How to enable ExtendedMarketHours in a Jupyter notebooks environment? I am trying to do some research on pre-market and after-market price in the Jupyter notebook. I tried the following code lines but all historical data are in the range of 9:30am-4pm. Is it possible to change the QCAlgorithm default on extendedMarketHours in the Jupyter notebooks environment? 

qb = QuantBook()
qb.UniverseSettings.ExtendedMarketHours = True  
qb.extendedMarketHours = True  
stock= qb.AddEquity( 'AAPL' , extendedMarketHours = True)
history = qb.History(stock.Symbol, start_time, end_time, Resolution.Minute, extendedMarketHours = True)