Exemplo n.º 1
0
Arquivo: pb.py Projeto: Coderx7/CNN
def back_test(pair, date, param):
    tracker = TradeAnalysis(Contract(pair[0]))
    algo = { 'class': ConstantAlgo }
    algo['param'] = {'x': pair[0],
                     'y': pair[1],
                     'a': 1,
                     'b': 0,
                     'rolling': param[0],
                     'bollinger': param[1],
                     'const': param[2],
                     'block': 100,
                     'tracker': tracker
                     }
    settings = { 'date': date,
                 'path': DATA_PATH,
                 'tickset': 'top',
                 'algo': algo,
                 'singletick': True}
    runner = PairRunner(settings)
    runner.run()
    account = runner.account
    history = account.history.to_dataframe(account.items)
    score = float(history[['pnl']].iloc[-1])
    order_win = tracker.order_winning_ratio()
    order_profit = tracker.analyze_all_profit()[0]
    num_rounds = tracker.analyze_all_profit()[2]
    return score, order_win, order_profit, num_rounds, runner
Exemplo n.º 2
0
def back_test(pair, date, param):
    tracker = TradeAnalysis(Contract(pair[0]))
    algo = {'class': ConstantAlgo}
    algo['param'] = {
        'x': pair[0],
        'y': pair[1],
        'a': 1,
        'b': 0,
        'rolling': param[0],
        'bollinger': param[1],
        'const': param[2],
        'block': 100,
        'tracker': tracker
    }
    settings = {
        'date': date,
        'path': DATA_PATH,
        'tickset': 'top',
        'algo': algo,
        'singletick': True
    }
    runner = PairRunner(settings)
    runner.run()
    account = runner.account
    history = account.history.to_dataframe(account.items)
    score = float(history[['pnl']].iloc[-1])
    order_win = tracker.order_winning_ratio()
    order_profit = tracker.analyze_all_profit()[0]
    num_rounds = tracker.analyze_all_profit()[2]
    return score, order_win, order_profit, num_rounds, runner
Exemplo n.º 3
0
    def param_updated(self):
        # make sure parent updates its param
        super(StopWinAlgo, self).param_updated()

        # algo settings
        self.if_ema = self.param['if_ema'] # if false, use sma
        self.if_stop_win = self.param['if_stop_win'] #if false, don't stop win
        self.if_consider_spread = self.param['if_consider_spread'] #if false, don't consider spread and fee

        # create rolling
        self.long_roll = SimpleMoving(size=self.param['rolling'])
        self.short_roll = SimpleMoving(size=self.param['rolling'])
        self.long_autoreg = Autoregressive(alpha = self.param['alpha'])
        self.short_autoreg = Autoregressive(alpha = self.param['alpha'])
        self.spreadx_roll = SimpleMoving(size = self.param['rolling'])
        self.spready_roll = SimpleMoving(size = self.param['rolling'])

        self.bollinger = self.param['bollinger']
        self.block = self.param['block']
        self.stop_win = self.param['stop_win']

        #other params
        self.last_long_res = -999
        self.last_short_res = -999

        #records
        self.records = {'timestamp': [], 'longs': [], 'shorts': [],
                        'long_mean': [], 'short_mean': [],
                        'long_sd': [], 'short_sd':[]}

        #tracker
        self.tracker = TradeAnalysis(self.pair.x)
Exemplo n.º 4
0
    def param_updated(self):
        # make sure parent updates its param
        super(SMAAlgo, self).param_updated()

        # create rolling
        self.long_roll = SimpleMoving(size=self.param['rolling'])
        self.short_roll = SimpleMoving(size=self.param['rolling'])
        self.spreadx_roll = SimpleMoving(size = self.param['rolling'])
        self.spready_roll = SimpleMoving(size = self.param['rolling'])

        #params
        self.bollinger = self.param['bollinger']
        self.block = self.param['block']
        self.stop_win = self.param['stop_win']

        #other params
        self.last_long_res = -999
        self.last_short_res = -999

