We’re witnessing something in today’s markets that has never happened before. Just 10 stocks make up for 34 per cent of the S&P 500 index, beating the previous market concentration high of 33 per cent in 1963. These same 10 companies have now contributed to three quarters of the index’s return so far this year with just one stock — Nvidia Corp. — accounting for nearly 38 per cent of the gains. Read More
