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量化交易策略——KDJ指标
Quantpedia
Created 2017-01-16 15:00:09  Updated 2019-08-01 09:22:39
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量化交易策略——KDJ指标

期货和股票市场上最常用的技术分析工具——KDJ指标,全名随机指标(Stochastics),由乔治·莱恩博士(George Lane)所创。融合了动量观念、强弱指标一些优点的KDJ指标,通过特定周期内出现过的最高价、最低价、收盘价三者之间的比例关系为基本数据进行计算,将得出的K值、D值与J值连接成曲线图,就形成了反映价格波动趋势的KDJ指标。

  • 计算方法:首先要计算周期的RSV值,然后再计算K值、D值、J值。以9日周期的KDJ为例:

    RSVt=(Ct-L9)/(H9-L9)*100 (Ct=当日收盘价;L9=9天内最低价;H9=9天内最高价)

    K值为RSV值3日平滑移动平均线,公式为:Kt=RSVt/3+2*t-1/3

    D值为K值的3日平滑移动平均线,公式为:Dt=Kt/3+2*Dt-1/3

    J值为三倍K值减两倍D值,公式为:Jt=3Dt-2Kt

    KDJ指标在应用时需要考虑的几大方面:

    1.K与D的取值,范围是0-100,80以上行情呈现超买现象,20以下呈现超卖现象。

    2.买进信号:K值在上涨趋势中﹤D值,K线向上突破D线时;卖出信号:K值在下跌趋势中﹥D值,K线向下跌破D线。

    3.交易不活跃、发行量小的股票并不适用KD指标,而对大盘和热门大盘的准确性却很高。

    4.在KD处在高位或低位,如果出现与股价走向的背离,则是采取行动的信号。

    5.J的取值﹥100为超买,﹤0为超卖,都属于价格的非正常区域。

    6.短期转势预警信号:K值和D值上升或者下跌的速度减弱,倾斜度趋于平缓

    通常K、D、J三值在20-80之间为徘徊区,宜观望,就敏感度而言,最强的是J值,其次是K,最慢的则是D了,而从安全性来讲,就刚刚相反。

  • 策略代码(非 发明者量化 代码)

import numpy as np import pandas as pd from pandas import DataFrame import talib as ta start = '2006-01-01' # 回测起始时间 end = '2015-08-17' # 回测结束时间 benchmark = 'HS300' # 策略参考标准 universe = set_universe('HS300') capital_base = 100000 # 起始资金 refresh_rate = 1 # 调仓频率,即每 refresh_rate 个交易日执行一次 handle_data() 函数 longest_history=20 MA=[5,10,20,30,60,120] #移动均线参数 def initialize(account): account.kdj=[] def handle_data(account): # 每个交易日的买入卖出指令 sell_pool=[] hist = account.get_history(longest_history) #data=DataFrame(hist['600006.XSHG']) stock_pool,all_data=Get_all_indicators(hist) pool_num=len(stock_pool) if account.secpos==None: print 'null' for i in stock_pool: buy_num=int(float(account.cash/pool_num)/account.referencePrice[i]/100.0)*100 order(i, buy_num) else: for x in account.valid_secpos: if all_data[x].iloc[-1]['closePrice']<all_data[x].iloc[-1]['ma1'] and (all_data[x].iloc[-1]['ma1']-all_data[x].iloc[-1]['closePrice'])/all_data[x].iloc[-1]['ma1']>0.05 : sell_pool.append(x) order_to(x, 0) if account.cash>500 and pool_num>0: try: sim_buy_money=float(account.cash)/pool_num for l in stock_pool: #print sim_buy_money,account.referencePrice[l] buy_num=int(sim_buy_money/account.referencePrice[l]/100.0)*100 #buy_num=10000 order(l, buy_num) except Exception as e: #print e pass def Get_kd_ma(data): indicators={} #计算kd指标 indicators['k'],indicators['d']=ta.STOCH(np.array(data['highPrice']),np.array(data['lowPrice']),np.array(data['closePrice']),\ fastk_period=9,slowk_period=3,slowk_matype=0,slowd_period=3,slowd_matype=0) indicators['ma1']=pd.rolling_mean(data['closePrice'], MA[0]) indicators['ma2']=pd.rolling_mean(data['closePrice'], MA[1]) indicators['ma3']=pd.rolling_mean(data['closePrice'], MA[2]) indicators['ma4']=pd.rolling_mean(data['closePrice'], MA[3]) indicators['ma5']=pd.rolling_mean(data['closePrice'], MA[4]) indicators['closePrice']=data['closePrice'] indicators=pd.DataFrame(indicators) return indicators def Get_all_indicators(hist): stock_pool=[] all_data={} for i in hist: try: indicators=Get_kd_ma(hist[i]) all_data[i]=indicators except Exception as e: #print 'error:%s'%e pass if indicators.iloc[-2]['k']<indicators.iloc[-2]['d'] and indicators.iloc[-1]['k']>indicators.iloc[-2]['d']: stock_pool.append(i) elif indicators.iloc[-1]['k']>=10 and indicators.iloc[-1]['d']<=20 and indicators.iloc[-1]['k']>indicators.iloc[-2]['k'] and indicators.iloc[-2]['k']<indicators.iloc[-3]['k']: stock_pool.append(i) return stock_pool,all_data

转载自 程序化交易者

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