        #records
        self.records = {'timestamp': [], 'longs': [], 'shorts': [],
                        'long_mean': [], 'short_mean': [],
                        'long_sd': [], 'short_sd':[]}

        self.max_profit = 0

        #tracker
        self.tracker = TradeAnalysis(self.pair.x)
Exemplo n.º 5
0
Arquivo: czce.py Projeto: Coderx7/CNN
    def param_updated(self):
        # make sure parent updates its param
        super(StopWinAlgo, self).param_updated()

        # algo settings
        self.if_ema = self.param['if_ema'] # if false, use sma
        self.if_stop_win = self.param['if_stop_win'] #if false, don't stop win
        self.if_consider_spread = self.param['if_consider_spread'] #if false, don't consider spread and fee

        # create rolling
        self.long_roll = SimpleMoving(size=self.param['rolling'])
        self.short_roll = SimpleMoving(size=self.param['rolling'])
        self.long_autoreg = Autoregressive(alpha = self.param['alpha'])
        self.short_autoreg = Autoregressive(alpha = self.param['alpha'])
        self.spreadx_roll = SimpleMoving(size = self.param['rolling'])
        self.spready_roll = SimpleMoving(size = self.param['rolling'])

        self.bollinger = self.param['bollinger']
        self.block = self.param['block']
        self.stop_win = self.param['stop_win']

        #other params
        self.last_long_res = -999
        self.last_short_res = -999

        #records
        self.records = {'timestamp': [], 'longs': [], 'shorts': [],
                        'long_mean': [], 'short_mean': [],
                        'long_sd': [], 'short_sd':[]}

        #tracker
        self.tracker = TradeAnalysis(self.pair.x)
Exemplo n.º 6
0
def get_tracker(date_list, product):
    pair = 0
    for date in date_list:
        pair = get_best_pair(date,market, product)
        if type(pair) != tuple:
            continue
        else:
            break
    return TradeAnalysis(Contract(pair[0]))
Exemplo n.º 7
0
Arquivo: au_OU.py Projeto: Coderx7/CNN
def back_test(pair, date, param):
    tracker = TradeAnalysis(Contract(pair[0]))
    algo = {"class": OUAlgo}
    algo["param"] = {
        "x": pair[0],
        "y": pair[1],
        "a": 1,
        "b": 0,
        "rolling": param[0],
        "bollinger": param[1],
        "block": 100,
        "tracker": tracker,
    }
    settings = {"date": date, "path": DATA_PATH, "tickset": "top", "algo": algo, "singletick": True}
    runner = PairRunner(settings)
    runner.run()
    account = runner.account
    history = account.history.to_dataframe(account.items)
    score = float(history[["pnl"]].iloc[-1])
    order_win = tracker.order_winning_ratio()
    order_profit = tracker.analyze_all_profit()[0]
    num_rounds = tracker.analyze_all_profit()[2]
    return score, order_win, order_profit, num_rounds
Exemplo n.º 8
0
Arquivo: shfe.py Projeto: Coderx7/CNN
    def param_updated(self):
        # make sure parent updates its param
        super(StopWinAlgo, self).param_updated()

        # algo settings
        self.if_ema = self.param["if_ema"]  # if false, use sma
        self.if_stop_win = self.param["if_stop_win"]  # if false, don't stop win
        self.if_consider_spread = self.param["if_consider_spread"]  # if false, don't consider spread and fee

        # create rolling
        self.long_roll = SimpleMoving(size=self.param["rolling"])
        self.short_roll = SimpleMoving(size=self.param["rolling"])
        self.long_autoreg = Autoregressive(alpha=self.param["alpha"])
        self.short_autoreg = Autoregressive(alpha=self.param["alpha"])
        self.spreadx_roll = SimpleMoving(size=self.param["rolling"])
        self.spready_roll = SimpleMoving(size=self.param["rolling"])

        self.bollinger = self.param["bollinger"]
        self.block = self.param["block"]
        self.stop_win = self.param["stop_win"]

