Should’ve invest in “Sandoz”

I studied commerce after finishing year 12 , and worked in the industry for almost 10 years. I do not really fit the artist stereotype that is not versed in the financial world and how it all works. It is the opposite really- i have a CPA to prove it ; so I thought it is funny that a couple of decades later, when I am out of the corporate world my partner said that I should have invested in Sandoz - cos of how much money we poured into it buying my daily medications.