ChaoZhang
概述
波动率压缩突破策略是一种结合布林带（Bollinger Bands, BB）和凯尔特纳通道（Keltner Channel, KC）的交易系统。它旨在通过监测价格突破和趋势信号，捕捉市场的主要移动。策略关注市场的压缩期（低波动率）和随后的突破（高波动率），试图在大规模价格移动开始之前进入市场。
策略原理
波动率压缩突破策略的核心是识别市场波动率的减少和增加。布林带是通过计算价格的标准偏差而形成的，而凯尔特纳通道则是基于平均真实范围（ATR）。当布林带在凯尔特纳通道内部压缩时，它表明市场波动率降低，可能会有一次大规模的价格突破。策略通过检查布林带是否处于凯尔特纳通道内部，以及价格是否突破布林带的上限或下限，来发出交易信号。此外，策略还考虑了指数移动平均线（EMA）的趋势排列，以增强信号的有效性。
策略优势
该策略的主要优势在于它结合了波动率指标和趋势指标，提供了一种全面的市场视角。通过布林带和凯尔特纳通道的组合，策略能够有效地识别潜在的大规模市场移动。此外，EMA趋势排列的使用可以帮助确认市场方向，减少错误信号。
策略风险
波动率压缩突破策略的主要风险在于假突破信号和市场的不确定性。在高波动率的市场条件下，布林带可能会频繁地被突破，从而产生误导性的信号。此外，如果没有正确地确定市场趋势，策略可能会产生不利的交易。为了降低这些风险，可以通过调整参数、结合其他指标或采用更严格的入场条件来优化策略。
策略优化方向
该策略可以通过多种方式进行优化。首先，可以通过调整布林带和凯尔特纳通道的参数来适应不同的市场条件。其次，可以引入其他技术指标，如相对强弱指数（RSI）或移动平均收敛发散（MACD），以提供额外的交易信号确认。最后，可以考虑将此策略与其他类型的交易系统结合，以形成一个更加全面和多元化的交易框架。
总结
波动率压缩突破策略是一个强大且灵活的交易系统，结合了布林带和凯尔特纳通道的优点。通过监测市场波动率和趋势信号，它能够有效地识别大规模的市场移动。虽然策略具有一定的风险，但通过适当的优化和参数调整，可以大大提高其效率和准确性。总的来说，这个策略提供了一种独特的视角，用于捕捉和利用市场的主要趋势和突破。
策略源码
/*backtest
start: 2023-01-01 00:00:00
end: 2023-11-09 00:00:00
period: 1h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/
// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © Bishnu103
//@version=4
strategy(title="Squeeze Breakout using BB and KC [v1.0][Bishnu103]",shorttitle="BB BREAKOUT",overlay=true,calc_on_every_tick=true)
// ***********************************************************************************************************************
// input variables
bbLength = input(title="BB Length", minval=1, defval=20)
bbStdDev = input(title="BB StdDev", minval=1, defval=2)
kcLength = input(title="KC Length", minval=1, defval=20)
kcMult = input(title="KC Mult", defval=1.5)
atrLength = input(title="ATR Length", minval=1, defval=20)
entry_distance = input(title="Entry distance from alert", minval=1, maxval=10, defval=10)
bb_squeeze_switch = input(title="BB Squeeze Check", type=input.bool, defval=true)
bb_squeeze_width = input(title="BB Squeeze Width", minval=1.0, defval=3.0)
bb_in_kc_switch = input(title="BB within KC Check", type=input.bool, defval=false)
ema_trend_switch = input(title="EMA Trend Check", type=input.bool, defval=false)
show_bb_switch = input(title="Show BB", type=input.bool, defval=true)
show_kc_switch = input(title="Show KC", type=input.bool, defval=true)
show_8ema_switch = input(title="Show 8EMA", type=input.bool, defval=true)
show_emas_switch = input(title="Show EMAs", type=input.bool, defval=false)
// ***********************************************************************************************************************
// global variables
closed_above_bb = false
closed_below_bb = false
// variable values available across candles
var entry_price = 0.0
var sl_price = 0.0
var exit_price_8ema = 0.0
var candle_count = 0
// ***********************************************************************************************************************
// function to return bollinger band values based on candle poition passed
getBB(pos) =>
float basis = sma(close[pos], bbLength)
float dev = bbStdDev * stdev(close[pos], bbLength)
[basis, basis + dev, basis - dev]
// function to return Keltner Channel values based on candle poition passed
getKC(pos) =>
mKC = ema(close[pos],kcLength)
range = kcMult * atr(atrLength)[pos]
uKC = mKC + range
lKC = mKC - range
[mKC,uKC,lKC]
// ***********************************************************************************************************************
// strategy
//
// get current bb value
[mBB_0,uBB_0,lBB_0] = getBB(0)
[mBB_1,uBB_1,lBB_1] = getBB(1)
// if a candle closes above bb and previous candle closed inside bb then it's a bullish signal
if close[0] > uBB_0
closed_above_bb := true
entry_price := high[0]
// if a candle closes above bb and previous candle closed inside bb then it's a bullish signal
if close[0] < lBB_0
closed_below_bb := true
entry_price := low[0]
// check if BB is in squeeze
bb_in_squeeze = bb_squeeze_switch ? ((uBB_1 - lBB_1) < (atr(20)[1] * bb_squeeze_width)) : true
// 6 candle's bb prior to the alert candle, are within keltner channel on either upper side of the bands or on lower side of the bands
// bb
[mBB_2,uBB_2,lBB_2] = getBB(2)
[mBB_3,uBB_3,lBB_3] = getBB(3)
[mBB_4,uBB_4,lBB_4] = getBB(4)
[mBB_5,uBB_5,lBB_5] = getBB(5)
[mBB_6,uBB_6,lBB_6] = getBB(6)
// kc
