It's been a cruel summer (and spring) for Facebook founder and CEO, Mark Zuckerberg. After taking his company public in May with a stock price of $38 and a valuation that hovered around $100 billion, Zuckerberg has seen that good fortune fall by more than half over the recent months. Earlier this week, Facebook's stock price hit a new low of $18.75. The dramatic drop hurt Zuckerberg's network. When Facebook went public he was worth roughly $20 billion; now he's down to $11.98. A vast fortune, for sure, but no one likes losing that much money. All of that is enough to make anyone, well, sad. And if tech CEO has mastered the art of looking down and out for the cameras, it's Mr. Zuckerberg.