Below is how EMA10, EMA21, SMA50, SMA100, SMA200 are correlated with each other on XAU/USD, and how pros actually use that correlation.

🧠 First, the core idea (important)

Moving averages are not independent.
They’re a stacked system, where faster MAs lead and slower MAs confirm.

Think of them as:

• EMA10 / EMA21 → velocity

• SMA50 / SMA100 → trend health

• SMA200 → regime

🔗 PAIRWISE CORRELATION (Practical, not statistical)

EMA10 ↔ EMA21

• Correlation: ⭐⭐⭐⭐⭐ (very high)

• Almost always move together

• EMA10 crossing EMA21 = momentum shift

👉 In XAUUSD, this often leads price by 1–3 candles

EMA21 ↔ SMA50

• Correlation: ⭐⭐⭐⭐½

• This is the most important relationship for entries

Rule

• EMA21 above SMA50 → bullish continuation

• EMA21 below SMA50 → bearish continuation

SMA50 ↔ SMA100

• Correlation: ⭐⭐⭐⭐

• Defines trend strength vs correction

Rule

• SMA50 above SMA100 → healthy trend

• SMA50 chopping SMA100 → range / distribution

SMA100 ↔ SMA200

• Correlation: ⭐⭐⭐⭐½

• Defines macro bias

Rule

• Price + SMA100 above SMA200 → long-only environment

• Below SMA200 → rallies get sold

Bullish Stack (High-probability XAUUSD longs)

Price
EMA10
EMA21
SMA50
SMA100
SMA200

• Correlation: perfect positive

• Pullbacks usually stop at EMA21 or SMA50

• This is where gold trends hard

Bearish Stack (High-probability shorts)

Mixed / Flat Stack (Avoid trading)

• EMA10 ↔ EMA21 crossing repeatedly

• SMA50 flat, hugging SMA100

• Price whipping SMA50

👉 This is where gold kills accuracy

🎯 WHICH MA LEADS IN XAU/USD?

——————————————————————————-

FAILURE CASE 1: RANGE / MEAN-REVERSION TRAP (Most Common)

What you see

• EMA10 ↔ EMA21 crossing repeatedly

• SMA50 flat, glued to price

• SMA100 & SMA200 horizontal

Why MAs fail

• Gold is auctioning value, not trending

• Correlation between fast & slow MAs collapses

Result

• Fake breakouts

• Death by small losses

Filter (MANDATORY)

❌ Do not trade when SMA50 slope ≈ 0
❌ Skip when EMA10 crosses EMA21 more than 2× in 20 candles

FAILURE CASE 2: NEWS / MACRO SHOCK (CPI, FOMC, NFP)

What you see

• Price spikes straight through all MAs

• EMA10/21 lag badly

• SMA50 ignored

Why MAs fail

• MAs are lagging; liquidity reprices instantly

Result

• Entries at extremes

• Slippage & stop hunts

Filter

⏰ No MA-based trades 30 min before / after red news

FAILURE CASE 3: REAL-YIELD DIVERGENCE (Silent Killer)

What you see

• Bullish MA stack

• Price holding above EMA21

• But gold suddenly dumps

Why MAs fail

• US real yields flip direction first

• MA structure reacts late

Result

• Trend appears intact → sudden breakdown

Filter

❌ If real yields ↑ while price above EMA21 → reduce size / exit

FAILURE CASE 4: END-OF-TREND EXHAUSTION

// === INPUTS ===
emaFastLen = 10
emaMidLen = 21
sma50Len = 50
sma100Len = 100
sma200Len = 200
atrLen = 14
atrMult = 2.0

// === MOVING AVERAGES ===
ema10 = ta.ema(close, emaFastLen)
ema21 = ta.ema(close, emaMidLen)
sma50 = ta.sma(close, sma50Len)
sma100 = ta.sma(close, sma100Len)
sma200 = ta.sma(close, sma200Len)

// === ATR ===
atr = ta.atr(atrLen)

// === SLOPE FILTER ===
sma50Slope = sma50 – sma50[5]
trendValid = math.abs(sma50Slope) > atr * 0.05

// === REGIME FILTER ===
bullRegime = close > sma200 and sma100 > sma200
bearRegime = close < sma200 and sma100 < sma200

// === TREND ALIGNMENT ===
bullTrend = ema21 > sma50 and ema10 > ema21
bearTrend = ema21 < sma50 and ema10 < ema21

// === EXHAUSTION FILTER ===
notOverextended = math.abs(close – ema21) < atr * atrMult

// === SESSION FILTER (UTC) ===
// Trade only London + NY
hourUTC = hour(time)
sessionOK = (hourUTC >= 7 and hourUTC <= 20)

// === FINAL CONDITIONS ===
longCondition =
bullRegime and
bullTrend and
trendValid and
notOverextended and
sessionOK and
ta.crossover(ema10, ema21)

shortCondition =
bearRegime and
bearTrend and
trendValid and
notOverextended and
sessionOK and
ta.crossunder(ema10, ema21)

// === EXECUTION ===
if (longCondition)
strategy.entry(“LONG”, strategy.long)

if (shortCondition)
strategy.entry(“SHORT”, strategy.short)

// === EXIT RULES ===
strategy.exit(“Exit Long”, “LONG”, trail_price=ema21, trail_offset=atr)
strategy.exit(“Exit Short”, “SHORT”, trail_price=ema21, trail_offset=atr)

// === PLOTS ===
plot(ema10, color=color.orange)
plot(ema21, color=color.yellow)
plot(sma50, color=color.blue)
plot(sma100, color=color.purple)
plot(sma200, color=color.red)

📊 EXPECTED PERFORMANCE (REALISTIC)

🧠 IMPORTANT NOTES

• This system wins by skipping trades

• If you remove filters → expectancy collapses

• Best performance during macro-aligned gold trends