50/50 ownership of an airline

I have just seen an airline on an older game world with the stock system, whereby 2 people hold exactly 50/50 stocks, to the individual stock, something like 1,865,150 each

Who has control?

Whoever has the one extra share. They will also be shown as managing director

There is no “extra share”. I was the founder of the airline. That is the reason why i have the full control. It was just a “try” (as many other things in AS too) and it worked perfect.