Yen End-of-Day Straddle

// ============================================================
// Yen End-of-Day Straddle
// ProRealAlgos Strategy Library  |  prorealalgos.com
// Type: Mean reversion
// Direction: Long & short
// Timeframe tested: Not yet tested
// ============================================================

// --- Settings ---
DEFPARAM CumulateOrders = false
DEFPARAM PreloadBars = 1000

// --- Parameters ---
// Defaults are the USD/JPY set. Other pairs from the published table:
//   AUD/JPY ratio 0.5, stop 0.8, target 1.2, period 12
//   EUR/JPY ratio 0.6, stop 1, target 0.8, period 8
//   GBP/JPY ratio 0.5, stop 0.6, target 1, period 8
positionSize = 1          // shares per trade
entryRatio = 0.5          // limit distance as a fraction of the recent range; higher means fewer trades
stopLossPct = 1           // protective stop, percent of entry price
takeProfitPct = 0.8       // profit target, percent of entry price
rangePeriod = 12          // bars used for the recent range
fridayNumber = 5          // no new orders on this day of the week

// --- Indicators ---
newDay = Day <> Day[1]