The period covers all my trades in the current financial year so far - April 01, 2019 to July 19. 2019. Except for 4 or 5 days, I have traded on all the trading days this year.
Current Money Management:
- The Kelly Criterion is my guideline for position sizing. I calculate the Kelly Criterion Optimal Risk dynamically based on the historical performance of my trades. The value of the Optimal Risk varies drastically for each set of data that I analyze - see an example of the variability of the Kelly Criterion in the graph here. So, Kelly Criterion is more of a guideline than a fixed value.
- This year, additional margin requirements have been imposed by the exchange on which I trade - NSE. These margin restrictions do not allow me to bet the Kelly Optimal Position Size even if I want to. Also, I have recently become aware of the benefits Fractional Kelly in reducing Volatility Drag. So, betting a fraction of the Optimal Position Size is what I do.
- Whenever I end a day in profit, I usually transfer out a part of the profits to my bank (I call it Dividend 😀). Whenever I end a day in a loss, I usually transfer in some money from my bank into my trading account (I call it Dividend Reinvestment 😀). So, whatever I am doing is slightly different from classic Kelly Money Management.
Backtesting the Money Management:
I tested the data in my trading ledger by varying the fraction of my daily profit that I transferred out to the bank account, and the fraction of my daily loss that I compensated for by transferring money in from my bank account to my trading account.Here are the results of the backtest (all amounts in Indian Rupees):
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| Profit and Net Dividend vs. Transfer In/Transfer Out combinations |
The first table shows the Profit that could have been achieved for different fractions of P&L transferred in/out. The second table shows the Net Dividend (Transferred Out - Transferred In) for different fractions of P&L transferred in/out.
I have blanked out all combinations of Transfer In/Transfer Out that would have resulted in:
- A final Trading Account Balance lower that my initial Trading Account Balance, and/or
- A negative Net Dividend on any day of the backtest.
The lower left portions of the tables are empty because those combinations result in negative Net Dividends. The upper right portions of the tables are empty because those combinations result in lower final Trading Account Balances.
I have also highlighted (in yellow) the 5 best results for Profit and Net Dividend. These values are somewhat higher than the actual results that I achieved. I am neither a mathematician nor a statistician, and haven't analyzed this further... but one thought that occurs is whether this Transfer In/Transfer Out method can improve the performance of Fractional Position Sizing based Money Management.
I am not aware if there has been any study on this type of Money Management... and to that extent this is my original research. You bet I'll analyze this further. Right now, these are just observation from a backtest result and there are no definite conclusions that I can present.