Definitions
In plain terms
RASI builds a running path from the normalized McClellan oscillator, reducing the direct scale effect of changes in the number of advancing and declining issues.
Technical
After computing ratio-adjusted oscillator RAMO_t from r_t = 1000(A_t-D_t)/(A_t+D_t), update RASI_t = RASI_(t-1) + RAMO_t; this pilot uses a zero pre-output seed.
Scope
The ratio adjustment and cumulative relationship are methodology facts; the pilot's zero seed, zero-denominator result, initialization, precision, revisions, and missing-session behavior are explicit policies.
Formula
RASI_t = RASI_(t-1) + RAMO_t; RASI_pre-output = 0 in this pilotRASI_t=RASI_{t-1}+RAMO_t,\quad RASI_{\mathrm{pre}}=0\ \text{in this pilot}| Symbol | Meaning | Unit |
|---|---|---|
RASI_t | Current Ratio-Adjusted Summation Index | scaled breadth points |
RASI_(t-1) | Previous Ratio-Adjusted Summation Index | scaled breadth points |
RAMO_t | Ready Ratio-Adjusted McClellan Oscillator | scaled breadth points |
Output unit: scaled breadth points
Examples
- Starting from zero, ratio-adjusted oscillator values 8 and negative 3 produce RASI levels 8 and 5.
Common misconceptions
- Ratio adjustment reduces universe-scale sensitivity but does not make different universe definitions interchangeable.
Concept relationships
Broader concepts
Contrasts with
Derived from
Where this concept is used
Evidence and governance
- Ratio Adjusted Summation Index McClellan Financial Publications · first party methodology
Supports: preferred label, short definition, technical definition, formula, historical attribution, variant distinction
Limits: Historical interpretive thresholds are not universal trading rules; the source does not prescribe the package's evidence or software failure policies.
- Reviewed by
- fintech-builder-owner-approved
- Last reviewed
- 2026-07-26
- Next review
- 2027-07-26
- Record status
- published