A ideia central desta estratégia é ajustar dinamicamente o tamanho da posição com base na tendência da curva de ações - aumentar o tamanho da posição durante o lucro e diminuir o tamanho da posição durante a perda para controlar o risco geral.
Estratégia dinâmica de dimensionamento das posições baseada na curva de património
A estratégia usa dois métodos para determinar se a curva de ações está em uma tendência de queda: 1) Calcule médias móveis simples rápidas e lentas da curva de ações, se a SMA rápida estiver abaixo da lenta, ela é considerada uma tendência de queda; 2) Calcule a curva de ações em relação à sua própria média móvel simples de período mais longo, se a ação estiver abaixo da linha média móvel, ela é considerada uma tendência de queda.
Quando a tendência de queda da curva de ações é determinada, o tamanho da posição será reduzido ou aumentado em uma certa porcentagem com base nas configurações. Por exemplo, se uma redução de 50% for definida, o tamanho da posição original de 10% será reduzido para 5%. Este mecanismo aumenta o tamanho da posição durante o lucro e diminui o tamanho da posição durante a perda para controlar o risco geral.
A lógica geral desta estratégia é clara - ajusta dinamicamente o tamanho da posição com base na curva de ações, o que ajuda a controlar efetivamente o risco.
/*backtest start: 2024-01-08 00:00:00 end: 2024-01-15 00:00:00 period: 3m basePeriod: 1m 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/ // © shardison //@version=5 //EXPLANATION //"Trading the equity curve" as a risk management method is the //process of acting on trade signals depending on whether a system’s performance //is indicating the strategy is in a profitable or losing phase. //The point of managing equity curve is to minimize risk in trading when the equity curve is in a downtrend. //This strategy has two modes to determine the equity curve downtrend: //By creating two simple moving averages of a portfolio's equity curve - a short-term //and a longer-term one - and acting on their crossings. If the fast SMA is below //the slow SMA, equity downtrend is detected (smafastequity < smaslowequity). //The second method is by using the crossings of equity itself with the longer-period SMA (equity < smasloweequity). //When "Reduce size by %" is active, the position size will be reduced by a specified percentage //if the equity is "under water" according to a selected rule. If you're a risk seeker, select "Increase size by %" //- for some robust systems, it could help overcome their small drawdowns quicker. strategy("Use Trading the Equity Curve Postion Sizing", shorttitle="TEC", default_qty_type = strategy.percent_of_equity, default_qty_value = 10, initial_capital = 100000) //TRADING THE EQUITY CURVE INPUTS useTEC = input.bool(true, title="Use Trading the Equity Curve Position Sizing") defulttraderule = useTEC ? false: true initialsize = input.float(defval=10.0, title="Initial % Equity") slowequitylength = input.int(25, title="Slow SMA Period") fastequitylength = input.int(9, title="Fast SMA Period") seedequity = 100000 * .10 if strategy.equity == 0 seedequity else strategy.equity slowequityseed = strategy.equity > seedequity ? strategy.equity : seedequity fastequityseed = strategy.equity > seedequity ? strategy.equity : seedequity smaslowequity = ta.sma(slowequityseed, slowequitylength) smafastequity = ta.sma(fastequityseed, fastequitylength) equitycalc = input.bool(true, title="Use Fast/Slow Avg", tooltip="Fast Equity Avg is below Slow---otherwise if unchecked uses Slow Equity Avg below Equity") sizeadjstring = input.string("Reduce size by (%)", title="Position Size Adjustment", options=["Reduce size by (%)","Increase size by (%)"]) sizeadjint = input.int(50, title="Increase/Decrease % Equity by:") equitydowntrendavgs = smafastequity < smaslowequity slowequitylessequity = strategy.equity < smaslowequity equitymethod = equitycalc ? equitydowntrendavgs : slowequitylessequity if sizeadjstring == ("Reduce size by (%)") sizeadjdown = initialsize * (1 - (sizeadjint/100)) else sizeadjup = initialsize * (1 + (sizeadjint/100)) c = close qty = 100000 * (initialsize / 100) / c if useTEC and equitymethod if sizeadjstring == "Reduce size by (%)" qty := (strategy.equity * (initialsize / 100) * (1 - (sizeadjint/100))) / c else qty := (strategy.equity * (initialsize / 100) * (1 + (sizeadjint/100))) / c //EXAMPLE TRADING STRATEGY INPUTS CMO_Length = input.int(defval=9, minval=1, title='Chande Momentum Length') CMO_Signal = input.int(defval=10, minval=1, title='Chande Momentum Signal') chandeMO = ta.cmo(close, CMO_Length) cmosignal = ta.sma(chandeMO, CMO_Signal) SuperTrend_atrPeriod = input.int(10, "SuperTrend ATR Length") SuperTrend_Factor = input.float(3.0, "SuperTrend Factor", step = 0.01) Momentum_Length = input.int(12, "Momentum Length") price = close mom0 = ta.mom(price, Momentum_Length) mom1 = ta.mom( mom0, 1) [supertrend, direction] = ta.supertrend(SuperTrend_Factor, SuperTrend_atrPeriod) stupind = (direction < 0 ? supertrend : na) stdownind = (direction < 0? na : supertrend) //TRADING CONDITIONS longConditiondefault = ta.crossover(chandeMO, cmosignal) and (mom0 > 0 and mom1 > 0 and close > stupind) and defulttraderule if (longConditiondefault) strategy.entry("DefLong", strategy.long, qty=qty) shortConditiondefault = ta.crossunder(chandeMO, cmosignal) and (mom0 < 0 and mom1 < 0 and close < stdownind) and defulttraderule if (shortConditiondefault) strategy.entry("DefShort", strategy.short, qty=qty) longCondition = ta.crossover(chandeMO, cmosignal) and (mom0 > 0 and mom1 > 0 and close > stupind) and useTEC if (longCondition) strategy.entry("AdjLong", strategy.long, qty = qty) shortCondition = ta.crossunder(chandeMO, cmosignal) and (mom0 < 0 and mom1 < 0 and close < stdownind) and useTEC if (shortCondition) strategy.entry("AdjShort", strategy.short, qty = qty) plot(strategy.equity) plot(smaslowequity, color=color.new(color.red, 0)) plot(smafastequity, color=color.new(color.green, 0))