The biggest boosts to the S&P 500 behind Apple were other investor favorites such as Microsoft MSFT.O, Nvidia NVDA.O, Amazon AMZN.O and Meta Platforms META.O. It helped that Treasury yields fell in response to cooling inflation, said Burns McKinney, portfolio manager at NFJ Investment Group in Dallas, Texas. Small cap stocks were also attracting attention with the Russell 2000 index .RUT closing up 0.4% in its fifth straight day of gains, its longest winning streak since the five sessions ending March 3.