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This strategy combines Bollinger Bands with the Relative Strength Index (RSI) indicator. It requires signals from both indicators - RSI overbought/oversold together with breakouts of Bollinger Bands upper/lower lines - before issuing any trading signals. This makes the strategy’s signals more strict and reliable.

- Calculate Bollinger Bands consisting of middle line, upper line and lower line based on closing prices over a lookback period.
- Compute RSI indicator to judge if the market is overly bullish or bearish.
- Initiate short trade only when RSI shows overbought (higher than rsi_overbought parameter) and price breaks above Bollinger upper line.
- Initiate long trade only when RSI shows oversold (lower than rsi_oversold parameter) and price breaks below Bollinger lower line.

By requiring agreement from both Bollinger Bands and RSI, this strategy avoids acting on misleading signals from a single indicator, hence more reliable.

- Utilizes strengths of both Bollinger Bands and RSI, making signals more strict and avoiding mistakes.
- Bollinger Bands set dynamic channels to capture market volatility patterns.
- RSI gauges overbought/oversold scenarios, preventing chasing peaks or killing dips.

- Improper Bollinger parameters may fail to envelop prices effectively.
- Improper RSI parameters may fail to judge real overbought/oversold conditions accurately.
- Strategy itself cannot determine trend direction, requiring other indicators.

To address the above risks, parameters should be optimized, models strictly tested, and major trends determined with additional indicators.

- Test Bollinger Bands with different lookback periods to find optimal parameters.
- Test different RSI parameters to determine relatively better settings.
- Add other indicators like moving averages to determine overall trend.

This strategy successfully combines the strengths of Bollinger Bands and RSI, issuing trading signals only when both indicators agree. This avoids acting on misleading signals from any single indicator, making trades more reliable. Nonetheless, parameters should be optimized, models strictly tested, and major trends determined with other indicators, to further enhance the strategy’s stability and profitability.

/*backtest start: 2023-11-25 00:00:00 end: 2023-12-25 00:00:00 period: 1h basePeriod: 15m exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}] */ //@version=2 strategy("Bollinger + RSI, Double Strategy (by ChartArt) v1.1", shorttitle="CA_-_RSI_Bol_Strat_1.1", overlay=true) // ChartArt's RSI + Bollinger Bands, Double Strategy - Update // // Version 1.1 // Idea by ChartArt on January 18, 2015. // // This strategy uses the RSI indicator // together with the Bollinger Bands // to sell when the price is above the // upper Bollinger Band (and to buy when // this value is below the lower band). // // This simple strategy only triggers when // both the RSI and the Bollinger Bands // indicators are at the same time in // a overbought or oversold condition. // // In this version 1.1 the strategy was // both simplified for the user and // made more successful in backtesting. // // List of my work: // https://www.tradingview.com/u/ChartArt/ // // __ __ ___ __ ___ // / ` |__| /\ |__) | /\ |__) | // \__, | | /~~\ | \ | /~~\ | \ | // // ///////////// RSI RSIlength = input(6,title="RSI Period Length") RSIoverSold = 50 RSIoverBought = 50 price = close vrsi = rsi(price, RSIlength) ///////////// Bollinger Bands BBlength = input(200, minval=1,title="Bollinger Period Length") BBmult = 2 // input(2.0, minval=0.001, maxval=50,title="Bollinger Bands Standard Deviation") BBbasis = sma(price, BBlength) BBdev = BBmult * stdev(price, BBlength) BBupper = BBbasis + BBdev BBlower = BBbasis - BBdev source = close buyEntry = crossover(source, BBlower) sellEntry = crossunder(source, BBupper) plot(BBbasis, color=aqua,title="Bollinger Bands SMA Basis Line") p1 = plot(BBupper, color=silver,title="Bollinger Bands Upper Line") p2 = plot(BBlower, color=silver,title="Bollinger Bands Lower Line") fill(p1, p2) ///////////// Colors switch1=input(true, title="Enable Bar Color?") switch2=input(true, title="Enable Background Color?") TrendColor = RSIoverBought and (price[1] > BBupper and price < BBupper) and BBbasis < BBbasis[1] ? red : RSIoverSold and (price[1] < BBlower and price > BBlower) and BBbasis > BBbasis[1] ? green : na barcolor(switch1?TrendColor:na) bgcolor(switch2?TrendColor:na,transp=50) ///////////// RSI + Bollinger Bands Strategy if (not na(vrsi)) if (crossover(vrsi, RSIoverSold) and crossover(source, BBlower)) strategy.entry("RSI_BB_L", strategy.long, stop=BBlower, comment="RSI_BB_L") else strategy.cancel(id="RSI_BB_L") if (crossunder(vrsi, RSIoverBought) and crossunder(source, BBupper)) strategy.entry("RSI_BB_S", strategy.short, stop=BBupper, comment="RSI_BB_S") else strategy.cancel(id="RSI_BB_S") //plot(strategy.equity, title="equity", color=red, linewidth=2, style=areabr)

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