Is Zuckerberg to blame for Facebook's slumping stock?

Mark Zuckerberg is not in danger of losing his job, but that doesn't mean he can brush off recent criticism of his leadership.

Facebook has had a rough first three months as a public company. The social network's stock has performed poorly since going public in May, and on Monday morning it dropped to an all-time low of $18.75 -- less than half of the company's initial share price of $38.

Investors are looking to place blame for the disappointing performance, and the obvious target is Zuckerberg, the company's founder and chief executive. The 28-year-old casual-wear enthusiast built Facebook from a dorm-room project into a publicly traded company with 900 million monthly users that saw $3.7 billion in revenue and $1 billion in profits last year.

But since the stock slumped again this week, some critics have openly questioned whether Facebook's boy-wonder CEO has the maturity necessary to navigate the corporate world. In a much-repeated quote that reflected the divide between buttoned-down Wall Street and laid-back startup culture, one analyst wondered if Zuckerberg "is in over his hoodie."