When price makes a new high but momentum doesn't, the move is running on fumes.
The RSI — relative strength index — measures the speed of a move on a scale of 0 to 100. Divergence is when price and RSI disagree: price pushes to a new extreme but momentum quietly fails to follow. It's often the first crack before a turn.
Before the divergence trick, be honest about the dial. The RSI compresses the last fourteen bars of gains versus losses into one number: above 70 the move has been unusually fast ("overbought"), below 30 unusually fast down ("oversold"). Here's the folklore to unlearn on day one: overbought is not a sell signal. In a strong uptrend the RSI can camp above 70 for weeks while the stock keeps climbing — expensive gets more expensive; that's what strength is. What the gauge genuinely tells you is the speed of the crowd: how hard buyers or sellers have been pressing, lately. Speed readings become interesting at extremes and at disagreements — and the disagreement is where the real edge lives.
Bearish divergence: price makes a higher high but RSI makes a lower high — the rally is slowing even as price ticks up. Bullish divergence: price makes a lower low but RSI makes a higher low — selling is losing force. Picture a car coasting: still moving forward, but no longer accelerating.
The classic divergences warn of turns; their mirror image whispers continuation, and far fewer traders know to look for it. In an uptrend, price prints a higher low on a pullback while the RSI prints a lower low — momentum washed out deeper than price did. That's hidden bullish divergence: the dip was an emotional flush, not real distribution, and the trend is likely to resume. Flip it for downtrends — a lower high in price with a higher high in RSI marks a bounce running on hope. The mnemonic that keeps the two families straight: regular divergence appears at the extremes of a move and argues against it; hidden divergence appears in the pullbacks and argues for it. One warns you off the tired trend; the other invites you into the healthy one at a discount.
Divergence has a home field. It bites hardest at the end of an extended move — a stock that has climbed for months, gone vertical, and now prints new highs on visibly fading momentum, ideally right into a known resistance level. It bleeds you in two places. In a choppy range, price and RSI wobble apart constantly and every squiggle looks like a signal; there is no trend to exhaust, so exhaustion readings mean nothing. And against a genuinely strong trend, divergence can persist for weeks while the stock doubles — shorting every bearish divergence in a monster uptrend is one of the most reliable donation schemes in trading. The filter is confluence, the same discipline as everywhere else on the chart: divergence plus a level, plus a break in price structure. Alone, it's a mood. Stacked, it's a setup.
Divergence is a warning, not a trigger. It tells you a trend is tiring, so you tighten stops, take partial profit, or wait for price itself to confirm — a broken trendline or level — before acting. It's strongest at the end of an extended move and weakest in a choppy range.
Divergence can persist far longer than you'd expect — a strong trend can diverge for weeks and keep going. Never short a higher high on divergence alone; wait for price itself to confirm the turn.
Fresh charts you haven't seen, drawn live and shuffled together, with a couple of “why” questions in the mix. No hints until the end. Clear 6 of 8 and the module is yours.
Rate it and tell us how to make it better — no account needed.