Suppose I have 1,000 assets in assets list.
What I want to do is to calculate the trading signals for only different 100 assets in each year, not all assets.
Definitly while(asset(loop(Assets))) is not the right solution. Because it loops all assets.
Picking sub assets in while loop cause error. (don't know why, maybe someone can explain this? I suspect all assets need sync.)
How can I solve this?