Core Viewpoint - The dominance of mega-cap technology stocks in market returns raises concerns about concentration risk [1] Group 1 - The performance of the market is heavily influenced by a small number of large technology companies [1] - Investors are increasingly wary of the potential risks associated with this concentration in the technology sector [1] - The reliance on a few mega-cap stocks for market gains could lead to volatility if these stocks underperform [1]