Has tech success made the S&P 500 too risky?

Due to the strong performance of US-based megacap tech companies, the S&P 500 has become increasingly popular with investors, delivering returns of 14.7% per annum over the past decade. However, according to experts at Harris | Oakmark, these returns have also made the index a riskier place to invest. The index’s popularity has lasted due to its diverse options. Investors are able to gain exposure to large-cap US equities whilst also reducing risk. But the performance of a few giants has made the index more concentrated, with tech dwarfing all the other sectors. Read insights from Bill Nygren...