        # other params
        self.last_long_res = -999
        self.last_short_res = -999

        # records
        self.records = {
            "timestamp": [],
            "longs": [],
            "shorts": [],
            "long_mean": [],
            "short_mean": [],
            "long_sd": [],
            "short_sd": [],
        }

        # tracker
        self.tracker = TradeAnalysis(self.pair.x)
Exemplo n.º 9
0
class StopWinAlgo(PairAlgoWrapper):

    # called when algo param is set
    def param_updated(self):
        # make sure parent updates its param
        super(StopWinAlgo, self).param_updated()

        # algo settings
        self.if_ema = self.param['if_ema']  # if false, use sma
        self.if_stop_win = self.param['if_stop_win']  #if false, don't stop win
        self.if_consider_spread = self.param[
            'if_consider_spread']  #if false, don't consider spread and fee

        # create rolling
        self.long_roll = SimpleMoving(size=self.param['rolling'])
        self.short_roll = SimpleMoving(size=self.param['rolling'])
        self.long_autoreg = Autoregressive(alpha=self.param['alpha'])
        self.short_autoreg = Autoregressive(alpha=self.param['alpha'])
        self.spreadx_roll = SimpleMoving(size=self.param['rolling'])
        self.spready_roll = SimpleMoving(size=self.param['rolling'])

        self.bollinger = self.param['bollinger']
        self.block = self.param['block']
        self.stop_win = self.param['stop_win']

        #other params
        self.last_long_res = -999
        self.last_short_res = -999

        #records
        self.records = {
            'timestamp': [],
            'longs': [],
            'shorts': [],
            'long_mean': [],
            'short_mean': [],
            'long_sd': [],
            'short_sd': []
        }

        #tracker
        self.tracker = TradeAnalysis(self.pair.x)

    # what to do on every tick
    def on_tick(self, multiple, contract, info):

        self.tracker.tick_pass_by()  # tell the tracker that one tick passed by
        # skip if price_table doesnt have both
        if len(self.price_table.table) < 2:
            return

        # get residuals and position
        long_res = self.pair.get_long_residual()
        short_res = self.pair.get_short_residual()
        pos = self.position_y()

        ## only do this when plotting is neede
        #update record
        #         if self.if_ema:
        #             self._update_record(long_res, self.autoreg.mean, self.long_roll.sd,\
        #                             short_res, self.autoreg.mean, self.short_roll.sd)
        #         else:
        #             self._update_record(long_res, self.long_roll.mean, self.long_roll.sd,\
        #                             short_res, self.short_roll.mean, self.short_roll.sd)

        #calculate profit for this round
        profit = 0
        if pos == -1:
            profit = long_res + self.last_short_res
        elif pos == 1:
            profit = short_res + self.last_long_res

        #two spread
        spreadx = self.spreadx_roll.mean
        spready = self.spready_roll.mean
        avg_spread = (spreadx + spready) / 2

        #fee
        fee = self.pair.get_fee()

        # stop short position
        if self.if_stop_win:
            if pos == -1:
                if (profit >= max(1, self.stop_win * self.long_roll.sd) and self.if_consider_spread == False) \
                   or (profit >= max(1, self.stop_win * self.long_roll.sd, fee) and self.if_consider_spread == True):
                    self.long_y(y_qty=1)
                    self.last_long_res = long_res
                    self.tracker.close_with_stop(profit)
                    return

            # stop long position
            if pos == 1:
                if (profit >= max(1, self.stop_win * self.long_roll.sd) and self.if_consider_spread == False) \
                   or (profit >= max(1, self.stop_win * self.long_roll.sd, fee) and self.if_consider_spread == True):
                    self.short_y(y_qty=1)
                    self.last_short_res = short_res
                    self.tracker.close_with_stop(profit)
                    return

