The meaning of the Word “stock” changes, depending on where you are. In the USA (Estados Unidos) it means “Capital”. Money invested in the company by investors. In Britain, it means inventory. Product you have with the intention of selling. So, what do British people say for stock in the sense of money invested into the business? They say “Share Capital”.
Breakeven: Breakeven is the point where sales equals costs and profits are zero. Our pessimistic objective this year is to break even. The Margin of Safety is by how much Reveune exceeds breaken point. If breakeven sales are 15000 euros, and sales are 18000 euros, then the margin of safety is 3000 euros.