EMA Crossover for US500 (S&P 500)

Two exponential moving averages — buy when the fast crosses above the slow, exit when it crosses back.

Why EMA Crossover Works on US500

The EMA crossover is the textbook trend-following strategy. A fast EMA (typically 9–13) reacts to recent price; a slow EMA (21–50) tracks the broader trend. The crossover marks a regime change. It captures large directional moves in trending markets and fails predictably in chop — making it easy to layer with a regime filter.

The S&P 500 (US500) is the global benchmark equity index. Strong long-term uptrend with regime shifts; momentum and trend bots dominate, mean-reversion works in QE periods only.

Equity indices reflect aggregate corporate earnings, sentiment, and Fed policy. They trend more cleanly than individual stocks and gap less than commodities.

Pine Script Source

Copy this into PineForge — backtest on US500 or any supported symbol, then deploy as a live bot.

//@version=5
strategy("EMA Crossover 9/21", overlay=true)

fast_ema = ta.ema(close, 9)
slow_ema = ta.ema(close, 21)

if ta.crossover(fast_ema, slow_ema)
    strategy.entry("Long", strategy.long)

if ta.crossunder(fast_ema, slow_ema)
    strategy.close("Long")