        # open or close position
        # action only when unblocked: bock size < rolling queue size
        if self.long_roll.queue.qsize() > self.block:
            # long when test long_res > mean+bollinger*sd
            if (long_res > self.long_autoreg.mean + self.bollinger * self.long_roll.sd \
                and self.if_ema == True and self.if_consider_spread == False) \
               or (self.long_roll.test_sigma(long_res, self.bollinger) \
                   and self.if_ema == False and self.if_consider_spread == False) \
               or (long_res - self.long_autoreg.mean > max(fee + avg_spread, self.bollinger * self.long_roll.sd) \
                   and self.if_ema == True and self.if_consider_spread == True) \
               or (self.long_roll.test_sigma(long_res, self.bollinger) \
                   and long_res - self.long_roll.mean > fee + avg_spread \
                   and self.if_ema == False and self.if_consider_spread == True):                 \
                # only long when position is 0 or -1

                if pos <= 0:
                    self.long_y(y_qty=1)
                    self.last_long_res = long_res

                    #tell the tracker
                    if pos == 0:
                        self.tracker.open_position()
                    else:
                        self.tracker.close_with_exit(profit)

                    return

            # short when test short_res > mean+bollinger*sd
            elif (short_res > self.short_autoreg.mean + self.bollinger * self.short_roll.sd \
                  and self.if_ema == True and self.if_consider_spread == False) \
                 or (self.short_roll.test_sigma(short_res, self.bollinger) \
                     and self.if_ema == False and self.if_consider_spread == False) \
                 or (short_res - self.short_autoreg.mean > max(fee + avg_spread, self.bollinger * self.short_roll.sd) \
                     and self.if_ema == True and self.if_consider_spread == True) \
                 or (self.short_roll.test_sigma(short_res, self.bollinger) \
                     and short_res - self.short_roll.mean > fee + avg_spread \
                     and self.if_ema == False and self.if_consider_spread == True):                 \
                # only short when position is 0 or 1

                if pos >= 0:
                    self.short_y(y_qty=1)
                    self.last_short_res = short_res

                    #tell the tracker
                    if pos == 0:
                        self.tracker.open_position()
                    else:
                        self.tracker.close_with_exit(profit)

                    return
            else:
                pass

        # update rolling
        self.long_roll.add(long_res)
        self.short_roll.add(short_res)
        self.long_autoreg.add(long_res)
        self.short_autoreg.add(short_res)
        self.spreadx_roll.add(self.pair.get_spread_x())
        self.spready_roll.add(self.pair.get_spread_y())

    def on_daystart(self, date, info_x, info_y):
        # recreate rolling at each day start
        self.long_roll = SimpleMoving(size=self.param['rolling'])
        self.short_roll = SimpleMoving(size=self.param['rolling'])
        self.long_autoreg = Autoregressive(alpha=self.param['alpha'])
        self.short_autoreg = Autoregressive(alpha=self.param['alpha'])
        self.spreadx_roll = SimpleMoving(size=self.param['rolling'])
        self.spready_roll = SimpleMoving(size=self.param['rolling'])

    def on_dayend(self, date, info_x, info_y):
        #force close on day end
        pos = self.position_y()
        # stop short position
        if pos == -1:
            self.long_y(y_qty=1)
            return

        # stop long position
        if pos == 1:
            self.short_y(y_qty=1)
            return

    def _update_record(self, long_res, long_mean, long_std, short_res,
                       short_mean, short_std):
        self.records['timestamp'].append(Clock.timestamp)
        self.records['longs'].append(long_res)
        self.records['shorts'].append(short_res)
        self.records['long_mean'].append(long_mean)
        self.records['short_mean'].append(short_mean)
        self.records['long_sd'].append(long_std)
        self.records['short_sd'].append(short_std)
Exemplo n.º 10
0
Arquivo: shfe.py Projeto: Coderx7/CNN
class StopWinAlgo(PairAlgoWrapper):

    # called when algo param is set
    def param_updated(self):
        # make sure parent updates its param
        super(StopWinAlgo, self).param_updated()

        # algo settings
        self.if_ema = self.param["if_ema"]  # if false, use sma
        self.if_stop_win = self.param["if_stop_win"]  # if false, don't stop win
        self.if_consider_spread = self.param["if_consider_spread"]  # if false, don't consider spread and fee

