The 5 richest Americans are already $67-billion richer

Since January 1, the US’s five richest people have added a combined $66.8 billion to their personal fortunes. Four of those individuals—Bill Gates, Jeff Bezos, Mark Zuckerberg and Larry Ellison—are founders of iconic technology firms. The last is legendary value investor Warren Buffett. Though each member of the top five holds a distinct portfolio, the gains are all generally attributable to excellent returns on public markets. Here is a look:

Key Takeaways:

• Overall market performance has been strong this year. The Nasdaq Composite Index has returned 18%, while the Dow Jones Industrial Average has