Phrases & IdiomsPhrase guide

Customer Limit Order

Under current U.S. Regulation NMS, a “customer limit order” is an order to buy or sell an NMS stock at a specified price that is not for a broker or dealer account, and it includes an order transmitted by a broker or dealer on behalf of a customer. Keep this definition tied to NMS stock, a specified price, and the rule’s express inclusion of orders transmitted by a broker or dealer on behalf of a customer.

Quick answer

Under current U.S. Regulation NMS, a “customer limit order” is an order to buy or sell an NMS stock at a specified price that is not for a broker or dealer account, and it includes an order transmitted by a broker or dealer on behalf of a customer.

Key details

Canonical FormCustomer Limit Order
Core MeaningUnder current U.S. Regulation NMS, a “customer limit order” is an order to buy or sell an NMS stock at a specified price that is not for a broker or dealer account, and it includes an order transmitted by a broker or dealer on behalf of a customer.

Further guidance

History Boundary

Keep this definition tied to NMS stock, a specified price, and the rule’s express inclusion of orders transmitted by a broker or dealer on behalf of a customer.

Meaning

Under current U.S. Regulation NMS, a “customer limit order” is an order to buy or sell an NMS stock at a specified price that is not for a broker or dealer account, and it includes an order transmitted by a broker or dealer on behalf of a customer.

Usage Boundary

Keep this definition tied to NMS stock, a specified price, and the rule’s express inclusion of orders transmitted by a broker or dealer on behalf of a customer.

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.

  1. 17 CFR § 242.600 — NMS security designation and definitions (opens in a new tab)Legal Information Institute, Cornell Law School · Current e-CFR text for Regulation NMS definitions, including average midpoint and spread metrics, protected quotation and trade-through terms.

Related guides

Phrases & Idioms

Customer Order

Under current U.S. Regulation NMS, a “customer order” is an order to buy or sell an NMS security that is not for a broker or dealer account, subject to the rule’s stated market-value exclusions. Use the § 242.600 definition for rule-scoped analysis. The definition excludes orders meeting the stated market-value thresholds, so it should not be reduced to every order placed for a non-broker/dealer account.

Phrases & Idioms

Executable Stop Marketable Limit Order

Executable Stop Marketable Limit Order is a current Regulation NMS defined term. This guide preserves the rule-specific conditions instead of replacing them with informal trading shorthand.

Phrases & Idioms

Executable Stop Non-Marketable Limit Order

Executable Stop Non-Marketable Limit Order is a current Regulation NMS defined term. This guide preserves the rule-specific conditions instead of replacing them with informal trading shorthand.

Phrases & Idioms

Marketable Limit Order

Marketable Limit Order is a current Regulation NMS defined term. This guide preserves the buy/sell price tests and the rule’s determination-time conditions instead of using an informal trading shorthand.

Phrases & Idioms

Midpoint-or-Better Limit Order

Midpoint-or-Better Limit Order is a current Regulation NMS defined term. This guide keeps the non-marketable requirement, side-specific midpoint test, and determination-time conditions together.

Phrases & Idioms

Non-Marketable Limit Order

Under current U.S. Regulation NMS, a “non-marketable limit order” is any limit order other than a marketable limit order. Keep this definition tied to 17 CFR § 242.600; whether an order is marketable depends on the rule’s marketability framework and should not be generalized from the label alone.

Phrases & Idioms

Categorized by Order Size

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.

Phrases & Idioms

Categorized by Order Type

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.

Explore the topic