Glossary

Stranded call

A call that stays ungraded because its exact session price bar is missing — excluded from precision, never mis-graded.

Grading requires the price bar dated exactly the call's session. When that bar is unavailable (a data-vendor gap, a halted listing), the call is left ungraded and surfaced as stranded instead of being matched to a neighboring day.

Stranded calls are excluded from precision — a deliberate choice: a slightly smaller denominator is better than a silently wrong grade.

Related: Graded call · Open-to-close grading

Full grading rules: methodology.