Direct Answer
Mansfield Relative Strength is a relative strength measure used to compare performance of one asset or group against another benchmark or peer set. The production page must define the exact calculation convention before interpreting higher or lower readings, because platform and provider implementations can differ.
Mansfield Relative Strength: Formula, Meaning, Signals, Examples and How to Use It
How Is Mansfield Relative Strength Calculated?
A form of relative strength associated with Stan Weinstein's stage analysis. It takes the ratio of a stock to a benchmark and measures how far it sits above or below its own long moving average, so the result oscillates around zero.
Formula: RS = stock price / benchmark price; Mansfield RS = (RS / 52-week moving average of RS - 1) x 10 (the scaling factor varies between sources)
Inputs:
- Stock price series
- Benchmark index price series
- Weekly data and a 52-week average of the ratio
Worked example. If the stock-to-benchmark ratio is 1.30 and its 52-week average is 1.20, the Mansfield value is 0.83. The inputs are illustrative numbers, not market data.
Reading it. A positive value means the stock's relative strength is above its own long-term average, and a negative value means it is below. Analysts look at zero-line crossings and the direction of the line to judge whether the stock is outperforming or lagging the benchmark.
Limits. Implementations differ in the average length, the scaling and the data frequency, so the same stock can show different values. It measures strength relative to the stock's own history, not by itself an outperformance versus peers.
Indicator overview
| Attribute | Value |
|---|---|
| Category | Relative Strength |
| Asset classes | Stocks, ETFs, Indexes, Sectors, Industries |
| Output type | Line/scalar |
| Parameters | Varies by implementation; document exact settings on use |
What is Mansfield Relative Strength?
Mansfield Relative Strength is a relative strength measure used to compare performance of one asset or group against another benchmark or peer set. The production page must define the exact calculation convention before interpreting higher or lower readings, because platform and provider implementations can differ.
For Swoopr, the canonical profile separates definition, calculation, interpretation and decision use. That keeps readers from collapsing a descriptive metric into a trading strategy. An indicator can describe trend, momentum, volatility, participation, positioning or risk without providing a complete entry, exit, sizing or portfolio decision.
What does it measure?
Mansfield Relative Strength measures specific market properties in the Relative Strength domain. The practical value is repeatability: the same inputs and formula can be applied across a defined dataset, allowing users to compare readings through time or across instruments when the calculation convention is held constant.
How to read Mansfield Relative Strength
Interpretation depends on the market property being measured. A descriptive reading is not automatically predictive. The same numerical state can lead to different outcomes in a strong trend, quiet range, event-driven gap or illiquid market. Always combine with context from price structure, volume, and broader market regime before drawing conclusions.
Strengths
- Dividing the ratio by its own long average centers the value on zero, so above and below the average are split at a fixed line.
- With the benchmark in the denominator, a market-wide decline affects both sides alike and the oscillator isolates relative movement.
- Reproducible when the formula and data convention are fixed.
Weaknesses and limitations
- The 52-week average makes the line slow, so it responds to a change in leadership only many weeks after it begins.
- A recent listing lacks the history for a 52-week average, so the oscillator cannot be computed for it.
- Correlated indicators can create false confidence by repeating the same underlying information.
Editorial and risk note
This page is educational content, not individualized investment advice. It should not imply guaranteed prediction, accuracy or outperformance. Where multiple valid definitions exist, Swoopr states the alternatives and the reason for selecting its primary convention.
Frequently Asked Questions
Is Mansfield Relative Strength a buy or sell signal?
No. A positive value means the stock's relative strength is above its own long-term average, and a negative value means it is below. Implementations differ in the average length, the scaling and the data frequency, so the same stock can show different values. A trade built on it still needs a trigger, an invalidation rule, a position size and realistic execution assumptions.
What is the best setting for Mansfield Relative Strength?
Mansfield Relative Strength takes these inputs: stock price series; benchmark index price series; weekly data and a 52-week average of the ratio. There is no universal best setting for the tunable ones, so test them across instruments, regimes and out-of-sample periods and favor stable parameter regions over one historical winner.
Can Mansfield Relative Strength be used by itself?
Implementations differ in the average length, the scaling and the data frequency, so the same stock can show different values. It measures strength relative to the stock's own history, not by itself an outperformance versus peers. For that reason it is read next to measures of direction, participation, valuation, liquidity and risk, not alone.
Does Mansfield Relative Strength work on every timeframe?
The calculation (RS = stock price / benchmark price; Mansfield RS = (RS / 52-week moving average of RS - 1) x 10 (the scaling factor varies between sources)) can be run on any bar size, but behavior is not portable: a reading on a five-minute chart describes a very different market window from the same reading on a daily chart. Validate the exact timeframe before relying on it.
Why does Mansfield Relative Strength give false signals?
The 52-week average makes the line slow, so it responds to a change in leadership only many weeks after it begins. A recent listing lacks the history for a 52-week average, so the oscillator cannot be computed for it. Lag, noise and regime changes add to this, because market participants react to new information after the reading is calculated.
How should Mansfield Relative Strength be backtested?
Rebuild Mansfield Relative Strength from stock price series using point-in-time data, write the rules before testing, include delisted securities where relevant, model realistic fills and costs, reserve a validation sample and compare with a simpler baseline.