The moving average (MA) — an average of closing prices over a set window — is the oldest and most widely used trend indicator. Yet many traders use it shallowly ("buy the golden cross"). In trend following, moving averages carry far more information. This guide reads them through three lenses: alignment, slope, and extension.
What the 50-, 150-, and 200-day lines mean
The three standard lines each represent a different time horizon of market psychology.
- 50-day (~10 weeks): the short-term trend, and the line a strong leader defends first on a pullback. Stocks under accumulation rarely break it.
- 150-day (~30 weeks): the medium-term anchor. Even after losing the 50-day, holding the 150-day keeps the medium trend intact.
- 200-day (~40 weeks): the long-term line in the sand. Its direction defines the big picture — above it is a bull market, below it a bear.
1. Alignment — stacked vs. inverted
"Alignment" is the order the lines sit in. When the shorter line is on top — price > 50-day > 150-day > 200-day — the arrangement is stacked (a proper uptrend). It means buyers at almost any point are in profit, so selling pressure is light and the trend is stable. The opposite (longer line on top) is the classic downtrend. The five moving-average conditions of the Trend Template simply quantify this stacked state.
2. Slope — direction before alignment
Even a stacked alignment isn’t a real uptrend if the 200-day line still points down. A stock just bouncing off the bottom can look stacked momentarily while the big trend still heads lower. That’s why the Trend Template requires the 200-day to be rising for at least a month. Always check slope (direction) before alignment.
3. Extension — too far and it reverts
Extension measures how far price has stretched from a moving average. Even a strong leader that runs too far above its 50-day tends to pull back toward the line (mean reversion). Conversely, when a trending stock dips back toward its 50- or 20-day and extension compresses, that becomes a candidate for a pullback buy. Extension helps gauge when a purchase is risky versus favorable.
Using it in Trend Screener
Trend Screener’s eight conditions already encode moving-average alignment, slope, and position. So a name filtered as 8/8 satisfies the stacked, rising-200-day requirements without you drawing a single line. Pulling up each stock’s chart and re-reading the 50/150/200-day lines through the three lenses above trains your eye for which candidate sits in the better spot to buy.