Order Types for Options
Introduction: Execution Is Everything
Knowing which order type to use is critical for options trading success. Wrong order types lead to bad fills, missed trades, or unintended partial fills. Understanding market orders, limit orders, stop orders, and advanced order types ensures you execute trades exactly as intended.
Market Orders: The Danger Zone
A market order executes immediately at the best available price. For stocks, this is usually fine. For options, this is dangerous.
Why Market Orders Are Bad for Options: Options have wide spreads. If bid is $5.00 and ask is $5.25, a market buy order gets filled at $5.25. But the true fair value might be $5.12. You just gave up $0.13 per share ($13 per contract) to market makers.
• Market order to buy: Filled at $5.25 (the ask)
• Limit order at $5.12: Might not fill immediately, but if it does, you saved $0.13
• On 10 contracts, that's $130 saved. Over 100 trades, that's $13,000 saved.
When Market Orders Are OK: During liquid hours (9:30 AM - 4:00 PM ET) on highly liquid options (Apple, Tesla, etc.) where spreads are penny-wide ($0.01). Even then, use limit orders at the midpoint.
Limit Orders: The Professional Standard
A limit order specifies the maximum price you'll pay (when buying) or minimum you'll accept (when selling). It might not fill immediately, but you control your price.
Buying Example: Bid $5.00, Ask $5.25. You submit a limit buy order at $5.10. Your order sits until either: (1) the price drops to $5.10 or better, or (2) your order expires. You won't overpay.
Selling Example: Bid $5.00, Ask $5.25. You submit a limit sell order at $5.15. Your order sells when price reaches $5.15 or better. You won't undersell.
Advantages: Price control, no slippage surprises, captures value.
Disadvantage: Might not fill if price doesn't reach your limit.
Pro Tip - Split the Spread: If bid is $5.00 and ask is $5.25, bid $5.12-5.15. You've split the spread. Odds of fill are decent, and if filled, you've saved $0.10-0.13 per share.
Stop Orders: The Risk Limiter
A stop order becomes a market order once the price reaches your stop price. Used to limit losses on existing positions.
Example: You own a call you bought for $5.00. It's now worth $6.00. You set a stop at $4.50, meaning if the price drops to $4.50, your position automatically sells at market. This limits your loss.
Danger: Stop orders become market orders, exposing you to slippage. In a crash, your stop at $4.50 might execute at $3.50 because that's the market price when triggered.
Better Alternative - Stop-Limit Orders: Combine stop and limit. Set stop at $4.50 and limit at $4.40. Once price hits $4.50, a limit order is placed at $4.40 (won't go lower). Better protection but might not fill if price gaps through.
Stop-Limit Orders: The Smart Risk Management Tool
Stop-limit orders are stop orders that execute as limit orders. They provide more control than pure stop orders.
Stop-Limit: Stop at $5.50, Limit at $5.40
• If price drops to $5.50, a limit order at $5.40 is placed
• If price reaches $5.40, order fills
• If price gaps to $5.00, order doesn't fill (protection), but you still own the position
Versus:
Pure Stop at $5.50: Executes at market, might fill at $5.00 in a crash.
GTC vs Day Orders
Day Order: Valid for today only. Expires at market close if not filled. Default for most brokers.
GTC (Good Till Canceled): Remains active until filled or you cancel it. Can last days, weeks, or months.
When to Use GTC: Setting up a systematic exit (e.g., "sell my long call at $8.00"). It stays active until filled or canceled. Professional traders use these for income management.
Risk: Forgetting about GTC orders. They silently execute weeks later. Review all open orders regularly.
Fill-or-Kill (FOK) and All-or-None (AON) Orders
Fill-or-Kill: Execute immediately in full or cancel. Used by traders wanting immediate execution of an entire block or nothing. If you want 5 contracts and can only get 3, the order cancels.
All-or-None: Similar but more patient. Must fill 100% of the order, but it sits longer waiting for a full fill.
Use Case: Spreading (buying one strike, selling another). You want both legs to execute, not just one.
Multi-Leg Order Types (Spreads)
Professional options traders often use spread orders—buying one strike and selling another simultaneously as a single order.
Buy $100 call (ask $3.00)
Sell $105 call (bid $1.50)
Single spread order: Buy 100 call / Sell 105 call at net $1.50 (credit)
Rather than two separate market orders (exposing you to slippage twice), you submit one spread order with a single limit price, executing both legs simultaneously.
Common Order Type Mistakes
- Market orders on illiquid options: Results in horrible fills. Use limit orders.
- Forgetting about GTC orders: They execute weeks later unexpectedly. Track them.
- Stop orders in volatile markets: Price gaps through stops, executing at bad prices. Use stop-limit instead.
- Not understanding spread orders: Separately buying/selling legs leads to partial fills. Use spread orders.
- Leaving orders overnight: Pre-market news can cause gaps. Cancel orders or use day orders.
Summary: Order Type Mastery
The right order type ensures you get your intended execution at your intended price. Use limit orders for normal trades. Use stop-limit orders for risk management. Use spread orders for multi-leg strategies. Use GTC sparingly and track them. Avoid market orders on options. Master order types and you'll save thousands in slippage and bad fills over your trading career.