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IBD RS Rating vs RPS Stock multi-period RPS
⚡ Quick answer (Speakable)
IBD-style RS Rating is often described as a single 1–99 score that blends several performance windows. RPS Stock’s RPS instead shows separate in-market percentiles for RPS20, 50, 90, 120, and 250. Both sit under “relative price strength,” but the blending method differs—so the numbers are not interchangeable. Not a trade recommendation.
🤖 Short summary (TL;DR)
Growth-stock write-ups often cite an IBD-style approximation that weights 63/126/189/252-day returns at 0.4/0.2/0.2/0.2 (it may differ from IBD’s proprietary formula). This site does not reproduce that blend; it places period ranks side by side. When comparing, align market, window, observation date, and valid sample.
⚠️ Method boundaries (read first)
- RPS is a percentile of close-to-close price performance ranked among valid same-market names.
- Example markets: Japan (TSE), US, Hong Kong, China A-shares. Japan coverage is described on-site as 3,700+ TSE listings (valid count varies by data date).
- Display windows: RPS20 / RPS50 / RPS90 / RPS120 / RPS250.
- A research metric for screening and sorting—not a rating, forecast, or investment advice.
- This site does not reproduce or guarantee IBD’s proprietary RS Rating. Treat popular weightings as approximations.
- ; revised only when page facts or methodology change.
1. What IBD-style RS Rating usually means
In Investor's Business Daily (IBD) contexts, RS Rating (Relative Strength Rating) is commonly introduced as a roughly 1–99 score of a stock’s price performance versus its market. In William O’Neil’s CANSLIM, relative strength is a clue for “L (Leader or Laggard).”
Important: even when the label is “RS Rating,” the calculation can differ by provider. Books, apps, and blogs may share the name without sharing the universe or blending rules.
For the umbrella term relative strength and this site’s RPS vocabulary, see Relative strength (RS) and RPS.
2. Common weighting approximations and caveats
Growth / CANSLIM blogs often explain IBD-style RS Rating with an approximation like:
- Windows: 63 / 126 / 189 / 252 day performance
- Weights: 0.4 / 0.2 / 0.2 / 0.2
- Then map the blended result to a 1–99 rating inside the universe
This ratio is a widely circulated approximation. IBD’s official detail is partly unpublished and may differ. This site does not reproduce or guarantee IBD numbers. Cite it as an approximation, not as the official formula.
Compressing windows into one score can mix a short spike with long stability—handy sometimes, opaque when you need to know which window is driving the print.
3. What multi-period RPS means here
RPS Stock’s RPS (Relative Price Strength) is the percentile of window price performance among the valid sample on the same market and observation date. See What is RPS? for the full definition.
| Label | Window idea | Research reading (descriptive) |
|---|---|---|
| RPS20 | ~20 trading days | Near-term relative momentum |
| RPS50 | ~50 trading days | Shorter medium-term relative place |
| RPS90 | ~90 trading days | Medium-term relative place |
| RPS120 | ~120 trading days | Roughly half-year relative place (common research filter) |
| RPS250 | ~250 trading days | Longer-term relative place |
Example: RPS120 = 85 means “on that date and window, ahead of about 85% of the valid sample”—not “price rose 85%.” For alignment / divergence across windows, continue in How to read RPS20/50/90/120/250.
4. Comparison table: one score vs period percentiles
| Angle | IBD-style RS Rating (typical description) | RPS Stock RPS |
|---|---|---|
| Output | Often one blended score | Per-window percentiles side by side |
| Windows | Weighted into one number | Short-to-long shown separately—easier to see alignment or divergence |
| Transparency | Official detail partly unpublished | Framed as in-market return → rank → percentile |
| Confusion risk | “RS” alone mixes with RSI | Labeled RPS; separated in RPS vs RSI |
| Boundary | Study clue for relative strength | Same: research rank. Not trade advice |
5. Checklist before comparing numbers
If another site shows RS 90 but our RPS looks different, check:
- Same market? Japan ranks and US ranks are not mixable.
- Same observation date? Ranks can change daily.
- Similar window definition? A blended score ≠ RPS50 alone.
- Similar valid sample? Listings, gaps, and calculability shift the universe.
- Not turned into advice? A high print is a history note, not an entry order.
For CANSLIM context (relative strength as one research filter), also read CANSLIM stock screening guide.
6. Frequently asked questions (FAQ)
Are IBD’s RS Rating and this site’s RPS the same?
No. Both deal with relative price strength inside a market, but the output differs. IBD-style write-ups often blend windows into one 1–99 score; this site shows separate in-market percentiles for RPS20, 50, 90, 120, and 250.
Is the 63/126/189/252 × 0.4/0.2/0.2/0.2 formula official?
It is a commonly cited approximation in public write-ups. IBD’s proprietary detail is partly unpublished and may differ. This site does not reproduce or guarantee that formula.
Does RS Rating 90 mean the same as RPS90?
No. Similar-looking numbers are not equivalent. RS Rating depends on a provider’s blend; this site’s RPS90 is the in-market percentile for an ~90-trading-day window. Compare only with aligned market, date, and window.
Why show separate periods?
To observe whether short and long strength align (resonance) or diverge. That is a descriptive research view—not a signal definition.
For CANSLIM’s “L,” which should I use?
O’Neil’s CANSLIM treats relative strength as a clue for “L” (Leader or Laggard). Period RPS can serve as a research filter here, but it is not a substitute for the full CANSLIM framework or investment advice. Related: CANSLIM strategy guide.
Can I match another service’s RS score numerically?
Usually not. Different universes, calendars, close definitions, gap handling, and refresh timing shift ranks. When citing, keep market, window, observation date, and valid sample together.
Research-screen with period RPS on Japan stocks
Sort TSE names by RPS20–250. Figures summarize past in-market ranks—not investment advice or trade recommendations.
Open Japan RPS rankingsRelated pages
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