সেশন ব্রেকআউটের উপর ভিত্তি করে স্বল্পমেয়াদী স্প্রেড ট্রেডিং কৌশল

/*backtest
start: 2023-08-20 00:00:00
end: 2023-09-19 00:00:00
period: 1h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=3
strategy("Breakout Scalper", overlay=true)

// -------------------------------------------------------------------------------------------------
// INPUTS
// -------------------------------------------------------------------------------------------------
// Period of the "fast" donchian channel
fast_window = input(title="Fast Window",  defval=13, minval=1)
// Used for the volatility (atr) period
slow_window = input(title="Slow Window",  defval=52, minval=1)
// Period of EMA used as the current price
instant_period = input(title="Instant Period",  defval=3, minval=1)
// Minimum ratio of cloud width to ATR in order for trade to be active
cloud_min_percent = input(title="Minimum Cloud ATR Multiplier", type=float, defval=1.0, minval=0)
// Session where we allow trades to be active
trading_sesh = input(title="Trading Session",  defval='1000-1500')
// -------------------------------------------------------------------------------------------------

// -------------------------------------------------------------------------------------------------
// SESSION TIMING
// -------------------------------------------------------------------------------------------------
is_newbar(t) =>
    na(t[1]) and not na(t) or t[1] < t

day_time = time("D")
sess_time = time(timeframe.period, trading_sesh)
day_open_bar = is_newbar(day_time)
sess_open_bar = is_newbar(sess_time)
sess_close_bar = na(sess_time) and not na(sess_time[1])
sess_is_open = false
sess_is_open := sess_open_bar ? true : (sess_close_bar ? false : sess_is_open[1])
// -------------------------------------------------------------------------------------------------

// -------------------------------------------------------------------------------------------------
// DONCHIANS
// -------------------------------------------------------------------------------------------------
slow_high = na
slow_high := day_open_bar ? high : (high > slow_high[1] ? high : slow_high[1])
slow_low = na
slow_low := day_open_bar ? low : (low < slow_low[1] ? low : slow_low[1])
slow_mid = (slow_high + slow_low) / 2

fast_low = max(slow_low, lowest(fast_window))
fast_high = min(slow_high, highest(fast_window))
fast_mid = (fast_low + fast_high) / 2
// -------------------------------------------------------------------------------------------------


// -------------------------------------------------------------------------------------------------
// TREND CLOUD
// -------------------------------------------------------------------------------------------------
cloud_width = fast_mid - slow_mid
slow_atr = atr(slow_window)
cloud_percent = cloud_width / slow_atr
cloud_color = cloud_percent > cloud_min_percent ? green : (cloud_percent < -cloud_min_percent ? red : gray)

fp = plot(fast_mid, title="Fast MidR", color=green)
sp = plot(slow_mid, title="Slow MidR", color=red)
fill(fp, sp, color=cloud_color)
// -------------------------------------------------------------------------------------------------


// -------------------------------------------------------------------------------------------------
// INSTANT PRICE
// -------------------------------------------------------------------------------------------------
instant_price = ema(close, instant_period)
plot(instant_price, title="Instant Price", color=black, transp=50)
// -------------------------------------------------------------------------------------------------


// -------------------------------------------------------------------------------------------------
// ENTRY SIGNALS & STOPS
// -------------------------------------------------------------------------------------------------
buy_entry_signal = sess_is_open and (instant_price > fast_mid) and (cloud_percent > cloud_min_percent)
sell_entry_signal = sess_is_open and (instant_price < fast_mid) and (cloud_percent < -cloud_min_percent)
buy_close_signal = sess_close_bar or (cloud_percent < 0)
sell_close_signal = sess_close_bar or (cloud_percent > 0)

entry_buy_stop = slow_high
entry_sell_stop = slow_low
exit_buy_stop = max(slow_low, fast_low)
exit_sell_stop = min(slow_high, fast_high)

entry_buy_stop_color = (strategy.position_size == 0) ? (buy_entry_signal ? green : na) : na
plotshape(entry_buy_stop, location=location.absolute, color=entry_buy_stop_color, style=shape.circle)
entry_sell_stop_color = (strategy.position_size == 0) ? (sell_entry_signal ? red : na) : na
plotshape(entry_sell_stop, location=location.absolute, color=entry_sell_stop_color, style=shape.circle)
exit_buy_stop_color = (strategy.position_size > 0) ? red : na
plotshape(exit_buy_stop, location=location.absolute, color=exit_buy_stop_color, style=shape.xcross)
exit_sell_stop_color = (strategy.position_size < 0) ? green : na
plotshape(exit_sell_stop, location=location.absolute, color=exit_sell_stop_color, style=shape.xcross)
// -------------------------------------------------------------------------------------------------


// -------------------------------------------------------------------------------------------------
// STRATEGY EXECUTION
// -------------------------------------------------------------------------------------------------
strategy.entry("long", strategy.long, stop=entry_buy_stop, when=buy_entry_signal)
strategy.cancel("long", when=not buy_entry_signal)
strategy.exit("stop", "long", stop=exit_buy_stop)
strategy.entry("short", strategy.short, stop=entry_sell_stop, when=sell_entry_signal)
strategy.cancel("short", when=not sell_entry_signal)
strategy.exit("stop", "short", stop=exit_sell_stop)
strategy.close("long", when=buy_close_signal)
strategy.close("short", when=sell_close_signal)
// -------------------------------------------------------------------------------------------------