Market, Limit, Stop & Stop-Limit Orders
Investors must specify how a trade should be carried out when they place an order to buy or sell a security. This chapter covers four common order types:
- Market orders
- Limit orders
- Stop orders
- Stop limit orders
⚠️ MASTER TABLE — all order types (guaranteed exam topic)
| Order type | Placed relative to current market price | What triggers / activates it | What it guarantees |
|---|---|---|---|
| Market order | No price is specified at all — “A market order doesn’t include a price” | Nothing; “it executes at the next available market price” (often fills within seconds) | 🔑 Execution guaranteed, price NOT guaranteed |
| Limit order (general) | At a price better than the current market | Market reaching the specified price or better | 🔑 “limit orders guarantee that the trade will occur at a specific price or better. The trade-off is that execution is not guaranteed.” |
| Buy limit | ⬇️ Below the current market | “The order can execute once the stock trades at [limit] or lower” — executes when the price falls to or below the limit price | Price (or better), not execution |
| Sell limit | ⬆️ Above the current market | “The order can execute once the stock trades at [limit] or above” — executes when the price rises to or above the limit price | Price (or better), not execution |
| Stop order (general) | Away from the market in the loss direction | Two-step: Trigger (market reaches stop price) → Execution (becomes a market order, fills at next available price) | 🔑 Neither price nor execution guaranteed |
| Sell stop | ⬇️ Below the current market | “Sell stop orders trigger when the market price falls to the stop price or below” | Neither. After trigger it’s a market order — “could be above, at, or below the stop price” |
| Buy stop | ⬆️ Above the current market | “Buy stop orders elect (trigger) when the market price rises to the stop price or above” | Neither |
| Sell stop limit | Stop ⬇️ below the market | Triggers when market falls to or below the stop price; then becomes a sell limit that executes only at the limit price or higher | After trigger, price is guaranteed (limit), execution is not |
| Buy stop limit | Stop ⬆️ above the market | Triggers when market rises to or above the stop price; then becomes a buy limit that executes only at the limit price or lower | After trigger, price is guaranteed (limit), execution is not |
🔑 Placement summary (from the chapter’s Key points)
| Orders placed above the current market | Orders placed below the current market |
|---|---|
| Sell limits | Buy limits |
| Buy stops | Sell stops |
🔑 SLOBS / BLISS memory aid
“Many people use ‘SLOBS’ and ‘BLISS’ to remember the direction of stops and limits.”
- Sell Limits / O / Buy Stops — placed above the market
- Buy Limits / I / Sell Stops — placed below the market
- ⚠️ “the ‘O’ in ‘SLOBS’ and the ‘I’ in ‘BLISS’ are only there to make an acronym.”
Using the visual:
- Sell limits are above the line, meaning they execute when the market price is at or above the limit price.
- Buy limits are below the line, meaning they execute when the market price is at or below the limit price.
Stop orders don’t execute immediately. They trigger at a specific market price:
- Sell stops trigger when the market price is at or below the stop price.
- Buy stops trigger when the market price is at or above the stop price.
“The following visual is useful to memorize and rewrite on your scratch paper during this material.”
Market orders
- Market orders are used when the main goal is speed.
- A market order doesn’t include a price. Instead, it executes at the next available market price. In practice, market orders often fill within seconds.
🔑 When you place a market order:
- Execution is guaranteed (the trade will happen).
- Price is not guaranteed (you don’t control the exact fill price).
“That lack of price control is especially important when the market is closed.”
Worked examples (verbatim)
Assume an investor places a market order to buy stock in a pharmaceutical company after the market closes when the stock price is $50. A few hours later, a news article about the company curing cancer is published, and the stock price skyrockets to open at $200 the next day. If the investor’s order is still in place at the market open, they will pay 4x the amount they likely expected to pay. Although scenarios like this are relatively rare, it’s common for stock prices to fluctuate overnight.
It can also move against a seller. Using the same $50 stock, a customer who places a market order to sell after the close could wake up to a much lower opening price and end up selling far below what they expected. For this reason, investors generally avoid placing market orders overnight.
Order duration
| Duration type | Definition |
|---|---|
| Day order | > “Day orders are canceled at the end of the day if they remain unexecuted.” |
| Good-til-canceled (GTC) | > “GTC orders are only canceled once the customer requests, which could be days, weeks, or months.” |
- 🔑 “Market orders are designed to execute immediately, so broker-dealers typically default them to day orders.” (Key points: “Always day orders”)
Limit orders
- Limit orders are used when price control matters.
- 🔑 “Unlike market orders, limit orders guarantee that the trade will occur at a specific price or better. The trade-off is that execution is not guaranteed.”
- ⚠️ “If a price is specified and nothing else is added, it’s assumed to be a limit order (even if the word ‘limit’ isn’t written).”
Buy limit — worked example (verbatim)
Buy 100 shares of ABC stock @ $50 limit
Trading tape: $51.03… $51.01… $49.99… $49.98… $50.01…
The investor wants to buy 100 shares of ABC stock but won’t pay more than $50 per share. The order can execute once the stock trades at $50 or lower.
