Education
Moving-average crosses,
explained with real charts
Every signal below is the exact thing this service watches for. All charts show real daily prices for AMZN, MSFT, META and GOOGL — the marked dot is an actual cross event, not an illustration.
Basics
What is a simple moving average?
An SMA is the average closing price over the last N trading days — SMA50 averages the last 50, SMA200 the last 200. Averaging smooths the day-to-day noise into a line that shows the trend: short averages (SMA50) turn quickly and track momentum; long averages (SMA150, SMA200) turn slowly and describe the long-term regime. The signals traders watch are crosses — the moment one line moves through another.
Signal 1 · Bullish
The golden cross — SMA50 crosses above SMA200
What it means: the average price of the last 50 days has overtaken the average of the last 200 — recent buying is strong enough to bend the long-term trend upward. It's read as confirmation that a downtrend has ended and a durable uptrend may be starting.
Why it matters: it's one of the most-watched signals in markets. Because so many funds and screeners track it, the cross itself attracts buyers — famous golden crosses (S&P 500 in 2019, 2020 and 2023) preceded extended rallies. It fires rarely — often once a year or less per stock — which is exactly why an alert beats watching charts.
Signal 2 · Bearish
The death cross — SMA50 crosses below SMA200
What it means: the mirror image — 50-day average falls through the 200-day. Recent selling has been heavy enough to turn the long-term trend down. Traders read it as a warning to cut exposure, tighten stops, or hedge.
Worth noticing: this chart and the golden-cross chart above are the same stock, a few months apart — a death cross in March followed by a golden cross in May. Crosses mark regime changes; they don't promise the regime lasts. That's also the honest caveat: in choppy markets the pair can whipsaw.
Signal 3
Price crossing its moving averages
The second family of signals: the price itself crossing one of its SMAs. The shorter the average, the earlier (and noisier) the signal; the longer the average, the rarer and more meaningful the cross. Above the line is read as bullish, below as bearish.
Price × SMA50 — the momentum line
Crossing above the 50-day says the stock has recovered its recent range — an early trend-change signal. Fast, frequent, best used as a heads-up rather than a verdict.
Price × SMA100 — the intermediate check
The 100-day sits between momentum and regime. Reclaiming it after a correction is often the first sign the correction is over.
Price × SMA150 — trend confirmation
Slow enough to ignore most noise. Institutions use the 150-day (30-week) line in stage analysis: above a rising SMA150 is the classic definition of a stock in an uptrend "stage 2".
Price × SMA200 — the regime line
The most-watched line in technical analysis. Above the 200-day is broadly "healthy"; below it is where bear markets live. Crosses are rare — when price reclaims or loses the 200-day, it makes financial headlines.
Cheat sheet
Reading the signals
| Signal | Direction | Reads as | Speed / noise |
|---|---|---|---|
| Golden cross (SMA50 ↑ SMA200) | Up | Bullish — long-term trend turning up | Slow, rare, high signal |
| Death cross (SMA50 ↓ SMA200) | Down | Bearish — long-term trend turning down | Slow, rare, high signal |
| Price ↑/↓ SMA50 | Either | Momentum shift | Fast, frequent, noisy |
| Price ↑/↓ SMA100 / SMA150 | Either | Intermediate trend change | Medium |
| Price ↑/↓ SMA200 | Either | Regime change | Slow, rare, headline-grade |
Moving-average signals are lagging — they confirm trends, they don't predict them, and they whipsaw in sideways markets. Everything here is for education, not financial advice.