Pipsgrowth EX17026 Volatility

This EA trades a single Gaussian-style envelope around an EMA(14) midline, with the goal of catching the first thrust that follows a period of compression on XAUUSD M5. The midline is built from a 14-period EMA of close prices; the upper and lower bands are placed 1.2×ATR(14) on either side. Each new bar, the EA checks whether the close has just crossed from inside the envelope to outside it (a two-bar break: previous bar inside, current bar outside), whether the 14-EMA slope agrees with the trade direction, whether the higher-timeframe EMA(50) on the chart's HTF (H4 by default) is also on the right side of price, and whether the break distance exceeds MinBreakDistance × ATR (0.20 by default). When all of those conditions line up and the current bar's body makes up at least 45% of its total range, the EA opens a position in the direction of the break and closes any opposite-direction position held by the same magic number.

The position management layer is the part of the code that does most of the practical work. InitialSL_Points places the stop 80 points from the entry (80 cents on a 5-digit XAUUSD quote), and FixedTP_Points sets the take-profit at 200 points, giving a fixed 1:2.5 risk-to-reward ratio. The EA also has a Gaussian cross exit: with ExitBufferATRMultiplier set to 0.20, a long position is closed if price closes more than 0.20×ATR below the EMA(14) midline, and a short is closed on a close that far above it. Either the fixed TP or the cross exit, whichever comes first, takes the trade off. After the position is open, the EnableDynamicLockProfit block does the heavy lifting of protecting accrued gains. Each time floating profit crosses another LockProfitEvery_X_Dollars boundary ($2 by default), the EA recalculates where the new stop should be, then moves the existing stop forward by LockProfitEvery_X_Dollars minus LockMinusBuffer ($2 − $1 = $1) per step. The stop only ever moves in the favorable direction, and it never sets itself inside the broker's stops or freeze level, both of which are checked with the InsideStopsLevelForSLTP and InsideFreezeLevelForSLTP helpers before the modify is sent.

Sizing is controlled by two parallel paths. With UseRiskPercent enabled (off by default), ComputeRiskBasedLots reads AccountInfoDouble(ACCOUNT_EQUITY), multiplies it by RiskPercent (1.0%), divides by the per-lot dollar loss at the planned stop distance, and normalizes the result against the symbol's volume min/max/step. With UseRiskPercent disabled, the EA uses the static Lots input (0.10) directly. Both paths pass through NormalizeVolume, which clamps to the broker's volume envelope and rounds down to the nearest step before sending. The risk-side gates run before sizing is committed: CheckMaxDrawdown compares live equity to balance and refuses new entries once drawdown hits MaxDrawdownPercent (10%), TradingAllowedOnSymbol checks the symbol's trade mode (FULL / LONGONLY / SHORTONLY / CLOSEONLY), and SpreadTooWide refuses any tick where the live spread is above MaxSpreadPoints (40 points on XAUUSD by default). InsideStopsLevelForSLTP and InsideFreezeLevelForSLTP run after the SL/TP prices are computed and silently skip the entry if those prices would land inside the broker's protective band.

The 'no new entry until the basket is healthy' gate is a distinctive design choice in this EA. OneTradeOnly is true by default, so a fresh trade can only open if no position currently exists for the magic. If OneTradeOnly is off, MaxOpenTrades (5) caps the basket. If AllowOnlyProfitableAdditions is also on (default), AllPositionsHaveMinProfitByMagic walks the basket and refuses the new entry unless every existing position is showing at least MinProfitPerTradeToAdd ($5) of floating profit. That is the practical implementation of 'wait for the basket to breathe before adding' — it is not a martingale, but it is also not a free-for-all. OnlyNewBarEntries is true by default, so the signal logic is only re-evaluated on the open of a new M5 bar; intra-bar ticks do not open new positions, but they do continue to manage any open position via the management loop at the bottom of OnTick.

The trade engine itself is hardened against broker quirks. ResolveFillingMode reads SYMBOL_FILLING_MODE and prefers FOK, falls back to IOC, and only uses RETURN if neither is available. TradeBuy and TradeSell set the chosen filling mode before each order; on a TRADE_RETCODE_INVALID_FILL response, they cycle to the next available mode and retry. Once a ticket is in hand, TryClose_EX17026 and TryModify_EX17026 each loop up to three times on transient retcodes (REQUOTE, TIMEOUT, PRICE_OFF, PRICE_CHANGED) with a 200ms or 100ms Sleep between attempts. The three handle initializations in OnInit (maHandle, atrHandle, emaHandle) all fail the EA at startup if any of them returns INVALID_HANDLE.

The optional UseAutoFilter path is intentionally narrow. AutoTuneFilters only adjusts the MinATR threshold — bumping it to 0.5× the current spread if that exceeds the static MinATR — and it leaves the band's DistanceMultiplier and the break distance at their input values. UseAutoFilter is off by default; the source comment notes this is for 'more predictable behavior.' The Gaussian exit, dynamic lock profit, and the AllowOnlyProfitableAdditions gate are all on by default; turning them off essentially reduces the EA to a flat breakout trader with a fixed stop and a fixed take-profit.

What you should expect in backtest: with the default H1-coded Timeframe input (input 0 → H1 by MapTimeframeInt) and a TrendFilterTF of 6 (H4), the EA will look for breakouts on whatever chart period the user attaches it to, while the higher-timeframe side filter always comes from H4 EMA(50). On a quiet, range-bound XAUUSD day, the spread filter, the MinATR floor, and the 2-bar break requirement are what keep the EA out of chop. On a strong trend day, the dynamic lock profit is what turns a winner into a meaningful contributor by stair-stepping the stop up every $2 of profit and giving the position room to run toward the 200-point TP. The hard 10% drawdown cap and the spread gate are the safety net underneath the strategy itself.