Ah, remember Facebook's IPO in May? Those were the good old days for the company, which is now worth just half of its IPO-day valuation, according to Bloomberg. At 3:58 p.m. EDT, shares were at $19.03, Bloomberg's Brian Womack reported. On its first day, it ended at $38.23

This comes as The Wall Street Journal's Shayndi Raice reports that Facebook CEO Mark Zuckerberg said that he found the value-decline "painful" in a company meeting. We're guessing that this new news is going to cause even more pain.