Market Orders vs. Limit Orders for Options
Why limit orders are essential for options trading. Compare market and limit orders with practical examples and tips for better fills.
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Quick Overview
Market orders execute immediately at the best available price. Limit orders execute only at your specified price or better. For options trading, limit orders are not just preferred — they are essential. Market orders on options can cost you significantly due to wide bid-ask spreads.
Side-by-Side Comparison
| Factor | Market Order | Limit Order |
|---|---|---|
| Execution | Immediate | Only at your price or better |
| Price guarantee | No — you get whatever price is available | Yes — you set the maximum/minimum |
| Speed | Fastest | May not fill immediately |
| Risk of bad fill | High on options | None — you control the price |
| Best for | Highly liquid stocks (not options) | All options trades |
| Fill certainty | 100% (but at what price?) | Not guaranteed |
Why Market Orders Are Dangerous for Options
Options typically have wider bid-ask spreads than stocks. A stock might have a $0.01 spread, but an option on that same stock might have a $0.10-$0.50 spread. On a multi-leg strategy (iron condor = 4 legs), the spread compounds.
Example of the damage: An iron condor has these individual option prices:
- Leg 1: Bid $1.20 / Ask $1.30
- Leg 2: Bid $0.50 / Ask $0.60
- Leg 3: Bid $0.80 / Ask $0.90
- Leg 4: Bid $0.30 / Ask $0.40
Market order: You sell at all the bids and buy at all the asks. Slippage: $0.40 total across 4 legs = $40 per contract.
Limit order at mid-price: You might get filled at $0.20 better overall = $20 saved per contract.
On 5 contracts, that is a $100 difference. Over 50 trades per year, you could save $1,000+ just by using limit orders.
How to Use Limit Orders for Options
- Find the mid-price. Most platforms show the "natural" price (bid for selling, ask for buying) and the "mid" price. Start at the mid.
- Place your order at the mid-price. This is your opening bid for a fill.
- Wait 30-60 seconds. If it does not fill, adjust by $0.01-$0.05 toward the natural price.
- Repeat. Keep adjusting until you get filled. Do not jump straight to the natural price.
- For urgent trades, place the limit a few cents worse than mid but still better than the natural price.
When Market Orders Are Acceptable
Almost never for options. The only exception is when you absolutely must exit a position immediately and liquidity is excellent:
- Closing a position on SPY options during normal hours (very tight spreads)
- Emergency exit during a crash when getting out matters more than price
- Single-leg options on the most liquid stocks with $0.01 spreads
Even in these cases, a limit order 1-2 cents from the market will likely fill instantly and save you money.
Tips for Better Fills
- Trade during market hours (9:30 AM - 4:00 PM ET). Spreads are widest at the open and close.
- Avoid trading in the first and last 15 minutes when spreads are widest.
- Stick to liquid underlyings. SPY, QQQ, AAPL, MSFT options have the best spreads.
- Use the "mid" price as your starting point and work outward.
- For multi-leg orders, send as a single order (not separate legs) to avoid leg risk.
Verdict
Always use limit orders for options. There is no debate. The bid-ask spread on options is too wide for market orders. Start at the mid-price and adjust incrementally. This one habit will save you hundreds or thousands of dollars per year and immediately improve your overall trading results.
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