Market Orders

Start here because every other order in this unit builds on the market order. A plain stop and a Market-if-Touched order both become market orders when triggered, so they inherit its exact behavior.

What a Market Order Is

A market order is the most basic instruction a trader can give: fill me now, at whatever the market is offering.

• Market order: an order to buy or sell a futures contract immediately at the best price currently available. It has no price condition attached.
• Fills right away: because it accepts whatever the market offers, a market order is filled as soon as it reaches the exchange, as long as there is a counterparty to trade with. It goes to the front of the line for a fill.

Guarantees a Fill, Not a Price

This is the single most important fact in the unit, because so many other order types inherit it.

• Execution is (essentially) guaranteed; price is not: a market order's whole purpose is certainty of execution. The trade-off is that the trader accepts the prevailing price, which may differ from the last price they saw on screen.
• Slippage in thin or fast markets: when the bid-ask spread is wide and volume is low, a buyer can get filled at a higher price and a seller at a lower price than expected. The wider the spread and the faster the move, the more the fill can drift from the quote on screen.

Think of it this way: a market order is like walking up to a busy ticket counter and saying "one ticket, whatever the going rate is, right now." You are guaranteed to walk away with a ticket, but you have handed the seller the power to set the price. If the line is calm and prices are steady, you pay about what you expected. If demand is surging, you still get your ticket, but you might pay more than the price posted a minute ago. Certainty of getting in, uncertainty of the exact cost, is the whole bargain.

Exam Tip: Gotchas

• A market order guarantees a fill, not a price. If an answer says a market order "locks in" a specific price, it is wrong. Every other trap in this unit builds on this fact.

Market Order With Protection

Some electronic markets add a guardrail so a market order cannot fill at a wildly bad price.

• Market with protection: on some electronic markets, a market order fills only within a pre-defined range (a set number of protection points off the best opposite price). This stops a fill at an extreme price during a violent move.
• The core idea is unchanged: even with protection, you get a fill, not a promised price. The protection simply caps how far the fill can stray, and any unfilled portion rests as a limit at the protection boundary rather than chasing the market to an extreme.

Exam Tip: Gotchas

• "Market with protection" still guarantees a fill, not a price. The protection range only prevents fills at extreme prices. It does not turn a market order into a promise of one specific price, so treat it as a market order with a safety rail, not a limit order.