Shares of the social networking giant skyrocketed back to their pre-listing level for the first time since its initial public offering. Facebook's shares reached over the milestone of US$38 per share on the latest New York's Nasdaq exchange.

Facebook's flirting with the stock market was attributed to the mobile advertisement revenue increase according to analysts. The shares of the company slipped to US$37.75 before the tradings' close. This increase was equal to 40% since last Wednesday's trading. This surge in share price lifted Mark Zuckerberg's net worth, chief executive officer of the company, to US$92 billion. This is eight times more than the total worth of most companies such as Marks & Spencer.

"We are investing in mobile, measurement and product innovation," said Sheryl Sandberg, the website's chief operating officer. "The results we're reporting today demonstrate the early returns on these investments," she said.

Facebook's aggressive mobile advertisement campaign drove the company's stocks upward, according to analysts. The shift to mobile prompted large firms to change marketing tactics, adapting to the ballooning mobile computing market, they explained.