Author: 分析师 卢明宇
After a partial close, the remaining position volume changes, but the stop-loss price does not necessarily change automatically. The MetaTrader 5 explanation of trading concepts states that a partial-close order does not change the existing position's Stop Loss or Take Profit. A separate modification is needed to adjust those levels. When reviewing the trade, record realized profit or loss, the remaining position's exposure at the original stop, charges and execution differences separately. A reduction in lots does not mean that every risk falls by the same proportion.
Separate how much was closed from where the stop is set
Suppose a gold long position was opened at USD 2320 per ounce, with an initial stop at USD 2310 per ounce and a volume of 1.0 lot. No specific product contract size is assumed. Let K represent the profit-or-loss factor for a USD 1-per-ounce price change on 1 lot, expressed in the account currency. The example illustrates the relationship only.
When the price reaches USD 2330 per ounce, 0.4 lot is closed, leaving 0.6 lot. If no stop-modification request is submitted, the stop remains at 2310. Closing part of the position does not automatically move it to a new price. MetaTrader 5 also explains that each partial-close deal can be linked to the same position history through its position ticket, making volume changes and subsequent actions easier to check.
Ignoring costs for this teaching example, the realized gross result is (2330−2320)×0.4×K＝4K. The remaining 0.6 lot still has a 10-dollar-per-ounce distance from the entry at 2320 to the stop at 2310. If execution occurs at 2310, the remaining gross loss is 10×0.6×K＝6K. Under that hypothetical exit, the total gross result is 4K−6K＝−2K. The actual result must also account for commissions, overnight charges and other costs, the spread, and whether the partial close and stop execute as expected. A stop price is not a guaranteed execution price.
| Item | Hypothetical value | Explanation |
|---|---|---|
| Initial long position | 1.0 lot, entry at 2320 | Prices are in USD per ounce, not current market quotes |
| Initial stop | 2310 | 10 dollars per ounce from entry |
| Partial close | 0.4 lot closed at 2330 | Realized gross result of 4K |
| Remaining position | 0.6 lot | Stop remains at 2310 unless modified |
| Remaining stop distance | 10 dollars per ounce | Gross loss of 6K if filled at the stop price, before costs |
The table illustrates volume multiplied by price distance. K cannot be derived from the quoted gold price alone. Contract size, minimum trade volume, quotation units, point value and account currency must all be checked against the actual product documents.
When should account risk be recalculated?
Recalculation has two meanings here. The first is a record check: after a partial close, multiply the remaining lots by the entry-to-stop distance and the product's profit-or-loss factor to establish the theoretical result if the remaining position exits at the specified price. The second is a management action: actively modifying the stop in response to account risk or the trading plan. A calculation check and a new order operation are different actions.
After the price rises from 2320 to 2330, a trader may want to move the stop on the remaining 0.6 lot up to 2320. Before doing so, check the platform's minimum stop distance, the relevant trigger quote and the order status. If the modification succeeds, the entry-to-stop distance becomes 0. This does not guarantee execution at 2320: slippage, spread changes or price gaps may still affect the fill. If the stop is raised to 2320.5, the distance above entry is 0.5 dollar per ounce. A fill at that price would produce a gross profit of 0.5×0.6×K＝0.3K on the remaining position. It should not simply be described as zero risk.
For a short position, the price direction is reversed. Suppose entry is 2320 and the stop is 2330. After a partial close, first confirm the remaining volume and the stop price. An absolute value can express the size of the distance, but the direction must be retained when calculating profit or loss. A stop above entry represents a planned loss for a short; a stop below entry represents a planned gross profit. Both should not be treated as losses.
Distinguish netting accounts from hedging accounts
MetaTrader 5 distinguishes netting from hedging position accounting. In netting mode, a symbol normally has one combined position, and an opposite deal can reduce, close or reverse it. In hedging mode, the same symbol can have multiple independent positions. After a partial close, whether the remainder belongs to the original position ticket or a separate position has been closed depends on the account's position-accounting system and the action taken.
A review should therefore record more than gold: 0.6 lot remaining. Keep the position ticket, deal ticket, closed volume, remaining Stop Loss and Take Profit, account mode and execution time. The official documentation assigns tickets to orders, deals and positions and uses them to trace how multiple deals affect one position. If the platform's volume differs from personal records, reconcile the tickets before inferring the state from a line on a chart.
Stop inheritance is different from a manual modification
A stop remaining unchanged after a partial close does not mean that the platform rejected a later modification. If another modification request is submitted, it may fail because of the price distance, trading session, quotation status or other product conditions. After a successful modification, read back the position's stop field and timestamp and match them to the log.
The MetaTrader 5 trading-operations documentation also distinguishes a server-executed Stop Loss from a terminal-executed Trailing Stop. Trailing Stop depends on the terminal running. When the terminal is closed, a stop already set may remain in place, but subsequent automatic adjustments do not continue. If Trailing Stop is enabled after a partial close, check the position it is attached to and the actual modification records. A moving line on the chart is not proof that the order was changed.
Record the risk before deciding whether to move the stop
After a partial close, use four checks: save the closing deal's volume, price and time; read back the remaining position, Stop Loss and Take Profit; calculate the result of an exit at the specified price using the actual product's profit-or-loss factor; and separately record whether the modification succeeded and what the eventual execution produced. The classroom article on stop distance and account risk distinguishes price distance from monetary exposure, while stop triggering and the actual execution price explains why a trigger does not guarantee a fixed fill.
A partial close reduces the remaining volume, but does not automatically remove margin, spread, gap or liquidity risk. If the remaining position stays open, the price may reach the original stop before a modification is completed. Insufficient margin may also lead to involuntary position reductions or forced liquidation. K, prices and times in the example are hypothetical and cannot be used to predict gold or silver returns.