A stock stop order is designed to trigger when the specified stop price is reached. According to the SEC’s Investor.gov guidance, it then becomes a market order. The resulting transaction therefore needs to be assessed using its actual execution record, rather than assuming that the trigger price is a guaranteed fill price. SEC Investor.gov: Types of orders
Follow the evidence
Trace how the event could reach markets, then inspect a competing explanation.
Compare explanations
Switch lenses to see what each account explains—and what remains uncertain.
WFN scenario: imagine a stock sell stop set at $50 and an eventual market-order fill at $48. The two-dollar difference describes the distance between the assumed trigger and the assumed execution. These invented prices demonstrate the mechanics. They are not an observed trade, a forecast of slippage or evidence that a particular broker mishandled an order. A useful investigation would first establish what triggered the order, when it became eligible for execution and what executable prices were available. A chart marking the stop level does not answer all three questions. The comparison needs the actual order terms and market record before assigning the difference to poor execution or ordinary price movement. Order choice involves a trade-off between price constraints and the possibility of execution. A stated price limit can constrain eligible prices without establishing that a willing counterparty will be available. A workflow that promises both a guaranteed price and a guaranteed immediate exit should be tested against its contractual terms rather than accepted from a simplified order label.
WFN scenario: imagine a stock sell stop set at $50 and an eventual market-order fill at $48. The two-dollar difference describes the distance between the assumed trigger and the assumed execution. These invented prices demonstrate the mechanics. They are not an observed trade, a forecast of slippage or evidence that a particular broker mishandled an order. A useful investigation would first establish what triggered the order, when it became eligible for execution and what executable prices were available. A chart marking the stop level does not answer all three questions. The comparison needs the actual order terms and market record before assigning the difference to poor execution or ordinary price movement. Order choice involves a trade-off between price constraints and the possibility of execution. A stated price limit can constrain eligible prices without establishing that a willing counterparty will be available. A workflow that promises both a guaranteed price and a guaranteed immediate exit should be tested against its contractual terms rather than accepted from a simplified order label.
Clear disclosures identify the applicable trigger convention, available order types and how the broker reports activation and execution. Customer confirmations should preserve the requested terms and actual fills. Those records allow the user to distinguish the original instruction from the market transaction that followed, instead of reconstructing the process from a single price marker. For a dispute, retain the order instruction, activation record and execution confirmation, then compare them using a consistent clock and the relevant market. This is an editorial evidence checklist, not a conclusion about any specific broker. The central point follows directly from the definitions: a trigger controls when an order becomes active, while its eventual execution requires separate evidence.
The definitions explain the price distinction
Investor.gov explains that market orders seek immediate execution but do not guarantee the execution price. The last-traded price is not necessarily the price available to a new market order. A stop order’s transition into that order type is therefore material to how its price protection should be described. SEC Investor.gov: Types of orders
The same guidance defines a limit order by its specified price or better: a buy limit can execute only at the limit or lower, and a sell limit only at the limit or higher. These are U.S. securities-order definitions. This article does not assume that every leveraged FX or OTC product uses an identical trigger rule or execution model. SEC Investor.gov: Types of orders
A hypothetical fill makes the distinction visible
WFN scenario: imagine a stock sell stop set at $50 and an eventual market-order fill at $48. The two-dollar difference describes the distance between the assumed trigger and the assumed execution. These invented prices demonstrate the mechanics. They are not an observed trade, a forecast of slippage or evidence that a particular broker mishandled an order.
A useful investigation would first establish what triggered the order, when it became eligible for execution and what executable prices were available. A chart marking the stop level does not answer all three questions. The comparison needs the actual order terms and market record before assigning the difference to poor execution or ordinary price movement.
Order choice involves a trade-off between price constraints and the possibility of execution. A stated price limit can constrain eligible prices without establishing that a willing counterparty will be available. A workflow that promises both a guaranteed price and a guaranteed immediate exit should be tested against its contractual terms rather than accepted from a simplified order label.
What a broker should make easy to understand
Clear disclosures identify the applicable trigger convention, available order types and how the broker reports activation and execution. Customer confirmations should preserve the requested terms and actual fills. Those records allow the user to distinguish the original instruction from the market transaction that followed, instead of reconstructing the process from a single price marker.
For a dispute, retain the order instruction, activation record and execution confirmation, then compare them using a consistent clock and the relevant market. This is an editorial evidence checklist, not a conclusion about any specific broker. The central point follows directly from the definitions: a trigger controls when an order becomes active, while its eventual execution requires separate evidence.