Getting empty result when using fractional "size" variable.

[agalegov]

Hey!

So i am tryin simple momentum strategy on BTC/USD data. When i define size as a wholenumber, backtest run just fine. But when i try to define it as a fraction of equity, i get empty results like this:

This is how i run the code:

`class MomTrade(Strategy):
# Define timeperiod for momentum
n = 15

def init(self):
    # Precompute Momentum indicator
    self.MOM = self.I(MOM, self.data.Close, self.n)
    self.MOM1 = self.I(MOM, self.MOM, 1)

def next(self):
    # If mom crosses 0, close any existing short trades, and buy the asset
    if crossover(self.MOM, 0): # and self.MOM1 > 0:
        self.position.close()
        self.buy(stop=self.data.High+0.01, size = 0.1)


    # Else, if momentum crosses 0 fron the top, reverse the position
    elif crossover(0, self.MOM): #and self.MOM1 < 0:
        self.position.close()
        self.sell(stop=self.data.Low+0.01, size = 0.1)

bt = Backtest(df, MomTrade, cash=100000, commission=0)
stats = bt.run()
display(stats)`

What am i doing wrong?

[kernc]

Equity Final [$] indicates you were, in fact, running it all with cash=10_000, which likely isn't sufficient for a unit of bitcoin in this time period.

See also: #134