Partial Fills and How to Handle Them

You place an order for 1,000 shares. You get filled on 300. The rest just sits there while the market moves on without you.

Partial fills are awkward. You’re neither fully in nor fully out. You’re committed – but not completely. And how you handle this in-between state usually determines whether the trade works out or becomes a mess.

The good news? Partial fills usually mean you’re being patient with your price. You’re not chasing. That’s professional behavior. The bad news? Markets don’t wait around for you to get filled.

The Three Decisions You Face

Do you chase the remainder?

Your 300 shares filled at $50.00. The market is now $50.05. Do you:

There’s no universal answer. It depends on your conviction, the setup quality, and your position sizing rules.

How do you manage risk?

Your stop-loss was based on a 1,000-share position. You only have 300 shares filled. Do you:

How long do you wait?

Five minutes? Until end of day? Indefinitely? Without rules, you’ll either chase every partial or miss every bounce-back.

Learn With Titan: Real Decisions

Best Practices

Set time limits. If your order isn’t filled within your defined window, it cancels automatically. No emotion, no second-guessing.

Use IOC orders. Immediate-or-cancel orders fill whatever is available right now and cancel the rest. You get clarity: filled or not filled. No partial limbo.

Size for liquidity. If you consistently get partials, you’re trading too large for the instrument’s liquidity. Reduce size or pick more liquid markets.

Track your fill rate. What percentage of your orders fill completely? If it’s under 70%, your entry prices may be too conservative or your size too large.

Foundry. Built for traders who refuse to settle.