Franklin Templeton, one of the world's largest asset managers, has warned that its diversification may be an illusion. The firm, which oversees $1.5 trillion in assets, argues that what appears to be broad market exposure may be a concentrated gamble due to AI-driven market concentration and rising geopolitical risks. The top 10 stocks now control 40% of the S&P 500’s total value, and Nvidia alone represents about 7.17% of any S&Ps fund as of January 2026, followed by Alphabet at a combined 6.39%. This concentration has reached levels not seen since 1932. The warning comes from the chief investment officer of Franklin Templeton Fixed Income, who directly manages $215 billion in assets.