Mansfield Relative Strength: Spot Stocks Outperforming the Market
Mansfield Relative Strength compares a security's price with a benchmark and measures that ratio relative to its moving average. It helps distinguish relative leadership from absolute price strength. A positive reading does not guarantee a rising stock, a profitable trade, or outperformance over every recent interval.
What the Mansfield Reading Measures
Pineify's implementation first divides the chart's close by the benchmark's close. It divides that ratio by a moving average of the ratio, subtracts one, and multiplies by 10. Consequently:
- A positive value means the current price ratio is above its selected moving average.
- A negative value means the ratio is below its moving average.
- Zero means the ratio equals its moving average at that observation.
The scale factor is not a percentage-return calculation. For a hypothetical ratio of 0.025 and average ratio of 0.024, the displayed reading is about 0.417. This does not mean the stock returned 0.417% or beat the index by that amount over a fixed holding period.
A stock can underperform the benchmark today while its ratio remains above its longer-term average. Conversely, both assets can decline while the stock loses less and gains relative strength. A market-wide decline therefore does not force every MRS reading below zero.
The Benchmark and Settings in Pineify
The reviewed implementation uses SP:SPX, the S&P 500 index, as a fixed benchmark. It does not expose a comparison-symbol input. SPY, QQQ, and Bitcoin are not selectable benchmark presets in this version. A different benchmark requires a separate implementation or a verified modification to the exported script.
The configuration exposes these length inputs:
| Input | Configured default |
|---|---|
| Daily length | 200 |
| Weekly length | 52 |
| Monthly length | 10 |
| Other periods length | 52 |
These are product defaults, not evidence that the settings are optimal or an institutional standard. The moving-average type defaults to SMA.
Version-specific limitation: the reviewed timeframe selector compares the chart period with the older strings D, W, and M. TradingView's Pine v6 migration guide explains that the current values include a multiplier, such as 1D. In a v6 export with those older comparisons, the selector falls through to the “Other periods” length. Check the exported version and effective length; do not assume that changing the labeled daily input changes a daily chart. Until that selector is corrected, the other-period input controls that branch.
Add and Inspect the Indicator
- Add Mansfield Relative Strength in the Pineify editor and inspect its available inputs.
- Generate or export the script, then open TradingView's Pine Editor from the right toolbar.
- Paste the script, save it, and add it to the chart. Resolve any reported errors before relying on the output.
- Confirm that the benchmark data is available and enough history exists for the selected average.
- Compare several readings with a separately calculated price ratio and its average, including a point near zero.
The indicator draws a line, a dashed zero baseline, and optional positive/negative background shading. Color conveys the sign of the calculation; it does not measure confidence or the probability of profit.
Use Relative Strength as a Research Filter
A practical screen can separate securities into four groups: positive and rising, positive and falling, negative and rising, or negative and falling. Define “rising” explicitly—for example, above the preceding completed bar—before comparing groups. These describe the normalized ratio, not guaranteed future price behavior.
Then inspect the security's own trend, liquidity, and investment context. A positive relative reading during a broad selloff may still accompany a substantial absolute loss. Choosing a stock over an index fund also requires attention to concentration, costs, diversification, and the investor's objective; MRS alone cannot answer that decision.
Test a Specific Rule
To research a zero-cross rule, specify the chart interval, effective average length, entry after a completed cross above zero, exit after a completed cross below zero, and fill timing. An indicator does not produce a Strategy Tester trade report by itself; a strategy must implement those orders. See TradingView's strategy documentation for broker-emulator and cost assumptions.
Use a point-in-time stock universe where possible. Selecting only today's successful stocks can bias a historical screen. Include commissions, spreads, slippage, turnover, and drawdown. Compare both absolute returns and returns relative to a suitable benchmark over the same dates. Keep a later evaluation period separate from the period used to choose settings.
Benchmark sessions also matter. A continuously traded crypto asset and a US equity index do not update on the same schedule. An unchanged or unavailable benchmark value can distort the meaning of a cross-market ratio. Do not assume that applying the indicator to any chart makes that comparison economically appropriate.
Does a positive MRS mean the stock beat the market today?
No. It means the current stock-to-benchmark price ratio is above its selected moving average. A one-day relative return is a different calculation.
Can I change the benchmark to QQQ or Bitcoin?
The reviewed Pineify version hardcodes SP:SPX and has no benchmark input. A different comparison requires another implementation or a verified script change.
How is MRS different from RSI?
MRS compares two price series and normalizes their ratio against an average. RSI measures the balance of gains and losses within one series. Their readings answer different questions.
Can positive relative strength prevent losses?
No. A stock can fall while outperforming a benchmark that falls more. Relative strength does not replace position sizing or a defined exit policy.
Why might the daily length input appear to have no effect?
In the reviewed v6 calculation, older timeframe-string comparisons can select the other-period length instead. Verify the exported code and effective length before interpreting a test.