The trading tape shows available prices for the security from left to right. The first price that meets the condition ($50 or lower) is $49.99, so the order fills at $49.99.
Investors use limit orders to seek better prices. For example, if the stock is currently $55, a customer could place a buy limit at $50. If the price falls and the order executes, they buy $5 cheaper per share. If the price never falls to $50 or lower, the order won’t execute.
Buy limit — practice question (verbatim)
Buy 100 shares @ $75 limit
Trading tape: $75.02… $75.03… $74.97… $75.00… $75.01…
At what price does the order go through?
Answer = $74.97
Buy limit orders fill at the price specified or lower. $74.97 is the first price available that’s $75 or lower.
Sell limit — worked example (verbatim)
Sell 100 shares of XYZ stock @ $70
Trading tape: $69.95… $69.98… $69.99… $70.01… $69.99…
At what price does the order go through?
This is a sell limit order. The customer wants to sell 100 shares at $70 or higher. The order can execute once the stock trades at $70 or above. On the trading tape, the first price that meets that condition is $70.01, so the order fills at $70.01.
Sell limit — practice question (verbatim)
Sell 100 shares @ $30
Trading tape: $30.05… $30.02… $29.99… $29.97… $30.01…
At what price does the order go through?
Answer = $30.05
Sell limit orders fill at the price specified or higher. $30.05 is the first price available that’s $30 or higher.
Duration
Limit orders often take time to execute. Because of that, they can be placed as:
- Day orders (cancel at the end of the day if unexecuted), or
- GTC orders (remain open until executed or canceled by the customer).
Stop orders
- Stop orders, often called stop loss orders, can feel a bit “backward” at first:
- ⚠️ A buy stop triggers when the price rises.
- ⚠️ A sell stop triggers when the price falls.
- “Why buy higher or sell lower? Stop orders are commonly used to manage risk by automatically exiting a position once the market moves against you.”
🔑 The two-step process
| Step | What happens |
|---|---|
| 1. Trigger (elect) | “The order triggers when the market reaches the stop price.” |
| 2. Execution | “After triggering, the order becomes a market order and fills at the next available price.” |
Because a stop order turns into a market order after it triggers:
- Execution isn’t guaranteed (it only triggers if the stop price is reached).
- Price isn’t guaranteed (once triggered, it fills at the next available price, which could be above, at, or below the stop price).
Sell stop — worked example (verbatim)
Long 100 shares of ABC stock @ $50
Investor places a sell 100 shares of ABC stock @ $45 stop
Sell stop orders trigger when the market price falls to the stop price or below. When the order triggers (also called electing), it begins the process of executing.
In this example, the order triggers when the market price falls to $45 or below. The investor is using the stop to limit losses to about $5 per share.
Long 100 shares of ABC stock @ $50
Investor places a sell 100 shares of ABC stock @ $45 stop
Trading tape: $45.02… $45.01… $44.99… $44.97… $45.01…
Here, the order triggers at $44.99 (the first price at $45 or below). After triggering, it becomes a market order and executes at the next available price, $44.97.
Sell stop — practice question (verbatim)
An investor goes long 100 shares of stock @ $80. They place a sell 100 shares @ $78 stop order.
Trading tape: $79… $80… $78.50… $78… $79…
At what price will the order trigger? At what price will the order execute?
Trigger.= $78
Execute = $79
Sell stop orders trigger when the market price falls to or below the stop price. This order triggers at $78. After the trigger, the order executes at the next available price, which is $79.
Buy stop — worked example (verbatim)
- “Buy stop orders are also ‘stop loss’ orders, but for short stock positions.”
- “Investors with short positions use buy stops to limit losses if the stock price rises.”
Sell short 100 shares of ABC stock @ $80
Investor places a buy 100 shares of ABC stock @ $90 stop
Buy stop orders elect (trigger) when the market price rises to the stop price or above. In this example, the order elects when the market price rises to $90 or above. The investor is using the stop to cap losses on the short position.
Sell short 100 shares of ABC stock @ $80
Investor places a buy 100 shares of ABC stock @ $90 stop
Trading tape: $89.97… $89.99… $90.02… $90.01… $89.98…
The order triggers at $90.02 (the first price at $90 or above). After triggering, it becomes a market order and executes at the next available price, $90.01.
Buy stop — practice question (verbatim)
An investor goes short 100 shares of stock @ $20. They place a buy 100 shares @ $21 stop order.
Trading tape: $20.70… $20.90… $21. 10… $20.50… $20.85…
At what price will the order trigger? At what price will the order execute?
Trigger = $21.10
Execute = $20.50
Buy stop orders trigger when the market price rises to or above the stop price. This order triggers at $21.10. After the trigger, the order executes at the next available price, $20.50.
Duration
Like limit orders, stop orders can be day or GTC orders. If placed as a day order, the order is canceled if it remains unexecuted by the end of the day. If placed as a GTC order, the order stays open until executed or canceled by the investor.
