Thank you for sharing this! I appreciate it as it gives me the possibility to compare with what I'm using.
If you are using four metals this means 4% per instrument. Energies two instruments, so 4% per instrument. STIR 4%. If I remember correctly are you using a larger number of instruments in the other classes, so the percentage per instrument will be lower.
I used the handicraft method which you describe in your book. However, I saw in the appendix that the correlation between STIR and bonds is 0.5. And the correlation between equities and Vol 0.6. I thought that those correlations were not extremely high so I did not cluster these into "superclasses". Which made me end up with equal weight for each of the classes you mention. Now, after running the system for two years and having gained some more insight in these instruments, I start to see that it does make sense to create such superclasses.
Later in time, when IB raised margin requirements on V2TX, I decided to reduce its weight (I don't use VIX as the contract size and associated value volatility is too large for my account). I use 5% for it currently. So that was not driven by portfolio optimization, but by margin consumption. High usage of margin by V2TX prevented other positions to be opened or expanded as IB started blocking order lines. Thus causing a deviation between the desired portfolio and the actual portfolio. By trial and error I found that this deviation became negligible when using 5% weight for V2TX.
I used Pysystemtrade for weights and everything else, for 1 instrument in each class it gave me these weights:
kinda makes sense I guess, nothing too weird..
Still paper-trading it btw, need to save some more money before I can blow it
) Planning to start in the beginning of the new year on 120k base capital and 22% target volatility (lower than that and some instruments are struggling to get 2 contracts max positions even on the maximum forecast with thresholting..), in time will add some more capital and instruments ..
Also, automatic rolls based on the pre-recorded calendar for 90 years ahead (don't plan on living longer
) seem to work well (every instrument has a soft and hard roll periods based on historical volume and exp. dates + during the soft-roll in real time the system is checking that the new contract has at least 1% volume of the previous one..)., it's because of another dug the system sold ~25 contract of platinum around Aug 16 and lost 9k - so it's a good idea to try that "software miracle" in paper first
)Is it sort of true btw that for every additional instrument you roughly need +10k capital?