The Big Four, also known as Big Tech, The Tech Giants or Our Lords and Masters (we only half joke) is the name used to describe the four largest, most dominant and most powerful companies in the US tech industry. The club consist of Alphabet (Google), Amazon, Apple, and Meta (Facebook). Though recently, people have also added Microsoft to the list too, to make the Big Five. Remember, this is just our list. Make sure you DYOR before you trade.