Categorized by Security is a current Regulation NMS defined term. This guide keeps the meaning limited to the report-level separation of orders by each included NMS stock.
ReviewedEvidence1 sourceSectionPhrases & Idioms
Quick answer
Under Regulation NMS, categorized by security means dividing orders into separate categories for each NMS stock included in the report.
Key details
Canonical FormCategorized by Security
Core MeaningDividing orders into separate categories for each NMS stock included in a report.
Further guidance
History Boundary
This page reflects the current reviewed 17 CFR § 242.600 definition and should be rechecked if Regulation NMS changes.
Meaning
17 CFR § 242.600 defines categorized by security as separating orders for each NMS stock included in a report.
Usage Boundary
This is a reporting-category definition, not a general instruction to classify securities by asset class or industry.
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.
Categorized by Order Size is a current Regulation NMS defined term. This guide keeps the reporting classification tied to the enumerated rule buckets rather than informal size labels.
Categorized by Order Type is a current Regulation NMS defined term. This guide preserves the rule’s specific order-type classification rather than replacing it with a simplified trading glossary.
Corporate Debt Security is a current Regulation ATS defined term. This guide preserves the rule-specific meaning and boundary instead of replacing it with informal market shorthand.
Debt Security Under Regulation ATS is a current Regulation ATS defined term. This guide preserves the rule-specific meaning and boundary instead of replacing it with informal market shorthand.
Exchange-Traded Security is a current Regulation NMS defined term. This guide preserves the specific U.S. securities-rule scope instead of substituting an ordinary-language meaning.
Foreign Security Under Regulation AC is a current Regulation AC defined term. This guide preserves the rule-specific meaning and boundary instead of replacing it with informal market shorthand.
Listed Equity Security is a current Regulation NMS defined term. This guide preserves the specific U.S. securities-rule scope instead of substituting an ordinary-language meaning.
Nasdaq Security is a current federal securities-regulation defined term. This guide preserves the rule-specific definition and boundaries instead of replacing it with informal market shorthand.
