Reading Momentum: Spotting Bullish and Bearish Divergence With RSI and MACD
In 1991, technical analyst Martin Pring published "Technical Analysis Explained," a book that became one of the standard references for traders trying to understand price behavior beyond simple chart patterns. One of the ideas Pring helped popularize for a generation of retail traders is divergence, the situation where a stock's price and a momentum indicator built from that price start telling two different stories. When that happens, Pring's core insight was simple: trust the indicator's warning before the price confirms it, because momentum tends to shift before price does.
Divergence is a term for a mismatch. It shows up when price makes a new high or low, but a momentum indicator, a tool that measures the speed and strength of recent price moves rather than the price level itself, fails to confirm that new extreme. Two of the most widely used momentum indicators for spotting this are the Relative Strength Index (RSI), which measures how fast and how far a stock has moved up versus down over a recent period, and the Moving Average Convergence Divergence indicator (MACD), which compares two moving averages of price to gauge whether buying or selling pressure is accelerating or fading.
This concept has stuck around for decades because it addresses a problem every trader eventually runs into: price alone does not tell you whether a move has real strength behind it or is running on fumes. A stock can keep grinding to new highs while the underlying buying pressure is quietly weakening, and divergence is one of the more reliable early warnings that a trend's momentum, not just its price, is starting to roll over. It will not catch every reversal and it is not a signal to act on alone, but once you can see it on a chart, you will start noticing it everywhere.
What Divergence Is and How to Read It
Start with the basic vocabulary. A bearish signal is one that suggests downward pressure or weakening upside momentum; a bullish signal suggests the opposite, upward pressure or weakening downside momentum. Overbought and oversold describe the extremes of an indicator's typical range, generally RSI above 70 is considered overbought (the move may be stretched) and RSI below 30 is considered oversold (the selloff may be stretched).
Bearish divergence happens when price prints a higher high (a peak above its previous peak) while the momentum indicator prints a lower high (a peak below its previous peak) over that same stretch of time. In plain terms, the stock is still climbing, but each new push upward is getting weaker under the hood. That mismatch is a caution flag, it does not mean the stock will fall immediately, but it tells you the rally's engine is losing power even as the car is still moving forward.
Bullish divergence is the mirror image: price makes a lower low while the momentum indicator makes a higher low. The stock is still falling, but the selling pressure behind each new low is getting weaker, which can be an early sign that sellers are running out of conviction.
The reason this works at all comes down to how RSI and MACD are built. Both are derived from the rate of change in price, not the price level itself. A stock can keep inching to new highs on smaller and smaller gains, which is exactly the kind of fading momentum that shows up as a flattening or declining indicator even while the price line keeps rising. RSI tends to be the more sensitive, faster signal, useful for spotting divergence early, while MACD, because it is built from two moving averages, tends to confirm a shift with a bit more lag but also a bit more reliability. Using both together, as this week's charts do, is a common way to avoid acting on a divergence signal from only one indicator.
Chart 1: TSLA daily closing price, June 10 to October 30, 2026 (top panel), with a 14 period RSI below. Between early September and October 9, TSLA's closing price pushed to three successive higher highs (the red dashed line), while RSI over that same stretch made a lower high (the red dashed line in the bottom panel). That mismatch, rising price, fading momentum, is the bearish divergence this week's lesson is built around.
A Worked Example: TSLA's September to October Divergence
This week's chart uses real, unmodified daily closing data for Tesla (TSLA) pulled directly from market data for this article. No split adjustment was required for this window because TSLA's most recent stock split took effect in August 2022, well before the June through October 2026 period shown here.
Look at the three price peaks marked on Chart 1. On September 3, 2026, TSLA closed at roughly $376.37 with RSI at about 61.8. On September 23, it closed higher at about $380.12, with RSI essentially flat at about 61.2. Then on October 9, TSLA closed at its highest point of that stretch, about $382.70, but RSI had slipped further to roughly 60.0. Each price peak was higher than the last. Each RSI peak was lower than the last. That is bearish divergence by the book: the stock kept climbing, but the momentum behind the climb was quietly fading with every new high.
Chart 2 shows the same window with MACD swapped in underneath price instead of RSI, as a second, independent check on the same signal. The MACD line told the same story: it measured about 6.42 on September 23 and only about 5.12 by October 9, a lower high even as price notched a higher one. Having two separate momentum indicators agree on the same divergence, rather than relying on just one, is exactly the kind of confirmation Pring's approach to technical analysis emphasizes.
