FTB-C000458 / Formula component

Strict-Lower Rank

Strict-Lower Rank counts only reference values strictly less than the current value when computing percent rank.

Also known asstrict-less-than rank

Definitions

In plain terms

Prior observations equal to the current return receive no partial or full lower-rank credit under this package.

Technical

The comparator, floating-point tolerance, window population, denominator, and missing values must be frozen.

Scope

Different midrank or less-than-or-equal conventions can produce different Connors RSI values.

Formula

Strict-lower percent rank = 100 * count(prior values < current) / N
LaTeX: PR_t=100\frac{\#\{r_i<r_t\}}{N}
SymbolMeaningUnit
r_iprior reference returnpercent
r_tcurrent returnpercent
Nnumber of prior reference returnsobservations

Output unit: percent

Examples

  • A governed lesson calculates or identifies Strict-Lower Rank only after its inputs, window, state, scale, and edge cases are declared.

Common misconceptions

  • Different midrank or less-than-or-equal conventions can produce different Connors RSI values.

Concept relationships

Where this concept is used

Evidence and governance

  1. Connors Relative Strength Index Implementation QuantConnect Lean · first party technical publication

    Supports: preferred label, short definition, technical definition, formula

    Limits: The moving branch can change; exact parity requires a pinned revision and an explicit tie and ranking-window contract.

Reviewed by
fintech-builder-batch-008
Last reviewed
2026-07-29
Next review
2027-07-29
Record status
published