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Course Library · Lesson 3 of 6
Money · Guided lesson

Test a stop order through a price gap

About 14 minutes · 4 reading + 10 practice and checks
Time includes reading, practice, and questions. Extra videos or further study are optional.
See this course’s project requirements

A fictional stock-literacy file with a quote card, checked order and gap cases, an accessible OHLC chart, a pattern counterexample and a reconciled paper-trade ledger.

Keep your working files in your own notebook or software. Save a private description, checklist, and work link in My Proof.

What to include

  • A quote card with exact symbol, historical last price, best bid, best ask, spread, visible sizes and simulation limitations.
  • An order comparison showing executed quantity, unfilled quantity, gross cost, weighted fill price, fee and total cash cost.
  • A two-column gap comparison with trigger, resulting instruction, fill status, executed price, net cash and unsold shares.
  • An annotated original candle chart, exact matching data table and period-3 range/body/wick calculation.
  • A pattern note with numerical definitions, $49 three-period average, opposing continuations and a failed observed-support band.
  • A complete fictional stock-literacy file with quote card, order/gap comparisons, accessible OHLC chart, pattern counterexample and reconciled two-order ledger.

Review and revise

Use these criteria to check your work and choose what to improve.

  • Quote, order and ledger records use the exact supplied inputs, distinguish submitted/pending/filled states and reconcile all executed quantities.
  • Money calculations show units, fees and intermediate steps; cash and shares agree with an independent calculation.
  • The original chart has a matching table and labels; pattern notes retain contrary evidence and distinguish historical observations from forecasts.
  • All six lesson outputs and changed-input results are included, with fictional assumptions and untested real-world behavior stated accurately.
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Before you begin

The idea in everyday life

In a separate invented gap case, the paper learner already owns 10 shares. A sell stop is set at $49.50. The next recorded trade is $47.00, which triggers the stop under this case’s last-trade trigger rule. The next available buyer offers $47.00 for all 10 shares. No higher bid appears later in the exercise. One $1 fee applies to an executed order. Compare a sell stop with a sell stop-limit using stop $49.50 and limit $49.00. These are explicit exercise rules; actual brokers can use different trigger and timing policies.

The idea

A stop activates an instruction. A gap can skip prices; a limit can prevent a bad-priced fill while leaving the position unsold.

Follow along

Test a stop order through a price gap — worked paper practice

A stop activates an instruction. A gap can skip prices; a limit can prevent a bad-priced fill while leaving the position unsold.

In a separate invented gap case, the paper learner already owns 10 shares. A sell stop is set at $49.50. The next recorded trade is $47.00, which triggers the stop under this case’s last-trade trigger rule. The next available buyer offers $47.00 for all 10 shares. No higher bid appears later in the exercise. One $1 fee applies to an executed order. Compare a sell stop with a sell stop-limit using stop $49.50 and limit $49.00. These are explicit exercise rules; actual brokers can use different trigger and timing policies.

Separate fictional gap inputs

Paste at A1.

AFieldBSupplied value
Owned shares10
Sell stop ($)49.5
Next last trade ($)47
Next available bid ($)47
Shares at next bid10
Sell limit, stop-limit case ($)49
Fee for an executed order ($)1

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  1. 1. Check activation

    Compare next last trade $47 with sell-stop threshold $49.50.

    You should see: Triggered in this case because $47 is below $49.50.

    A trigger rule is separate from the price a buyer offers.

  2. 2. Execute the modeled sell stop

    After activation, use the supplied $47 bid for all 10 owned shares.

    You should see: 10 × $47 = $470 gross.

    A market instruction receives available prices; the stop is not a guaranteed fill price.

  3. 3. Reconcile cash and shares

    Subtract the one $1 fee and record the remaining share count.

    You should see: $469 net cash, 0 shares remaining.

    A trade record reconciles quantities as well as money.

  4. 4. Test the stop-limit price

    The stop-limit activates a $49 sell limit. Compare $47 bid with the required minimum.

    You should see: The bid fails the $49 minimum; 0 shares execute and all 10 remain owned.

    Price control can create nonexecution rather than a guaranteed sale.

  5. 5. State the limits

    Record the omitted broker rules and unknown next market move.

    You should see: No recovery, later fill or real account protection is established.

    The exercise demonstrates a failure mode, not an optimal trading rule.

Now change one thing

Changed gap: own 8 shares; a sell stop at $30 triggers when the next trade is $27. The supplied next bid is $27 for all 8, with one $1 fee. A separate stop-limit uses stop $30 / limit $29. Enter sell-stop net proceeds and stop-limit unfilled shares.

Your work

What to finish

A two-column gap comparison with trigger, resulting instruction, fill status, executed price, net cash and unsold shares.

Common mistake

Watch for this

Treating the words stop-loss as proof that every position can be sold at the selected threshold.

How can I tell I understand it?

Explain both the lower-priced market fill and the unsold stop-limit case without recommending an order for real money.

Try 3 questions

Quick knowledge check

Answer all 3 questions. Get at least 2 right and the lesson completes automatically.

Not yet passed

You’ll get an explanation for each answer. Signed in? Your results save to your account.

1A sell stop at $49.50 triggers at a $47 last trade; the supplied next bid is $47 for all 10 shares. With one $1 fee, what net cash does this case produce?
2A sell stop-limit activates a $49 minimum sale price while the only available bid is $47. What happens in this static case?
3Which conclusion exceeds what the fictional gap comparison demonstrates?
0 of 3 answeredApply the lesson to a short question, then review the explanation.
3
Finish this lesson

Pass the check. We’ll save the progress.

Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.

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Tools, templates, and lesson sources

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Sources and further reading

Explore the references behind this lesson.

SEC Investor.gov — Understanding Order Types
Source & access notes · checked 2026-10-01

Inspected market/limit, partial execution, stop triggers and stop-limit nonexecution; specific policies vary by broker.

Access: Public official page inspected with the web reader on 2026-10-01; no broker tools or real transactions operated.

Reuse: Concept references only. All prices, records, charts, worked examples, exercises and questions are original fictional LifeStarter material; no source diagram or exercise copied.

FINRA — Day-Trading Risk Disclosure, Rule 2270
Source & access notes · checked 2026-10-01

Inspected risks of loss and possible difficulty liquidating positions; no copied disclosure block or claim of FINRA approval.

Access: Public official page inspected with the web reader on 2026-10-01; no broker tools or real transactions operated.

Reuse: Concept references only. All prices, records, charts, worked examples, exercises and questions are original fictional LifeStarter material; no source diagram or exercise copied.

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