[mKC_1,uKC_1,lKC_1] = getKC(1)
[mKC_2,uKC_2,lKC_2] = getKC(2)
[mKC_3,uKC_3,lKC_3] = getKC(3)
[mKC_4,uKC_4,lKC_4] = getKC(4)
[mKC_5,uKC_5,lKC_5] = getKC(5)
[mKC_6,uKC_6,lKC_6] = getKC(6)
// check if either side 6 candle's bb are inside kc
lower_squeeze_is_good = uBB_1 < uKC_1 and uBB_2 < uKC_2 and uBB_3 < uKC_3 and uBB_4 < uKC_4 and uBB_5 < uKC_5 and uBB_6 < uKC_6
upper_squeeze_is_good = lBB_1 > lKC_1 and lBB_2 > lKC_2 and lBB_3 > lKC_3 and lBB_4 > lKC_4 and lBB_5 > lKC_5 and lBB_6 > lKC_6
squeeze_is_good = bb_in_kc_switch ? (upper_squeeze_is_good or lower_squeeze_is_good) : true
// EMAs (8, 21, 34, 55, 89) should be aligned in sequence
ema_8 = ema(close,8)
ema_21 = ema(close,21)
ema_34 = ema(close,34)
ema_55 = ema(close,55)
ema_89 = ema(close,89)
ema_trend_check1 = ema_trend_switch and closed_above_bb and ema_8 > ema_21 and ema_21 > ema_34 and ema_34 > ema_55 and ema_55 > ema_89
ema_trend_check2 = ema_trend_switch and closed_below_bb and ema_8 < ema_21 and ema_21 < ema_34 and ema_34 < ema_55 and ema_55 < ema_89
ema_trend_check = ema_trend_switch ? (ema_trend_check1 or ema_trend_check2) : true
// ***********************************************************************************************************************
// entry conditions
long_entry = closed_above_bb and bb_in_squeeze and squeeze_is_good and ema_trend_check
short_entry = closed_below_bb and bb_in_squeeze and squeeze_is_good and ema_trend_check
candle_count := candle_count + 1
if long_entry or short_entry
candle_count := 0
if long_entry or short_entry
exit_price_8ema := na
if long_entry or short_entry
sl_price := mBB_0
// ***********************************************************************************************************************
// exit conditions
// long trade - a candle closes below 8ema and in next candle price crosses low of previous candle
// short trade - a candle closes above 8ema and in next candle price crosses high of previous candle
long_exit_8ema = strategy.position_size > 0 and crossunder(close,ema(close,8))
short_exit_8ema = strategy.position_size < 0 and crossover(close,ema(close,8))
if long_exit_8ema
exit_price_8ema := low
if short_exit_8ema
exit_price_8ema := high
// ***********************************************************************************************************************
// position sizing
price = if close[0] > 25000
25000
else
price = close[0]
qty = 25000/price
// ***********************************************************************************************************************
// entry
if long_entry
strategy.entry("BUY", strategy.long, qty, stop=entry_price, comment="BUY @ "+ tostring(entry_price))
if short_entry and candle_count < 11
strategy.entry("SELL", strategy.short, qty, stop=entry_price, comment="SELL @ "+ tostring(entry_price))
if candle_count > entry_distance
strategy.cancel("BUY",true)
strategy.cancel("SELL",true)
// ***********************************************************************************************************************
// exit
if strategy.position_size > 0 and long_exit_8ema
strategy.exit("EXIT using 8EMA", "BUY", stop=exit_price_8ema, comment="EXIT @ "+ tostring(exit_price_8ema))
if strategy.position_size < 0 and short_exit_8ema
strategy.exit("EXIT using 8EMA", "SELL", stop=exit_price_8ema, comment="EXIT @ "+ tostring(exit_price_8ema))
// ***********************************************************************************************************************
// plots
//
// plot BB
[mBBp,uBBp,lBBp] = getBB(0)
p_mBB = plot(show_bb_switch ? mBBp : na, color=color.teal)
p_uBB = plot(show_bb_switch ? uBBp : na, color=color.teal)
p_lBB = plot(show_bb_switch ? lBBp : na, color=color.teal)
fill(p_uBB,p_lBB,color=color.teal,transp=95)
// plot KC
[mKCp,uKCp,lKCp] = getKC(0)
p_uKC = plot(show_kc_switch ? uKCp : na, color=color.red)
p_lKC = plot(show_kc_switch ? lKCp : na, color=color.red)
// plot 8 ema
plot(show_8ema_switch?ema_8:na,color=color.blue)
// plot EMAs
plot(show_emas_switch ? ema_8 : na, color=color.green)
plot(show_emas_switch ? ema_21 : na, color=color.lime)
plot(show_emas_switch ? ema_34 : na, color=color.maroon)
plot(show_emas_switch ? ema_55 : na, color=color.orange)
plot(show_emas_switch ? ema_89 : na, color=color.purple)