"Assuming that its five-year return is equal to the stock market’s long-term average return of 11% annualized, Facebook shares currently would need to be trading at just $13.80."<p>I think it is odd to be comparing FB with the average market. Quite an assumption, fundamental to his calculations.<p>FB is threading on a new paradigm, similar to what Google/Apple were. Obviously, comparing them to historical averages does not make sense either (at the time), since no comparable paradigm existed.