Hi Ujae,

The handle_data method name is reserved and is called either every day or every minute depending on which mode you run the code in. If you would like to schedule a function to run once a day, regardless of the mode you are in, all you have to do is change your code to look like this:

def initialize(context):  
        # Rebalance daily at market open  
    schedule_function(rebalance, date_rule=date_rules.every_day(),  
                      time_rule=time_rules.market_open(minutes = 15))  
    context.switch = True  
    #pass

#reserved function name, don't want it to do anything  
def handle_data(context, data):  
    pass

# Will be called on every trade event for the securities you specify.  
def rebalance(context, data):  
    # Implement your algorithm logic here.

    # data[sid(X)] holds the trade event data for that security.  
    # context.portfolio holds the current portfolio state.

    # Place orders with the order(SID, amount) method.

    # TODO: implement your own logic here.  

    if context.switch == True:  
        order_target_percent(sid(8554), 1)  
        context.switch = False  
    else:  
        order_target_percent(sid(8554), -1)  
        context.switch = True  

    record(leverage = context.account.leverage)  
    # track how many positions we're holding  
    record(num_positions = len(context.portfolio.positions))  

This should do the trick!

Thank you very much!

For convenience, I've run a backtest using this code so others can clone the algorithm if they would like.

Hi Jamie,

Sorry for the dumb questions. I am a beginner the Q.

I want to execute the trades whenever the specified criteria meets in the algorithm. As per the Quantopian2, the open positions will be closed at the end of the every trading day. But i want to execute the trades as below.
1) How to Execute the trades with an interval of 1 min or 5 min or 15 min when the specified condition has been met? Does it needs the Scheduler_function (rebalance) ?
2) Can we execute the trades with in a minute like 15 s or 30 s range?
3) How can I Sell or Cover all the positions at the end of the every trading day (even if does not meet my criteria - as i do not want to hold overnight) ?

Thanks for the help.