As the S&P 500 pushes towards Goldman Sachs 2,100 year end target (for 2015!!) today, we thought it worth considering just how much awesomeness has been pulled forward, priced-in, exuberantly-chased. As the following charts show, based on bottom-up long-term-growth expectations, S&P forward P/E valuations have never been higher. But that’s not all…