Narrow Range Inside Day Short Strategy

This short strategy combines NR7 and inside days for entry timing. The logic is: 1. Identify NR7, where range is narrowest over 7 days 2. Identify inside day, with high lower than previous high and low higher than…

Pine ScriptMean reversion SMA

Author: ChaoZhang
Complexity: Starter · 78 lines
Parameters: 6
Backtest bar: 4h · intraday
Tested on: BTC/USDT · futures

Jump to code View in vault Original on FMZ

Strategy Logic

This short strategy combines NR7 and inside days for entry timing.

The logic is:

Identify NR7, where range is narrowest over 7 days
Identify inside day, with high lower than previous high and low higher than previous low
On days when NR7 and inside day coincide, and close is lower than open
And simple moving average slope is down, go short
Cover short next day if close again lower than open

The strategy capitalizes on NR7 and inside days indicating congestion. Combined with MA slope and closing price filters, it improves short efficiency.

Advantages

NR7 and inside days time reversals
Conditions combine to avoid false signals
Optional long/short operation

Risks

NR7 plus inside day occurrences less common
Requires MA parameter optimization
SHORT-only misses long opportunities

Summary

This strategy shorts by efficiently identifying and confirming reversals. But lower frequency needs evaluation. Parameter tuning and long/short trading can expand strategy.

Parameters

Name	Default	What it controls
v_input_1	true	Show Narrow Range 7 (NR7) ?
v_input_2	true	Show Inside Day (I) ?
v_input_3	true	Show NR7ID (NR7 + Inside Day) bear color ?
v_input_4	false	Show NR7ID (NR7 + Inside Day) bull color ?
v_input_5	true	Show SMA ?
v_input_6	14	SMA Length

Source Pine Script

/*backtest
start: 2023-08-14 00:00:00
end: 2023-09-13 00:00:00
period: 4h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=2
strategy("NR7ID: Narrow Range + Inside Day, Short Only Strategy (by ChartArt)", shorttitle="CA_-_NR7ID_Short_Strat", overlay=true) // max_bars_back=5000


// ChartArt's Narrow Range + Inside Day Strategy (Short Only)
//
// Version 1.1
// Idea by ChartArt on Oktober 22, 2016.
//
// This short only strategy determines when there is both
// a NR7 (narrow range 7, a trading day in which the range
// is narrower than any of the previous six days), plus a
// inside day (high of the current day is lower than the high
// of the previous day and the low of the current day is higher
// than the low of the previous day) both on the same trading day
// and enters a short trade when the close is lower than the
// open and the slope of the simple moving average is downwards, too.
//
// The strategy exits the short trade next time the close is
// lower than the open in any of the next trading days.
//
// In addition the NR7ID can be colored (if close lower open
// colored in red, else in green) and the SMA can be drawn
// with a color based on the direction of the SMA slope.
//
// List of my work: 
// https://www.tradingview.com/u/ChartArt/
// 
//  __             __  ___       __  ___ 
// /  ` |__|  /\  |__)  |   /\  |__)  |  
// \__, |  | /~~\ |  \  |  /~~\ |  \  |  
// 
// 


// NR7 Identifier
show_NR7=input(true, type=bool,title="Show Narrow Range 7 (NR7) ?")
range=(high-low)
nr7=(range < range[1]) and (range < range[2]) and (range < range[3]) and (range < range[4]) and (range < range[5]) and (range < range[6])
plotchar(show_NR7?nr7:na, char="7", location=location.abovebar, color=blue)

// Inside Day Identifier
show_insidebar = input(true, type=bool,title="Show Inside Day (I) ?")
insidebar =  (high < high[1] and low > low[1])
plotchar(show_insidebar?insidebar:na, char="i", location=location.abovebar, color=blue)

// NR7 + Inside Day Identifier
show_NR7ID_bear = input(true, type=bool,title="Show NR7ID (NR7 + Inside Day) bear color ?")
NR7ID = nr7 and insidebar
NR7ID_bear_color = NR7ID and open > close ? red : na
barcolor(show_NR7ID_bear?NR7ID_bear_color:na)
show_NR7ID_bull = input(false, type=bool,title="Show NR7ID (NR7 + Inside Day) bull color ?")
NR7ID_bull_color = NR7ID and open < close ? green : na
barcolor(show_NR7ID_bull?NR7ID_bull_color:na)

// Simple Moving Average
show_ma = input(true, type=bool,title="Show SMA ?")
ma_length = input(14,title="SMA Length")
ma = sma(close,ma_length)
ma_change = change(ma) > 0
ma_change_color = change(ma) > 0 ? green : change(ma) < 0 ? red : blue
plot(show_ma?ma:na,color=ma_change_color,linewidth=3)

// Short Strategy: NR7 + Inside Day + close is smaller than open + change of SMA is downwards
strategy.entry("sell", strategy.short, when = NR7ID and open > close and ma_change == false, comment="Short")
strategy.close("sell", when = open > close )

// (not enabled) Long Strategy: NR7 + Inside Day + close is larger than open + change of SMA is upwards
//strategy.entry("long", strategy.long, when = NR7ID and open < close and ma_change == true, comment="Long")
//strategy.close("long", when = open < close )

Published by ChaoZhang on the FMZ strategy square · last modified 2023-09-14. Collected in the Quant Trading Vault. Unvalidated research: re-test with your own data and costs before trusting it.

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