Williams %R vs MACD
Williams percent r measures where the close sits inside the recent high-low range, bounded and unsmoothed, so it responds to the latest bar. The moving average convergence divergence subtracts a slow exponential average of closes from a fast one and is unbounded, so it keeps reporting through a trend.
One reacts to the bar that just closed. The other is a difference between a twelve-period and a twenty-six-period average. People run both and then wonder why they disagree, when disagreement is what two tools on completely different clocks are supposed to produce.
What each one is
Williams percent r measures where the close sits inside the recent high-low range, from minus one hundred to zero, unsmoothed. Williams %R covers it.
The moving average convergence divergence subtracts a slow exponential average of closes from a fast one, plots a signal average of that difference, and draws the gap as a histogram. MACD covers all three parts, and RSI covers the momentum family they sit in.
One is bounded and one is not. A position within a range has a maximum; a distance between two averages does not, whereas the practical consequence is that only one of them can still say anything once a trend is established.
Where they differ
How much history is in the number. Williams percent r responds to the latest bar against a short lookback. The moving average convergence divergence carries twenty-six bars of exponentially weighted history, so it barely notices what the fast tool reacts to.
Which part of the bar is read. Williams uses the high and the low of its lookback, so a long wick registers. The moving average convergence divergence is built entirely from closes and never sees a wick at all.
Whether the scale ends. Williams reaches zero and sits there for the length of a trend. The other keeps widening, so the difference between a firm move and a violent one stays visible on one and is lost on the other.
What each gives you to act on. Williams gives a level. The moving average convergence divergence gives crossings and a histogram shape, which are discrete events a rule can be written around — though three drawings of one difference is more to look at rather than more information.
Where they agree
Both are momentum readings and both are misused as reversal signals. A large reading says the recent move was strong, and strength is how trends begin.
Both are computed from bars that have already closed. Neither leads price in any sense that survives checking.
Both fight the same drift. On this site’s shared series 54% of 566 ten-bar windows finished higher than they started.
And both cost a round trip when acted on — 0.0098 here, about 2% of the median bar range of 0.493 — paid far more often by the faster of the two.
Which one to use
Run the moving average convergence divergence when you need to know the condition. Above or below zero, and whether the histogram is widening, are the two things that survive a trend — and the condition is what decides whether any timing tool is worth using at all.
Run williams percent r for timing once the condition is settled. No smoothing means no delay, and inside a confirmed range that is precisely what you want.
Run both, in that order. The slow one names the environment; the fast one picks the moment. This works because they fail in opposite conditions rather than the same one.
And when the fast one is extreme and the slow one is trending, ignore the fast one. That is what a bounded oscillator does in every trend, so it carries no information about this particular one.
Why the most-taught tool is not the most-sought
Because teaching volume tracks familiarity, not demand. The moving average convergence divergence appears in 473 titles here — among the highest counts in the corpus — at a median of 3,534 views, which is among the lower medians. Three hundred and sixty-three separate channels have covered it.
And because its default settings are historical rather than optimal. Twelve, twenty-six and nine derive from a six-day trading week, which stopped applying decades ago.
The original data
Of the 24,971 unique videos in the search corpus, no title compares these two directly. The moving average convergence divergence appears in 473 titles at a median of 3,534 views across 363 channels. Williams percent r appears in 46, at a median of 3,253 across 45.
Ten times the videos and almost the same median audience. Both sit near 3,200 views per video, which means the enormous difference in coverage bought nothing — a subject covered 473 times and one covered 46 times deliver the same result per video, because both are answered thoroughly already.
On the chart above the histogram carries the information. Shrinking while positive means the move is intact and decelerating; pinned means only that the ceiling was reached and has not been left.
When it fails
The characteristic failure is using them as substitutes and treating the disagreement as a problem. They run on different clocks — one bar against twenty-six — so contradiction is the normal state rather than a fault, and a trader who waits for both to line up is waiting for the fast tool to unpin, which happens after the move is over. Used as a pair with distinct jobs the same disagreement is legible: fast extreme with slow trending is a pullback inside an intact move, and fast extreme with slow flat is a sharp move inside a market going nowhere.
A second failure is trading every signal-line cross. In a range they arrive constantly and each pays a round trip.
A third is reading a divergence as a forecast. It describes two lines, and most resolve by the indicator catching up.
A fourth is running williams percent r beside a stochastic, which is one measurement with the sign flipped.
And a fifth is tuning either lookback until the last swing is caught, which fits that sample alone.
Related
Williams %R covers the raw range-position reading. MACD covers the line, the signal and the histogram. And RSI covers the momentum family both belong to.
One of these responds to the last bar and the other averages twenty-six of them. Used as substitutes they contradict each other constantly; used as a pair, one names the condition and the other times the entry inside it, and the contradiction stops being a problem.
— Michael Whitman
This page is educational, not financial advice. Test every idea on your own charts before risking money.