Options Series is a current Regulation NMS defined term. This guide preserves the rule-specific definition and boundaries instead of replacing it with informal market shorthand.
ReviewedEvidence1 sourceSectionPhrases & Idioms
Quick answer
In Regulation NMS, an options series is the subset of contracts in an options class that share the specified contract terms.
Key details
Canonical FormOptions Series
Core MeaningUnder 17 CFR § 242.600, an options series consists of contracts in an options class that share the same unit of trade, expiration date, exercise price, and other terms or conditions.
Further guidance
History Boundary
This page reflects the current reviewed 17 CFR § 242.600 definition and should be rechecked if Regulation NMS changes.
Meaning
Under 17 CFR § 242.600, an options series consists of contracts in an options class that share the same unit of trade, expiration date, exercise price, and other terms or conditions.
Usage Boundary
The term is narrower than options class and depends on matching contract terms such as unit of trade, expiration date, and exercise price.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
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