Complementary indicators point to increasing concentration in the S&P 500 market rally: A five-year-long outperformance of the (capitalization-weighted) S&P 500 relative to the equally-weighted S&P 500 and a six-month-long divergence between the (capitalization-weighted) S&P 500 and the ratio of rising-to-falling stocks as well as a fall in entropy, a better metrics of concentration within the S&P 500