Sharpe Ratio by Year

cwse

Hi,

Is it possible for the Sharpe Ratio analyzer to produce a table of the sharpe ratios per year? At present I can only produce a single sharpe ratio figure for all the years of data (I am looking at about 15 years, so would like 15 SRs). Eg:

Year 1: SR1
Year 2: SR2
Year 3: SR3...

Current Sharpe ratio code:

cerebro.addanalyzer(bt.analyzers.SharpeRatio, timeframe=bt.TimeFrame.Years, riskfreerate=0.03, annualize=True)
sharperatio = strat0.analyzers.getbyname('sharperatio')
sharperatio.get_analysis()

Thanks!
cwse

backtrader

Such thing doesn't exist. The 1st thing you would have to define is in which sub-year timeframe the results would be calculated, to then produce the Sharpe Ratio of that year for that selected timeframe.

cwse

@backtrader I would ideally like the same output as "Time Return" which gives by year. Is there a simple way I can code this using the existing SharpeRatio analyzer?

backtrader

Of course, TimeReturn produces a per year result, because a return needs only 2 values, the starting and ending values and it doesn't matter if there is no variability, there is no division by zero.

The SharpeRatio needs at least 2 return values and they have to be different. That's why it is usually done on a multiyear basis.

To get a yearly Sharpe Ratio you have to work with timeframes below Years.

@cwse said in Sharpe Ratio by Year:

Is there a simple way I can code this using the existing SharpeRatio analyzer?

No.