Stop Loss and Take Profit Explained

Neither a stop loss nor a take profitis a trade in its own right. Each is an exit instruction tied to one specific position: the stop loss closes it if the market reaches a level on the losing side, the take profit closes it at a level on the winning side. They can be set on the ticket when the position is opened or added afterwards — one without the other, both, or neither.

Once accepted, both levels are held on the broker’s trade server rather than in the platform. The terminal can be shut down, the computer switched off, the connection lost — the server keeps checking the position against its levels on every tick. And because the orders belong to the position, they end with it: close the trade manually, or let one level fire, and the other is cancelled automatically.

Every symbol is quoted twice — a bid the market pays you when you sell, and an askyou pay when you buy — and opening and closing a position sit on opposite sides of that quote. A long position is opened by buying at the ask and closed by selling at the bid, so its stop loss and take profit both watch the bid. A short is the reverse: opened at the bid, closed at the ask, so both of its levels watch the ask.

One practical consequence: MetaTrader charts draw the bid lineby default. A long position’s levels therefore behave exactly as the chart suggests, but a short’s levels respond to the ask, which sits a spread above the chart line. A short’s stop can fire during a moment of spread widening even though no candle ever touches the level — the level was hit, just by a price the chart was not drawing.

A stop loss promises an exit, not an exit price. When the relevant quote trades at or through the level, the server converts the order into a market close, and the fill is whatever price is available at that moment. In normal conditions that is the level itself or a price within a fraction of a pip of it. The exception is a gap: when no tradable prices exist between one quote and the next, the stop fills at the first price on the far side.

Consider a long NZD/USD position carrying a 0.60800 stop loss into a weekend. The pair closes on Friday at 0.60950, news lands on Saturday, and the first quote on Monday is 0.60550. The stop triggers on that first quote — there was nothing tradable in between — and the position closes 25 pips beyond its level. The order did not fail; it did exactly what a stop does, selling at the best price available once the level was passed. How far fills can travel from their levels, and how to measure it across an account, is the territory of the slippage guide.

A take profit is the mirror image in direction but not in logic. It is a limit-styleinstruction: the position closes at the level or at a better price, never at a worse one. A gap through a take profit works in your favour — a long with a take profit at 0.67300 that opens Monday at 0.67450 exits at the open, 15 pips better than requested.

What limit logic cannot promise is the exit itself. Price can miss the level by a fraction of a pip and reverse, leaving the order untouched, and in a very fast move the liquidity available at the level may not be enough to close the whole position the instant it is reached. The price guarantee is paid for with fill uncertainty.

For risk purposes, what matters is not the stop loss level but the distanceto it. Pips from entry to stop, multiplied by pip value and position size, give the money lost if the stop fills at its level. That amount is the trade’s R unit— and fixing it first turns the stop distance into a sizing input rather than an afterthought.

The same arithmetic runs in the free position size calculator, and the risk/reward calculator turns entry, stop and target into an R multiple before the trade exists. Two mechanical consequences follow: for a fixed risk budget, doubling the stop distance halves the position size; and measuring outcomes in R makes trades of different sizes and symbols comparable in one unit. None of this says where a stop should go — only that wherever it goes, distance and size are solved together.

Both levels stay editable for the life of the position: open the position’s modify dialog, enter new values, and each accepted change replaces the stored one on the server immediately. Nothing needs to keep running on your side afterwards.

The server does not accept every value, though. Brokers set a stops level — a minimum distance in points between the current quote and any stop loss or take profit — and a freeze level, a band around an imminent trigger inside which changes are refused. Both appear per symbol in the contract specification and vary by broker and account type, so a refused modification close to the market is almost always one of these rules rather than a platform error. The same two distances govern where pending orders may be placed, worked through in the order types guide.

The account history records both sides of the story: the S/L and T/P levels a trade carried, and the price its closing deal actually printed. Comparing the two, exit by exit, shows which stops filled at their level, which slipped, and which take profits gapped in your favour.

• Exit tagging: MT4 statements usually mark the close reason in the trade comment ([sl] / [tp]); MT5 stores it as the reason of the closing deal.
• Fill vs level:the difference between the recorded level and the close price — near zero for most take profits, occasionally wide for stops through news or weekend gaps.
• Clustering: grouped by symbol, session and day of week, the differences reveal whether slipped stop exits are random noise or concentrated in a few conditions.

Running that comparison by hand across hundreds of trades is tedious. A trading journal that syncs your own MetaTrader account history keeps the requested levels and the actual fills side by side, so the gap between planned and real exits in your trading becomes a measured number rather than an impression.