Stop limit orders
- Stop limit orders combine features of stop orders and limit orders.
- 🔑 “A stop limit order is a stop order that becomes a limit order after it triggers (elects).”
⚠️ The key difference from a regular stop order is what happens after the trigger:
| Order | After triggering it becomes… |
|---|---|
| Stop order | a market order |
| Stop limit order | a limit order |
- “Stop limit orders are used for the same general purpose as stop orders (often to limit losses), but they’re especially useful when the investor wants more control over the execution price.”
- 🔑 “In case you were wondering, both the stop and the limit price are the same when only one price is specified.”
Sell stop limit — worked example (verbatim)
Long 100 shares of ABC stock @ $30
Investor places a sell 100 shares of ABC stock @ $25 stop $23 limit
To approach a sell stop limit order, focus on the stop first:
The sell stop triggers when the market falls to or below $25. After triggering, the order becomes a sell limit, which can execute only at $23 or higher.
Long 100 shares of ABC stock @ $30
Investor places a sell 100 shares of ABC stock @ $25 stop $23 limit
Trading tape: $25.03… $25.01… $24.99… $24.98… $24.95…
The order triggers at $24.99 (the first price at $25 or below). After triggering, it becomes a limit order and can execute as long as the market is $23 or higher. The next available price is $24.98, so the order executes there.
The limit portion protects the investor from selling below $23 per share.
Sell stop limit — practice question (verbatim)
An investor goes long 100 shares of stock @ $70. They place a sell 100 shares @ $65 stop limit order.
Trading tape: $65.10… $64.90… $64.95… $65.05… $64.85
At what price will the order trigger? At what price will the order execute?
Trigger = $64.90
Execute = $65.05
Sell stop limit orders trigger when the market price falls to or below the stop price. This order triggers at $64.90. After the trigger, the order executes when the market rises to $65 or higher. The order executes at $65.05.
Buy stop limit — worked example (verbatim)
Sell short 100 shares of ABC stock @ $70
Investor places a buy 100 shares of ABC stock @ $77 stop limit
Again, focus on the stop first:
The buy stop triggers when the market rises to $77 or higher. After triggering, the order becomes a buy limit, which can execute only at $77 or lower.
Sell short 100 shares of ABC stock @ $70
Investor places a buy 100 shares of ABC stock @ $77 stop limit
Trading tape: $76.95… $76.99… $77.02… $77.01… $76.98…
The order triggers at $77.02 (the first price at $77 or above). After triggering, it becomes a limit order and can execute as long as the market is $77 or lower. The first available price that meets that condition is $76.98, so the order executes there.
The limit portion ensures the customer won’t buy above $77 per share.
Buy stop limit — practice question (verbatim)
An investor goes short 100 shares of stock @ $25. They place a buy 100 shares @ $28 stop $29 limit order.
Trading tape: $27.97… $28.01… $28.09… $27.90… $27.50…
At what price will the order trigger? At what price will the order execute?
Trigger = $28.01
Execute = $28.09
Buy stop orders trigger when the market price rises to or above the stop price ($28). This order triggers at $28.01. After the trigger, the order executes if the market is at the limit price ($29) or below. The order executes at $28.09.
Duration
Just like limits and stops, stop limit orders can be day or GTC. If placed as a day order, the order will be canceled if it doesn’t execute by the end of the day. If placed as a GTC order, the order will stay open until executed or canceled by the investor.
Conclusion
“The key skill with order types is knowing what the market must do for an order to trigger or execute.”
Key points
Market orders
- Transaction request at the next possible price
- Guarantees execution, not price
- Always day orders
Day orders
- Cancelled at end of the day if not executed
GTC orders
- Cancelled when customer requests
Limit orders
- Seek better prices for investors
- Guarantee price, but not execution
- Day or GTC orders
Buy limit orders
- Execute when the price falls to or below the limit price
Sell limit orders
- Execute when the price rises to or above the limit price
Stop orders
- Typically utilized to “stop losses” on stock
- Do not guarantee price or execution
- Trigger (elect) first, then execute
- Become market orders after the trigger
- Day or GTC orders
Sell stop orders
- Trigger when the price falls to or below the stop price
Buy stop orders
- Trigger when the price rises to or above the stop price
Stop limit orders
- Normal stop orders up until the trigger
- After trigger, becomes a limit order
- Day or GTC orders
Orders placed above current market
- Sell limits
- Buy stops
Orders placed below current market
- Buy limits
- Sell stops
DNR (do not reduce) orders
- Never adjusted for cash dividends
Sources
Primary/official references for the material in this chapter. Every link was fetched and returned HTTP 200 on 2026-08-15.
| # | Source | Publisher |
|---|---|---|
| 1 | Understanding order types — market, limit, IOC, FOK, AON | SEC / Investor.gov |
| 2 | Stop, stop-limit and trailing stop orders | SEC / Investor.gov |
| 3 | Limit orders | SEC |
| 4 | Stop orders | SEC |
| 5 | Achievable Series 65 — chapter 2.9.4 | Achievable (course text) |