        # create rolling
        self.long_roll = SimpleMoving(size=self.param["rolling"])
        self.short_roll = SimpleMoving(size=self.param["rolling"])
        self.long_autoreg = Autoregressive(alpha=self.param["alpha"])
        self.short_autoreg = Autoregressive(alpha=self.param["alpha"])
        self.spreadx_roll = SimpleMoving(size=self.param["rolling"])
        self.spready_roll = SimpleMoving(size=self.param["rolling"])

        self.bollinger = self.param["bollinger"]
        self.block = self.param["block"]
        self.stop_win = self.param["stop_win"]

        # other params
        self.last_long_res = -999
        self.last_short_res = -999

        # records
        self.records = {
            "timestamp": [],
            "longs": [],
            "shorts": [],
            "long_mean": [],
            "short_mean": [],
            "long_sd": [],
            "short_sd": [],
        }

        # tracker
        self.tracker = TradeAnalysis(self.pair.x)

    # what to do on every tick
    def on_tick(self, multiple, contract, info):

        self.tracker.tick_pass_by()  # tell the tracker that one tick passed by
        # skip if price_table doesnt have both
        if len(self.price_table.table) < 2:
            return

        # get residuals and position
        long_res = self.pair.get_long_residual()
        short_res = self.pair.get_short_residual()
        pos = self.position_y()

        ## only do this when plotting is neede
        # update record
        #         if self.if_ema:
        #             self._update_record(long_res, self.autoreg.mean, self.long_roll.sd,\
        #                             short_res, self.autoreg.mean, self.short_roll.sd)
        #         else:
        #             self._update_record(long_res, self.long_roll.mean, self.long_roll.sd,\
        #                             short_res, self.short_roll.mean, self.short_roll.sd)

        # calculate profit for this round
        profit = 0
        if pos == -1:
            profit = long_res + self.last_short_res
        elif pos == 1:
            profit = short_res + self.last_long_res

        # two spread
        spreadx = self.spreadx_roll.mean
        spready = self.spready_roll.mean
        avg_spread = (spreadx + spready) / 2

        # fee
        fee = self.pair.get_fee()

        # stop short position
        if self.if_stop_win:
            if pos == -1:
                if (profit >= max(1, self.stop_win * self.long_roll.sd) and self.if_consider_spread == False) or (
                    profit >= max(1, self.stop_win * self.long_roll.sd, fee) and self.if_consider_spread == True
                ):
                    self.long_y(y_qty=1)
                    self.last_long_res = long_res
                    self.tracker.close_with_stop(profit)
                    return

            # stop long position
            if pos == 1:
                if (profit >= max(1, self.stop_win * self.long_roll.sd) and self.if_consider_spread == False) or (
                    profit >= max(1, self.stop_win * self.long_roll.sd, fee) and self.if_consider_spread == True
                ):
                    self.short_y(y_qty=1)
                    self.last_short_res = short_res
                    self.tracker.close_with_stop(profit)
                    return

        # open or close position
        # action only when unblocked: bock size < rolling queue size
        if self.long_roll.queue.qsize() > self.block:
            # long when test long_res > mean+bollinger*sd
            if (
                (
                    long_res > self.long_autoreg.mean + self.bollinger * self.long_roll.sd
                    and self.if_ema == True
                    and self.if_consider_spread == False
                )
                or (
                    self.long_roll.test_sigma(long_res, self.bollinger)
                    and self.if_ema == False
                    and self.if_consider_spread == False
                )
                or (
                    long_res - self.long_autoreg.mean > max(fee + avg_spread, self.bollinger * self.long_roll.sd)
                    and self.if_ema == True
                    and self.if_consider_spread == True
                )
                or (
                    self.long_roll.test_sigma(long_res, self.bollinger)
                    and long_res - self.long_roll.mean > fee + avg_spread
                    and self.if_ema == False
                    and self.if_consider_spread == True
                )
            ):
                # only long when position is 0 or -1
                if pos <= 0:
                    self.long_y(y_qty=1)
                    self.last_long_res = long_res