What happened next matters as much as the divergence itself. Within a week of that October 9 high, TSLA fell to a close of about $354.72 on October 16, a decline of roughly 7.3% from the divergence high. That is the kind of follow through that makes traders pay attention to this signal in the first place, though it is worth being honest that not every divergence resolves this cleanly, more on that in the limits section below.
Here is a HYPOTHETICAL illustration only, not a recommendation and not something that actually happened in a real account. If a trader had noticed the bearish divergence forming by October 9 and sold or shorted near that day's close of about $382.70, with a stop loss placed just above the high at, say, $392 (to limit the loss if the breakout kept going instead of reversing), a decline to the $355 area by October 16 would have represented a gain of roughly 7% on the short, against a risk of roughly 2.4% if the stop had been hit instead. That is a hypothetical risk to reward setup only, real trading involves slippage, fees, and the real possibility the trade does not work.
Chart 2 also shows something just as instructive: what it looks like when a new high is NOT accompanied by divergence. By October 27, TSLA rallied to a fresh closing high of about $407.46 for this window, and this time both RSI (about 65.6) and MACD (about 6.27, moving to roughly 9.08 by October 30) also pushed to fresh highs alongside price. No divergence was present. That contrast is the real lesson: divergence is not something you see on every new high, and its absence on a strong move is itself useful information, it suggests the rally has genuine momentum behind it rather than running on fumes.
Chart 2: The same TSLA price series with MACD and its signal line below instead of RSI. The lower high in the MACD line between September 23 and October 9 confirms the divergence seen in Chart 1 on a second, independent indicator. By contrast, the October 27 high was matched by a fresh high in MACD too, showing a healthy move with no divergence warning attached.
A Checklist Before You Act on Divergence
- Confirm the divergence on both the price chart and the indicator using actual swing highs or lows, not just a general sense that "price is up and the indicator looks lower." Mark the specific peaks or troughs you are comparing.
- Check a second momentum indicator, as this article did with RSI and MACD together, rather than relying on just one. Agreement between the two adds confidence; disagreement is a reason to wait.
- Look at the broader trend context. Divergence against a strong, well established uptrend tends to produce shallower pullbacks than divergence that shows up after a stock is already extended or near a longer term resistance level.
- Wait for price confirmation before acting, such as a break below a recent swing low (for bearish divergence) or above a recent swing high (for bullish divergence), rather than trading the divergence signal the moment you spot it.
- Decide your stop loss and position size before entering, exactly as described in the hypothetical example above, so the trade's risk is defined no matter which way it goes.
Limits and Risks
No chart pattern or indicator, including momentum divergence, works every time. Divergence can persist for weeks without resolving into an actual reversal, and a stock in a genuinely strong uptrend can show repeated minor divergences while continuing to climb regardless, a phenomenon some traders call divergence failure. Acting on every divergence signal in isolation, without confirmation from price action, volume, or the broader trend, is a common way new traders lose money chasing a reversal that never comes.
RSI and MACD are both lagging to some degree, they are calculated from past price data, so by the time a divergence is visible, some of the move may have already happened. False signals happen in both directions, and choppy or range bound markets tend to produce more unreliable divergence signals than markets in a clear trend. This concept works best as one input among several, combined with support and resistance levels, trend direction, volume, and sound risk management such as defined stop losses and reasonable position sizing, rather than as a standalone trading system. Past patterns, including the TSLA example above, are historical observations and are not a guarantee that similar setups will resolve the same way in the future.
See this week's lesson applied live on TruCharts
Reading divergence on a static chart is one thing, finding it yourself on a live chart is the real skill. TruCharts' interactive stock charts let you overlay RSI and MACD on any ticker, including TSLA, stack them beneath the price panel just like this week's examples, and scroll back through real history to practice spotting the same kind of higher high in price paired with a lower high in momentum we just walked through together.
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Coming up next week: we will look at William O'Neil's cup and handle pattern, a classic base and breakout setup from his book "How to Make Money in Stocks," and walk through how to judge whether a breakout from that base is a proper buy point or a premature one. Read it here once it is live.
This article is for educational and informational purposes only and is not financial or investment advice. Any hypothetical trade examples described above are clearly labeled as hypothetical and do not represent actual trades or guaranteed outcomes. Past price behavior, including the real TSLA data shown here, is not a guarantee of future results. Please consult a licensed financial advisor before making any investment decisions.
