Is the stock running
out of steam?
RSI is one of the most misused tools in retail trading. Most people treat 70 as “sell” and 30 as “buy.” That framing causes more losses than it prevents. Used correctly, RSI tells you something far more valuable: whether the trend has underlying momentum or is running on fumes.
RSI (Relative Strength Index) measures the speed and size of recent price gains vs losses on a 0–100 scale. In a bull trend, RSI stays elevated (40–80 range). In a bear trend, it stays suppressed (20–60 range). Crossing 70 in a strong uptrend is a sign of power — not a sell signal. The signal that matters most is divergence: when price makes a new high but RSI does not — momentum is fading and a pullback or reversal is coming.
What RSI actually measures
RSI was developed by J. Welles Wilder in 1978. The formula compares the average gain on up days to the average loss on down days over the last 14 periods (the standard setting):
RSI = 100 − [100 / (1 + (Avg Gain / Avg Loss))]
The result is a number between 0 and 100. At 100, every session over the past 14 days was an up-day. At 0, every session was a down-day. In practice, RSI rarely touches the extremes — which is why the range it occupies matters more than the absolute number.
The four RSI zones
Rather than treating RSI as two zones (above/below 70/30), experienced traders read it in four bands:
| Zone | RSI range | What it means | How to use it |
|---|---|---|---|
| Overbought | 70 – 100 | Strong upward momentum. Gains are happening fast relative to any losses | In a bull trend: a sign of power, hold. In a range/bear: watch for divergence to flag exhaustion |
| Bullish zone | 40 – 70 | Normal operating range for a healthy uptrend. Pullbacks stay above 40 | Pullbacks into the 40–50 area in this zone are often the best buying opportunities in a trend |
| Bearish zone | 30 – 60 | Normal operating range for a downtrend. Rallies fail below 60 | In a downtrend, rallies to the 50–60 area often fail and reverse — that is where short sellers add |
| Oversold | 0 – 30 | Accelerated selling. Can stay here for extended periods in a real bear trend | In a bear trend: not a buy signal — it can go lower. In a bull regime: a compressed RSI before a bounce |
The key insight: RSI “overbought” in a strong bull trend is a feature, not a warning. The best momentum stocks spend weeks at RSI 70+ while they run. Selling them at 70 just to “take profits before the pullback” is one of the most common ways traders exit trends far too early.
RSI range shift: how trends declare themselves
One of RSI’s most useful behaviors is what Constance Brown called the “range shift.” RSI does not just oscillate between fixed levels — the range it oscillates in shifts depending on trend direction:
RSI range: 40–80
Pullbacks floor out near 40–45. Rallies push past 70. This is the signature of a stock with institutional buying behind it.
RSI range: 35–65
Oscillates back and forth without getting strongly overbought or oversold. No clear directional edge — reduce position size.
RSI range: 20–60
Rallies fail below 60. Drops push below 30 and stay there. The overhead resistance zone is obvious — shorts add on rallies toward 60.
Practical check: Pull up a 6-month RSI chart for any stock on your watchlist. If you see RSI consistently holding above 45 on every pullback, that stock is in a bull zone. If every rally is dying before RSI hits 60, the stock is in a bear zone. This range analysis takes about 10 seconds once you train your eye.
Divergence: RSI’s most powerful signal
Divergence occurs when price and RSI move in opposite directions. It is not a guarantee of reversal, but it is the clearest early warning that a trend’s momentum is weakening.
📈 Bullish divergence
Price makes a lower low, but RSI makes a higher low. Selling is decelerating even though price is still falling. Smart money may be quietly accumulating.
📉 Bearish divergence
Price makes a higher high, but RSI makes a lower high. Buying momentum is fading even though price is still rising. The move is thinning out.
Important: Divergence is a warning, not a trigger. A bearish divergence in a strong uptrend can last weeks before price rolls over. Use divergence to tighten your stop or reduce size — not as a standalone sell signal. Confirm with price action: a break of a prior swing low, a high-volume reversal candle, or a break below EMA 20 is needed to pull the trigger.
RSI failure swings
A “failure swing” is a specific RSI pattern that Wilder himself considered the strongest reversal signal. It does not compare price to RSI — it only looks at RSI itself:
- Bullish failure swing: RSI falls below 30 (oversold), bounces back above 30, pulls back but holds above 30 on the second test, then breaks above the bounce peak. This “double bottom hold” in oversold territory is one of the cleaner reversal signals RSI produces.
- Bearish failure swing: RSI pushes above 70 (overbought), drops back below 70, rallies but fails to reach 70 again, then breaks below the prior RSI trough. The inability to reclaim overbought territory on a re-test signals exhaustion.
Practical rules for using RSI on MadStocks
- Use RSI as a trend confirmation tool first. Before anything else: is RSI in the 40–80 range on pullbacks? If yes, the trend has underlying momentum. If pullbacks are taking RSI below 35 repeatedly, the trend is weakening.
- Do not sell a position solely because RSI crossed 70. In a bull regime with a bullish EMA stack, RSI staying above 70 for an extended period means institutions are buying size. Respect the momentum until a divergence or structure break gives you a reason to exit.
- Watch for bearish divergence at new highs on your watchlist. When a stock sets a fresh 52-week high but RSI is lower than it was on the previous high, flag it. Tighten your stop to the prior swing low.
- In a bull regime (per Market Regime page), look for RSI resets to 40–50 for pullback entries. A stock that has been running with RSI 65–75 and pulls back to RSI 45 while holding EMA 20 is compressing and resetting — that is a high-quality entry setup.
- Combine RSI with volume and EMA alignment to confirm setups. A bullish divergence on RSI, combined with volume drying up on the second price low and price holding above EMA 50, gives you three layers of confirmation. That is the kind of setup worth sizing into.
See RSI on MadStocks charts
Open any stock chart on MadStocks to see RSI plotted below the price panel.
What the MadStocks RSI Analyzer scores
When you run the RSI Analyzer on any ticker, it checks five conditions and returns a score from 0 to 5:
| # | Signal | Pass condition | Why it matters |
|---|---|---|---|
| 1 | Above Midline | RSI > 50 | Buyers are winning the tug-of-war — the stock has a bullish momentum bias. |
| 2 | Rising RSI | RSI today > RSI yesterday | Momentum is strengthening, not just present — the move has direction. |
| 3 | Strong Momentum | RSI > 60 | Above 60 is the zone where trending moves live — meaningful bullish conviction with room before overbought (70). |
| 4 | Oversold Recovery | RSI ≥ 30 now, was < 30 in last 5 bars | A bounce off the oversold floor is a mean-reversion signal — selling pressure is exhausting. |
| 5 | Not Overbought | RSI < 70 | There is still upside room before the stock enters crowded/extended territory. |
Analyze RSI on Any Stock
MadStocks calculates RSI for any ticker — overbought/oversold zones, divergence signals, centerline regime, and a plain-English verdict so you know exactly where momentum stands.