mark zuckerberg

After Facebook Inc (NASDAQ:FB)’s record-low week, its CEO, Mark Zuckerberg, is also feeling the pain. With his company’s stock falling 4 percent to $20.04 on Thursday, Zuckerberg also watched his personal fortune fall $423 million, but he still has a little net worth left in the bank at $10.2 billion.

With this figure, the 28-year-old has exited the ranks as one of the top 10 wealthiest technology billionaires. According to Bloomberg, at No. 11, he lags behind No. 10 James Goodnight, the co-founder of the privately-owned SAS Institute Inc., by about $400 million.

So is Zuckerberg likely upset by the news? Probably not so much.

Ron Florance, managing director of investment strategy for Wells Fargo Private Bank, offered this take via Bloomberg: “From an emotional standpoint, he might care. He’s much more worried about maintaining Facebook’s market share in the social media space, than the day- to-day valuation swings of his company stock. He’s not worried about going broke.”

Should Facebook’s stock continue its decline (a 47 percent fall since is May 18 IPO), what effect will this have monetarily on Zuckerberg?

His fortune comes from his 503.6 million shares owned in Facebook Inc (NASDAQ:FB). This also encompasses the 60 million options, with its exercise price of $0.06 cents per share. Adding to his declining fortune, is approximately $150 million in cash and other liquid assets, reported Bloomberg.

SAS Is a Veteran Company

This is a different story for SAS’ Goodnight. His company has been around since 1976 and the co-founder has a $10.6 billion net worth.

Goodnight is a two-thirds holder in SAS and a co-owner of the Prestonwood Country Club in Cary, North Carolina. SAS has seen dividend payments for more than three decades. It also shares a “world’s largest” distinction, similar to Facebook, as the biggest closely-held software maker. Its corporate headquarters are in Cary.

In 2011, the company saw $2.7 billion in revenue, representing a 12 percent rise. SAS has a $15.8 billion value, according to Bloomberg. Its valuation comes from an “average enterprise value-to-earnings before interest, tax, depreciation, and amortization multiple of five publicly traded peers. “

Who’s No. 1?

If Zuckerberg is No. 11 and Goodnight sits at No. 10, how does the rest of the list look?

No surprise, Microsoft Corporation (NASDAQ:MSFT) co-founder Bill Gates sits as the world’s wealthiest technology billionaire, with his $61.6 billion net worth.

As for Facebook Inc (NASDAQ:FB)’s stock, it is currently trading up 9.83% to $21.99 today. There’s no news on this Friday for the stock, other than Zuckerberg’s diminishing wealth. Its fellow social media stock, Linkedin Corporation (NYSE:LNKD) continues its rise after its strong earnings report announced on Thursday.

The stock jumped 12 percent and on Friday, it is up 14.31% to $106.92.