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Order Types
Marketable vs Non-Marketable Orders, Explained
“Marketable” is the word that explains why one limit order fills instantly and another sits there all day.
NoVo Options Trading · 2026
A marketable order can fill immediately against existing liquidity; a non-marketable order rests in the book waiting for a counterparty. The distinction explains why some orders fill instantly and others wait.
What makes an order marketable
An order is marketable if its price crosses the current market — a buy at or above the ask, or a sell at or below the bid. It meets existing resting orders and fills right away. A market order is always marketable; a marketable limit is a limit priced to fill now.
Non-marketable (resting) orders
A non-marketable order — a buy limit below the ask, or a sell limit above the bid — doesn’t cross the market, so it rests in the order book as a bid or offer, waiting for someone to trade against it. A mid-price order is typically non-marketable (it waits for a fill at the mid). It provides liquidity rather than taking it.
Marketable = “I’ll take what’s there now.” Non-marketable = “I’ll wait for my price.” That’s the whole difference between an instant fill and a resting order.
The takeaway
Marketable orders prioritize speed (take liquidity); non-marketable orders prioritize price (provide liquidity, save the spread). Scalpers balance the two based on whether speed or price matters more on a given trade. It’s the same tradeoff at the heart of every market-vs-limit decision.
More on this: Idempotency: How Systems Avoid Duplicate Orders · Marketable Limit Orders: Speed Without a Blank Check
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NoVo is a software tool for market analysis and for executing trades you initiate, not financial advice. This article is general education, not investment advice. Options trading involves substantial risk of loss, up to and including your entire capital. NoVo makes no guarantee of profit, win rate, or performance, and past results do not predict future outcomes. You are responsible for your own broker account, configuration, and trading decisions.