I would put a filter for a single month without putting a specific day.

I would put a filter for a single month without putting a specific day.

 ML_01_Last = Stock1[Fecha == '01-Jan-2014'].count();

I would put a filter for a single month without putting a specific day.   ML_01_Last = Stock1[Fecha == 'Jan-2014'].count();

The filter should be something, but I'm not sure how.