Understanding Order Types — Market, Limit, SL and More
Market, limit, stop-loss, OCO — the order type you choose decides how your trade fills. Here’s a clear rundown.
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The order type you choose controls how and at what price your trade executes. Using the right one avoids surprises. Here are the essentials.
The basic two
- Market order — buy/sell immediately at the best available price. Guarantees execution, not price; fine for liquid stocks, risky in illiquid ones (you can pay a lot via slippage).
- Limit order — buy/sell only at your specified price or better. Guarantees price, not execution; may not fill if the market doesn’t reach it.
Stop and conditional orders
- Stop-loss — triggers an order when a price level is hit, to cap losses or protect gains.
- OCO (One-Cancels-Other) — place a target and a stop together; whichever triggers first cancels the other.
- GTT — a long-validity trigger order that sits until your price is hit.
Order modifiers
- IOC (Immediate-or-Cancel) — fill whatever it can instantly, cancel the rest.
- Disclosed quantity — show only part of a large order to the market at a time, to reduce impact.
Choosing wisely
- Liquid stock, want certainty of execution → market order.
- Want a specific price / illiquid stock → limit order.
- Protecting a position → stop-loss (prefer market-type for protection).
- Set-and-forget entry/exit → GTT.
Matching the order type to your intent — speed vs price, protection vs entry — is a basic but important trading skill. Education only, not a recommendation.
