STOP MARKET VS STOP LIMIT

今天為家人講解什麽是STOP LIMIT，沒有講很清楚， 後來發現AI講的非常簡潔而明確： 總結這裏 ：

I’ll explain this in the way a seasoned trader would explain risk control—then I’ll give you clear examples, common mistakes, and when not to use it.

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1. What a STOP-LIMIT order actually is

A Stop-Limit order has two prices:

1. Stop price → the trigger

2. Limit price → the worst price you are willing to accept

When the stock hits the stop price, your order activates
Once activated, it becomes a limit order, not a market order

That distinction is everything.

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2. STOP vs STOP-LIMIT (important difference)

Order Type	What happens after stop is hit
Stop-Market	Sells immediately at best available price
Stop-Limit	Sells only at your limit price or better

Translation:

• Stop-Market guarantees execution

• Stop-Limit guarantees price, not execution

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3. How to place a STOP-LIMIT (step by step)

Example: Protecting profit / limiting loss

You own 100 shares of XYZ at $100
Current price: $110

You want to exit if price weakens, but not panic-sell.

Set:

• Stop price: $105

• Limit price: $104

What happens:

• If XYZ falls to $105, the order activates

• It will sell only at $104 or better

• If price gaps down to $100 → no fill

This is controlled risk, not blind execution.

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4. When STOP-LIMIT is appropriate

Use STOP-LIMIT when:

Market is liquid
You want price discipline
You’re protecting profits, not avoiding catastrophe
You accept the risk of not being filled

Typical uses:

• Large-cap stocks (AAPL, MSFT, TSLA)

• Normal market hours

• Swing trading, position trading

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5. When STOP-LIMIT is dangerous

Do NOT use STOP-LIMIT when:

Highly volatile stocks
Earnings, CPI, Fed days
Low-liquidity small caps
Overnight gap risk

Why?
Price can jump over your limit, and you’ll still be holding the stock while it keeps falling.

This is how disciplined traders survive—but careless traders get trapped.

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6. Buy STOP-LIMIT (for breakout entries)

STOP-LIMIT isn’t only for selling.

Example: Breakout buy

Stock trades at $95
Resistance at $100

Set:

• Stop: $101

• Limit: $102

If price breaks above resistance:

• Order activates at $101

• Buys only if price ≤ $102

This prevents emotional chasing.

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7. Common mistakes (read this carefully)

Mistake #1: Stop and limit too close
→ Minor noise triggers order, no fill

Mistake #2: Using stop-limit for “must-exit” situations
→ You should use stop-market instead

Mistake #3: Forgetting gaps exist
→ Price can skip your limit entirely

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8. A trader’s rule of thumb

Stop-Market = safety belt
Stop-Limit = steering wheel

Professionals use both, but never confuse their purpose.

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9. One-sentence summary

A STOP-LIMIT order lets you exit or enter only at acceptable prices, but you must accept the risk that the trade may not happen at all.

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中文對照（精確理解）

STOP-LIMIT 訂單 = 觸發價 + 限價

• 觸發價（Stop）：啟動訂單

• 限價（Limit）：你能接受的最差成交價

觸發後變成 限價單，不保證成交
保證價格，但不保證賣得出去

記住一句話：
Stop-Market 保命，Stop-Limit 保紀律

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If you’d like, I can also:

• Help you choose stop distance based on volatility

• Compare STOP-LIMIT vs TRAILING STOP

• Show how professionals place stops on TSLA / NVDA / ETFs

Just tell me which direction you want to go.