                    # tell the tracker
                    if pos == 0:
                        self.tracker.open_position()
                    else:
                        self.tracker.close_with_exit(profit)

                    return

            # short when test short_res > mean+bollinger*sd
            elif (
                (
                    short_res > self.short_autoreg.mean + self.bollinger * self.short_roll.sd
                    and self.if_ema == True
                    and self.if_consider_spread == False
                )
                or (
                    self.short_roll.test_sigma(short_res, self.bollinger)
                    and self.if_ema == False
                    and self.if_consider_spread == False
                )
                or (
                    short_res - self.short_autoreg.mean > max(fee + avg_spread, self.bollinger * self.short_roll.sd)
                    and self.if_ema == True
                    and self.if_consider_spread == True
                )
                or (
                    self.short_roll.test_sigma(short_res, self.bollinger)
                    and short_res - self.short_roll.mean > fee + avg_spread
                    and self.if_ema == False
                    and self.if_consider_spread == True
                )
            ):
                # only short when position is 0 or 1
                if pos >= 0:
                    self.short_y(y_qty=1)
                    self.last_short_res = short_res

                    # tell the tracker
                    if pos == 0:
                        self.tracker.open_position()
                    else:
                        self.tracker.close_with_exit(profit)

                    return
            else:
                pass

        # update rolling
        self.long_roll.add(long_res)
        self.short_roll.add(short_res)
        self.long_autoreg.add(long_res)
        self.short_autoreg.add(short_res)
        self.spreadx_roll.add(self.pair.get_spread_x())
        self.spready_roll.add(self.pair.get_spread_y())

    def on_daystart(self, date, info_x, info_y):
        # recreate rolling at each day start
        self.long_roll = SimpleMoving(size=self.param["rolling"])
        self.short_roll = SimpleMoving(size=self.param["rolling"])
        self.long_autoreg = Autoregressive(alpha=self.param["alpha"])
        self.short_autoreg = Autoregressive(alpha=self.param["alpha"])
        self.spreadx_roll = SimpleMoving(size=self.param["rolling"])
        self.spready_roll = SimpleMoving(size=self.param["rolling"])

    def on_dayend(self, date, info_x, info_y):
        # force close on day end
        pos = self.position_y()
        # stop short position
        if pos == -1:
            self.long_y(y_qty=1)
            return

        # stop long position
        if pos == 1:
            self.short_y(y_qty=1)
            return

    def _update_record(self, long_res, long_mean, long_std, short_res, short_mean, short_std):
        self.records["timestamp"].append(Clock.timestamp)
        self.records["longs"].append(long_res)
        self.records["shorts"].append(short_res)
        self.records["long_mean"].append(long_mean)
        self.records["short_mean"].append(short_mean)
        self.records["long_sd"].append(long_std)
        self.records["short_sd"].append(short_std)
Exemplo n.º 11
0
class SMAAlgo(PairAlgoWrapper):

    # called when algo param is set
    def param_updated(self):
        # make sure parent updates its param
        super(SMAAlgo, self).param_updated()

        # create rolling
        self.long_roll = SimpleMoving(size=self.param['rolling'])
        self.short_roll = SimpleMoving(size=self.param['rolling'])
        self.spreadx_roll = SimpleMoving(size = self.param['rolling'])
        self.spready_roll = SimpleMoving(size = self.param['rolling'])

        #params
        self.bollinger = self.param['bollinger']
        self.block = self.param['block']
        self.stop_win = self.param['stop_win']

        #other params
        self.last_long_res = -999
        self.last_short_res = -999

        #records
        self.records = {'timestamp': [], 'longs': [], 'shorts': [],
                        'long_mean': [], 'short_mean': [],
                        'long_sd': [], 'short_sd':[]}

        self.max_profit = 0

        #tracker
        self.tracker = TradeAnalysis(self.pair.x)

    def on_tick(self, multiple, contract, info):
        self.tracker.tick_pass_by()
        # skip if price_table doesnt have both, TODO fix this bug internally
        if len(self.price_table.table) < 2:
            return

