Order Types Glossary: Market, Limit, Stop, Stop-Limit, Trailing, OCO, Bracket

Order type choice determines fill probability, slippage, and risk exposure — sometimes more than the setup itself. A market order through earnings can lose in seconds what a limit order would have protected. This glossary covers every core order type with trigger mechanics, use cases, and the exact moments when each one saves or costs you money.

Core Concepts: Seven Order Types, Seven Behaviors

A Market Order fills immediately at the best available price. No price guarantee. Use only in liquid markets and when speed matters more than price. In thin order books, a market order for 1 BTC can move price 0.3–0.8% — that slippage is real cost.

A Limit Order specifies a maximum buy price or minimum sell price. It rests in the book until filled or cancelled. Two risks: non-fill (price never reaches) and adverse selection (you get filled exactly when price keeps going against you). Use for entries at defined levels.

A Stop (Stop-Loss) Order is a market order triggered when price crosses a stop level. It sells below the stop for longs. It guarantees execution, not price — a gap through your stop fills at the next available price, sometimes 2–5% worse.

A Stop-Limit Order combines a trigger price with a limit price. After the trigger fires, the order becomes a limit at the specified price. It protects against bad fills in fast markets but introduces non-execution risk: if price gaps past the limit, the order never fills and your loss keeps running. Set the limit 0.10–0.25% beyond the stop on longs.

A Trailing Stop follows price by a fixed distance or percentage. A $100 trailing stop on a long at $1,500 stays at $1,400; if price rises to $1,600, the stop trails up to $1,500. It locks profit while letting winners run. Use on trends; avoid in chop, where it gets wicked out repeatedly.

OCO (One-Cancels-the-Other) links two orders: when one fills, the other cancels. The standard pattern is a take-profit limit above entry and a stop-loss below. Use for breakout setups where price will resolve up or down but not both.

A Bracket Order is a complete trade package: entry order, profit target, and stop-loss placed together. The bracket auto-cancels the opposing leg when one side fills. Useful for systematic strategies — define risk (R) and reward before the trade is live.

Concrete example: a long at $100 with a bracket — target $105 (+5%), stop $97 (−3%). Risk/reward is 1.67:1. If price hits $105 first, the stop cancels automatically; if it hits $97 first, the target cancels. No manual management, no "hope it bounces" decisions.

Practical Application: Selecting and Configuring Orders

Step 1 — Match order type to market condition and intent.

Order type	Fill guarantee	Price guarantee	Best for	Risk
Market	Yes	No	Liquid markets, speed priority	Slippage in thin books
Limit	No	Yes	Defined entry/exit levels	Non-fill
Stop	Yes	No	Risk control, must-exit	Gap fills far worse
Stop-limit	No	Yes (range)	Fast markets, avoid bad fills	Non-execution on gap
Trailing	Yes	No (trails)	Trending markets	Whipsaw in chop
OCO	Conditional	Mixed	Breakout setups	One leg orphaned if illiquid
Bracket	Conditional	Mixed	Systematic strategies	Requires both legs set pre-entry

Step 2 — Set trailing stop distance by ATR. For a 1.5× ATR trailing stop on a stock with 14-day ATR of $2.00, set the trail at $3.00. Too tight (0.5× ATR) gets wicked out in normal noise; too loose (3× ATR) gives back too much profit.

Step 3 — Configure stop-limits with a buffer. On a long at $100 with a $95 stop, set the limit at $94.75 (0.25% below). This allows fill within a normal gap but rejects catastrophic fills. Never set the limit at the exact stop price — that guarantees non-fill on any gap.

Step 4 — Use brackets for every systematic trade. Pre-define risk (R) and reward before entry; the bracket enforces discipline and removes the temptation to widen a stop or hold for "just a bit more."

Order configuration checklist:

• Order type matched to market liquidity
• Stop distance set to ATR multiple (1.5–2×), not arbitrary
• Stop-limit buffer 0.10–0.25% beyond trigger
• Bracket target/stop set before entry, R:R ≥ 1.5:1
• No stop-limits on positions held through earnings or overnight gaps

Common Mistakes

Mistake 1: Using a stop-limit on an overnight hold through earnings. A gap past the limit means the order never fills and the loss runs uncontrolled. Correction: use a plain stop (market) for must-exit risk, or exit before the close. Execution risk beats price risk when a gap means ruin.

Mistake 2: Setting a trailing stop too tight in choppy markets. A 0.5× ATR trail gets wicked out repeatedly, locking in small losses that compound. Correction: use 1.5–2× ATR for trailing stops; in chop, switch to fixed targets instead of trailing.

Mistake 3: Using market orders in pre-market or after-hours. Spreads widen 3–10x and market orders slip badly. Correction: use limit orders only outside regular hours; if you cannot get a fill at your price, wait for liquidity.

Advanced Tips

For breakout setups, OCO brackets let you straddle a level — buy stop above, sell stop below — and let the market choose direction. Pair order-type discipline with a journal at /journal to track fill quality by order type; patterns emerge within 50 trades. Test every new order configuration on /paper before live deployment. The cost model at /tools helps quantify how slippage by order type erodes edge over 100 trades.

Summary

Order type is execution strategy, not a technicality. Market for speed in liquid names, limit for defined levels, stop for must-exit risk, trailing for trends, OCO and bracket for systematic setups. Never use stop-limits where a gap means ruin. Match the order to the market condition, set stops by ATR, and let brackets enforce discipline — fill quality over 100 trades is what keeps an edge intact.