Mikä pääaine (major)?

So I have yet to decide what major should I pick. I am interested about entrepreneurship, investing (stock market and real estate) and management. Do you guys have any recommendations and why? I have thinked about going to study abroad, but my main options right now are the US, the UK and Finland. shortly in Finnish, mikä aine kannattaa valita, jos kiinnostaa yrittäminen, sijoittaminen ja johtaminen?