Relative Strength vs. RSI — A Critical Distinction
Many candidates confuse Relative Strength (RS) with the Relative Strength Index (RSI). The CMT exam tests both:
- RSI is an oscillator measuring momentum (0–100 scale)
- Relative Strength compares one asset's performance to another (a ratio)
This distinction is frequently tested on CMT Level 1 and Level 2. For the complete overview, see the CMT Exam Guide 2026.
Calculating Relative Strength
RS Ratio = Price of Asset A / Price of Benchmark
- If the RS line is rising → Asset A is outperforming the benchmark
- If the RS line is falling → Asset A is underperforming
- Trendlines and moving averages can be applied to the RS line itself
Mansfield Relative Strength
The Mansfield RS normalizes the ratio by dividing by a moving average:
- Above zero: Outperforming on a relative and MA-adjusted basis
- Below zero: Underperforming
- Transitions through zero are actionable signals
Relative Rotation Graphs (RRG)
RRGs visualize relative performance in four quadrants:
- Leading (top right): Strong and improving — overweight
- Weakening (bottom right): Strong but deteriorating — reduce
- Lagging (bottom left): Weak and deteriorating — underweight
- Improving (top left): Weak but improving — accumulate
This framework is closely tied to sector rotation and portfolio management.
Applications of Relative Strength
Stock Selection
- Buy stocks with rising RS vs. their sector index
- Avoid stocks with weakening RS even if price is rising
- Use breakout signals on RS charts for confirmation
Sector Rotation
RS analysis drives sector rotation strategies:
- Identify sectors rotating from lagging to improving
- Intermarket analysis extends RS to asset classes (stocks vs. bonds, gold vs. USD)
Market Regime Detection
- Compare growth vs. value, small cap vs. large cap
- Risk-on vs. risk-off using equity/bond RS
Comparative RS Table
| RS Application | Level Tested | Integration |
|---|---|---|
| Stock vs. index RS | Level 1 & 2 | Chart patterns |
| Sector vs. market | Level 2 | Intermarket |
| Relative Rotation Graphs | Level 2 & 3 | Portfolio mgmt |
| Mansfield RS | Level 2 | Moving averages |
| Asset class RS | Level 3 | Risk management |
CMT Exam Strategies
- Never confuse RS with RSI on the exam — read questions carefully
- Know how to interpret an RS line chart (rising = outperforming)
- Understand RRG quadrant rotation for portfolio decisions
- Practice RS-based stock screening questions
Try RS-focused practice questions in our test bank. Full guide: CMT Exam 2026.
Relative Strength Ratio — Stock vs. S&P 500
Rising RS line = outperformance; falling = underperformance
Relative Rotation Graph — Sector Positioning
Quadrant scores: Leading, Weakening, Lagging, Improving (simulated)