Megacap growth and technology stocks such as Nvidia Corp NVDA.O and Tesla Inc TSLA.O, which came under pressure as yields surged, added 1.9% each. The benchmark S&P 500 index .SPX has fallen nearly 4% since Fed Chair Jerome Powell's Jackson Hole speech last week that reaffirmed the central bank's determination to aggressively raise interest rates to fight inflation despite a slowing economy. The CBOE Volatility index, also known as Wall Street's fear gauge, slipped to 25.33 points after touching an over six-week closing high in the previous session.