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Stock Order Types Overview

Jul 2, 2025

Overview

This lecture explains different stock order types—market, limit, and stop orders—how they work, and when investors might use them.

Placing an Order

  • Investors must choose an order type before buying or selling stocks or ETFs.
  • The order type instructs the broker on how to execute the trade.
  • The timing and price of execution depend on the chosen order type and market conditions.

Market Orders

  • A market order seeks immediate execution at the next available price.
  • Fast price changes may cause the actual execution price to differ from the quoted price.
  • Market orders prioritize speed over price and have a high chance of being filled.
  • Market orders can lead to undesired execution prices in volatile or illiquid markets.
  • Best used during trading hours and in highly liquid markets.

Limit Orders

  • A limit order specifies a price at which to buy or sell and only executes at that price or better.
  • Limit orders may not be filled if the market never reaches the specified price.
  • Used when investors have a target entry or exit price and are willing to wait.

Stop Orders

  • A stop order becomes active as a market or limit order when a set activation price is reached.
  • Used to buy when a price rises to a certain point (buy-stop) or to sell to limit loss (sell-stop).
  • Three types: stop-market (executes at next price after activation), stop-limit (executes at set price or better), and trailing stop (activation price trails market price by set amount).
  • Trailing stop orders automatically adjust the activation price as the stock price moves in the investor's favor.

Key Terms & Definitions

  • Order Type — Instructions to a broker on how to execute a trade.
  • Market Order — An order to buy or sell immediately at the best available price.
  • Limit Order — An order to buy or sell only at a specified price or better.
  • Stop Order — An order triggered when a stock reaches an activation price.
  • Stop-Market Order — A stop order that executes at the next available market price once triggered.
  • Stop-Limit Order — A stop order that executes at a specified (limit) price or better once triggered.
  • Trailing Stop Order — A stop order where the trigger price moves with the market price by a set amount.

Action Items / Next Steps

  • Review and decide which order type best fits your investment strategy before placing a trade.