        # get residuals and position
        long_res = self.pair.get_long_residual()
        short_res = self.pair.get_short_residual()
        pos = self.position_y()

        #two spread
        spreadx = self.spreadx_roll.mean
        spready = self.spready_roll.mean
        avg_spread = (spreadx + spready)/2

        #fee
        fee = self.pair.get_fee()

        #update record
#         self._update_record(long_res, self.long_roll.mean, self.long_roll.sd,\
#                             short_res, self.short_roll.mean, self.short_roll.sd)

        #calculate profit
        profit = 0
        if pos == -1:
            profit = long_res + self.last_short_res
        elif pos == 1:
            profit = short_res + self.last_long_res

        #trailing stop win
        if profit > self.max_profit and profit > 0:
            self.max_profit = profit
        else:
            # stop short position
            if pos == -1:
                if self.max_profit - profit > max(1,self.stop_win * self.long_roll.sd) and profit > 0:
                    self.long_y(y_qty = 1)
                    self.last_long_res = long_res
                    self.tracker.close_with_stop(profit - fee)
                    return

            # stop long position
            if pos == 1:
                if self.max_profit - profit > max(1,self.stop_win * self.short_roll.sd) and profit > 0:
                    self.short_y(y_qty = 1)
                    self.last_short_res = short_res
                    self.tracker.close_with_stop(profit - fee)
                    return

        # action only when unblocked: bock size < rolling queue size
        if self.long_roll.queue.qsize() > self.block:
            # long when test long_res > mean+bollinger*sd
            if self.long_roll.test_sigma(long_res, self.bollinger) \
               and long_res > self.long_roll.mean + avg_spread + fee/2:
                # only long when position is 0 or -1
                if pos <= 0:
                    self.long_y(y_qty=1)
                    self.last_long_res = long_res

                    self.max_profit = 0

                    #tell the tracker
                    if pos == 0:
                        self.tracker.open_position()
                    else:
                        self.tracker.close_with_exit(profit - fee)

                    return

            # short when test short_res > mean+bollinger*sd
            elif self.short_roll.test_sigma(short_res, self.bollinger) \
                 and short_res > self.short_roll.mean + avg_spread + fee/2:
                # only short when position is 0 or 1
                if pos >= 0:
                    self.short_y(y_qty=1)
                    self.last_short_res = short_res

                    self.max_profit = 0

                    #tell the tracker
                    if pos == 0:
                        self.tracker.open_position()
                    else:
                        self.tracker.close_with_exit(profit - fee)

                    return
            else:
                pass


        # update rolling
        self.long_roll.add(long_res)
        self.short_roll.add(short_res)

        self.spreadx_roll.add(self.pair.get_spread_x())
        self.spready_roll.add(self.pair.get_spread_y())

    def on_daystart(self, date, info_x, info_y):
        # recreate rolling at each day start
        self.long_roll = SimpleMoving(size=self.param['rolling'])
        self.short_roll = SimpleMoving(size=self.param['rolling'])

        self.spreadx_roll = SimpleMoving(size = self.param['rolling'])
        self.spready_roll = SimpleMoving(size = self.param['rolling'])

    def on_dayend(self, date, info_x, info_y):
        pos = self.position_y()
        # stop short position
        if pos == -1:
            self.long_y(y_qty = 1)
            return

        # stop long position
        if pos == 1:
            self.short_y(y_qty = 1)
            return

    def _update_record(self, long_res, long_mean, long_std, short_res, short_mean, short_std):
        self.records['timestamp'].append(Clock.timestamp)
        self.records['longs'].append(long_res)
        self.records['shorts'].append(short_res)
        self.records['long_mean'].append(long_mean)
        self.records['short_mean'].append(short_mean)
        self.records['long_sd'].append(long_std)
        self.records['short_sd'].append(short_std)