债市策略思考：股债组合面临再平衡可能

Core Insights - The report highlights the potential rebalancing of stock-bond portfolios as insurance companies increase their equity allocations, which may amplify portfolio volatility risk [1][2][3] - It anticipates a downward trend in the 10-year government bond yield, potentially reaching 1.75%, and further down to 1.70% if monetary easing measures are implemented [1][7] Group 1: Insurance Companies' Equity Allocation - Since Q1 2024, insurance companies have been increasing their stock investments, reaching a total of 3.73 trillion yuan by the end of 2025, accounting for 10.07% of their total investment balance [2][14] - The scale of securities investment funds held by insurance companies grew from 1.65 trillion yuan in Q1 2024 to 1.97 trillion yuan by the end of 2025, marking a growth rate of 19.33% [2][14] - The proportion of equity investments in the total assets of life insurance companies reached 19.80% by the end of 2025, while property insurance companies saw a rise to 23.11% [2][15] Group 2: Portfolio Volatility and Risk - The report indicates that the volatility of the stock market, represented by the Shanghai Composite Index, has significantly increased, with an annualized volatility of over 20% post-September 2024, while the volatility of 10-year government bond futures remains low at around 2.3% [3][19] - A simple stock-bond portfolio constructed with 20% equity and 80% bonds shows an overall annualized volatility of 4.43%, with equities contributing approximately 58.7% to this volatility [3][19] - The increasing allocation to equities may lead to higher demands for managing drawdown risks for insurance companies [3][19] Group 3: Stock-Bond Portfolio Rebalancing - The stock-bond portfolio is dynamic and subject to continuous adjustments, with different optimal combinations emerging based on market conditions [4][22] - In the first half of 2024, a bull market in bonds and a weaker equity market led to a preference for dividend stocks, while the second half of 2025 saw a tech-led equity market rally, putting pressure on long-term bonds [4][24] - The report suggests that there may be an internal motivation for investors to shift from short-duration to long-duration bonds as equity allocations increase [6][25] Group 4: Outlook on Bond Market - Despite recent adjustments in the bond market due to rising oil prices and inflation concerns, the report maintains a neutral to optimistic outlook for the bond market, expecting the 10-year government bond yield to potentially decrease to 1.75% [7][31] - The report emphasizes the importance of monitoring the spread between 30-year and 10-year government bonds as part of the investment strategy [7][31]