Hello BorsBamse,
If I hadn't already been destroyed 2 times this year on this spread, perhaps I would consider it. Your points and methodology are valid. IMO It has a positive expectancy.
A few remarks though :
- Why are using 2 differents expiries? You are another layer of uncertainty. Some considerations linked to the specific expiry, external to your logic, may influence the spread now. In this case, it's OK since they are of the same crop and consecutive, but still...
- Warehouse stocks of SRW are way lower than HRW.
- Seasonals are on your side but the stats are not super convincing.