Hello, everyone.

I am not new to use Statalist, but this is the first time I am not sure I find an answer from Statalist. So, I would like to ask all resourceful experts my question. And I am going to try to make it understandable.

I have not had my dataset, I am still trying to identify the ideal methodology for my research question. For now, I can just tell that logit is what I sense the most suitable method.

In my research question, the dependent variable (LHS) is ' investment behavior', i.e. buying, selling, shortselling and saving. The explanatory side (RHS) will have at least 10 variables (majority of them will be dummy and ordinal). The dataset will be definitely a panel. My problem exists for LHS now.

Since people can trade simultaneously (e.g. buying and selling at the same time; shortselling, buying and saving at the same time), so the ordered logit and multinomial logit should be excluded from my options, right?

Now, I think that will be make sense if I construct the dependent variables like the below:
Only Buy, Only Sell, Only Shortsell, Only Save, Buy+Sell, Buy+Shortsell, Buy+Save ... and Buy+Sell+Shortsell+Save. In total, I will have 15 binary outcome as my dependent variable.

So I try to find the command in stata to run these dependent variable simultaneously in logit regression , but I didn't find the option. Or should I run all these 15 dependent variables separately?Also, when I search online, almost all results are showing multinomial logit regression.

I am confused and do not know if this variable construction is applicable for any logit model or not. If it does not work this way, any suggestions to construct my dependent variable?

Many thanks in advance,
Bing