders typically use the daily or 4H chart to establish EMA13 direction as a higher-timeframe filter, then use Elder Ray on a lower timeframe (like 1H) only when direction aligns, to find pullback-end entry points where momentum resumes. This is the core idea behind Alexander Elder's "Triple Screen" system - higher timeframe sets direction, lower timeframe finds entries.
Divergence is one of Elder Ray's most predictive signal types, split into bearish and bullish divergence:
Price makes a new high, but Bull Power fails to make a corresponding new high (instead reading lower than at the prior high), indicating that while price is nominally still rising, the bulls' "maximum attacking capability" is actually weakening - an early warning of upward momentum exhaustion that often precedes an actual price reversal.
Price makes a new low, but Bear Power fails to make a corresponding new low (its absolute value smaller than at the prior low), indicating the bears' "maximum attacking capability" is weakening and the market may be nearing a bounce or reversal - a classic bottoming warning signal.
Divergence signals should not be used alone as entry triggers, but rather as prompts to "raise vigilance and prepare to exit or reverse." Confirm with price structure (such as a break of key support/resistance), volume changes, or candlestick patterns before acting, avoiding blind "bottom fishing" or "top picking."
Where Bull Power and Bear Power sit relative to the zero line also provides important momentum confirmation:
Elder Ray used alone can generate noisy signals in choppy markets; combining it with price action significantly improves win rate:
When a clear divergence forms against your position (bearish divergence while holding longs / bullish divergence while holding shorts), consider taking partial profits. When Bull Power or Bear Power crosses the zero line against your position direction, treat it as a strong signal of a potential trend reversal and exit or reverse promptly. Always stick to a preset 1:2 to 1:3 reward-to-risk target rather than holding emotionally.
Risk only 1-2% of account equity per trade. Leverage guidelines: beginners 1-3x, experienced traders 3-5x, professional short-term traders no more than 10x. Higher leverage in futures trading means greater liquidation risk, so always combine it with position sizing to control per-trade loss.
Structural stop: Place the stop beyond the most recent swing high/low, the most robust method. ATR stop: Use 1.5-2x ATR as a dynamic stop distance that adapts to changing volatility. Momentum reversal stop: Exit proactively when Bull Power/Bear Power crosses the zero line against your position, even before price hits your hard stop.
Use scaled entries and scaled profit-taking rather than going all-in on a single trade. Use around 50% of planned position size on the initial entry, adding the remainder only after trend continuation is confirmed. Always set a clear stop loss for every trade and avoid the "it will bounce back" mentality.
The table below compares Elder Ray, MACD, and RSI across their calculation basis, signal types, strengths, and limitations, helping traders choose the right combination of tools for their trading style:
| Dimension | Elder Ray | MACD | RSI |
|---|---|---|---|
| Calculation basis | High/Low minus EMA13 | Difference between two EMAs and its smoothing line | Ratio of gains to losses over a period |
| Core purpose | Measure the extreme attacking power of bulls and bears | Judge momentum change and moving-average crossovers | Judge overbought/oversold conditions and divergence |
| Signal types | Power divergence, zero-line crossover, trend health | Bullish/bearish crossovers, histogram divergence | Overbought/oversold thresholds, divergence |
| Response speed | Faster, highly sensitive due to using candle extremes | Moderate, smoothed by dual EMAs so slightly slower | Moderate, heavily influenced by period setting |
| Choppy market behavior | More signals, needs price-action filtering | Frequent crossovers producing more false signals | Oscillates repeatedly within 30-70, less useful |
| Best use case | Finding pullback-end entries, momentum exhaustion warnings | Confirming trend establishment and momentum direction | Reversals at overbought/oversold zones, catching divergence |
| Direction distinction | Yes (separate Bull/Bear power lines) | No (single momentum histogram) | No (single strength indicator) |
These three indicators are not mutually exclusive but complementary: use MACD to confirm the higher-timeframe trend and its momentum direction, use Elder Ray inside that trend to pinpoint pullback-end entries where momentum resumes, and use RSI to gauge short-term overbought/oversold levels and catch divergence. Triple confirmation significantly improves signal reliability.
On the BTC 4H chart, price was in a healthy uptrend above EMA13, pulled back to near EMA13, and Bear Power's absolute value shrank from -320 to -80 while a strong bullish candle formed on rising volume. Entered long at 64,200, stop at 62,800 (risk 1,400), targeting 68,400 at 1:3 R:R. Three days later price rallied to the target with Bull Power staying positive throughout and no bearish divergence appearing.
On the ETH daily chart, price made two consecutive new highs (3,180 → 3,320), but Bull Power's reading at the second high was clearly lower than at the first, forming classic bearish divergence. Price then broke below key support with a bearish engulfing pattern. Entered short at 3,260, stop at 3,340 (risk 80), targeting 3,020 (1:3 R:R). Price continued falling to hit the target.
On the SOL 1H chart, price made a new low (142 → 138), but Bear Power's absolute value shrank from -6.2 to -3.1, forming bullish divergence, then Bull Power turned from negative to positive within the following candles, crossing above zero. Entered long at 139, stop at 136 (risk 3), targeting 148 (1:3 R:R). Price rallied to hit the target.
Q: What is the best EMA period for the Elder Ray Index? The default 13-period EMA works best for 1H-4H swing trading. Scalpers can try 8-10 periods for more sensitivity, while long-term trend traders can use 21 periods for smoother signals. Shorter periods react faster but produce more false signals; longer periods lag more.
Q: How is Elder Ray different from MACD? Elder Ray directly measures the extreme strength of bulls and bears relative to an EMA, showing both sides' absolute power simultaneously. MACD is the difference between two moving averages and its smoothing line, mainly reflecting momentum changes and crossovers without distinguishing which side controls the extremes. Using both together provides mutual confirmation.
Q: Does a negative Bull Power mean I should short? Not necessarily. In a healthy uptrend, Bear Power can also be briefly negative before recovering, which is a normal pullback. A genuine reversal signal is when Bull Power keeps declining and breaks below a prior low while price also breaks below EMA13 support - multiple conditions aligning make the signal more reliable.
Q: How do I spot divergence with Elder Ray? When price makes a new high but Bull Power fails to make a corresponding new high, that's bearish divergence, signaling weakening upward momentum. When price makes a new low but Bear Power fails to make a corresponding new low (smaller absolute value), that's bullish divergence, signaling weakening downward momentum. Confirm with price structure before entering.
Q: Which pairs and timeframes suit Elder Ray best? High-liquidity perpetuals like BTCUSDT, ETHUSDT, and SOLUSDT trend more cleanly, giving clearer Elder Ray signals. Low-liquidity altcoins whipsaw and generate more false signals. The 1H-4H timeframes suit swing trading best, while the daily chart works well for longer-term trend judgment.
Q: Who invented the Elder Ray Index? The Elder Ray Index was created by renowned trading psychologist and technical analyst Dr. Alexander Elder in the 1980s, featured in his classic book Trading for a Living, and forms a key part of his Triple Screen trading system.
Q: Can Elder Ray be used alone? It's not recommended. Elder Ray tends to produce noisy signals in choppy markets, so it's best combined with the higher-timeframe trend direction, key support/resistance levels, volume, and other momentum indicators (like MACD/RSI) for confirmation before making trading decisions.
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