过去15年寿险资金、社保基金、企业年金投资收益比较：寿险行业投资收益率高、波动性小，夏普比率最高！

Core Insights - The article compares the investment performance of social security funds, enterprise annuities, and life insurance funds over the past 15 years, highlighting that the life insurance industry has the highest investment yield and the lowest volatility, with the highest Sharpe ratio [1][6][34]. Investment Performance Comparison - In 2024, the scale of social security funds is approximately 3.3 trillion yuan, while enterprise annuities amount to 3.6 trillion yuan. In contrast, the scale of life insurance investment funds reaches 30 trillion yuan, significantly higher than both social security funds and enterprise annuities [27]. - The average investment yield for social security funds is 6.2%, for enterprise annuities is 4.7%, and for life insurance funds is 5.1% [34]. - The standard deviation of life insurance funds' yield is the lowest among the three, indicating lower risk [34]. - The Sharpe ratio for life insurance funds is the highest at 1.406, followed by social security funds at 0.619, and enterprise annuities at 0.598. The average yield of the Shanghai Composite Index is below the risk-free rate, resulting in a negative Sharpe ratio [34][35]. Investment Strategies and Asset Allocation - The investment strategies of social security funds, enterprise annuities, and life insurance funds differ significantly due to their underlying asset allocations. Social security funds have increased their equity asset allocation from 23.7% in 2008 to 53.6% in 2024 [7][17]. - Enterprise annuities maintain a high allocation to equity assets, consistently above 80% over the past decade, reaching 86.8% by 2024 [25]. - Life insurance funds have approximately 20.3% of their assets in equity and long-term equity investments [19]. Regulatory Environment - The regulatory frameworks for social security funds and enterprise annuities differ from that of insurance funds, which must consider risks such as policyholder withdrawals and liquidity [37]. - The 2025 regulations allow insurance companies more flexibility in equity asset allocation based on their solvency ratios, with limits set at 40% or 50% depending on their solvency status [15][17].