Investors in India looking to invest in mid-cap stocks through SIPs should consider an investment horizon of at least eight years for capital preservation, as per historical data analysis from 2005 to 2025. Mid-cap funds have demonstrated lower volatility and risks in comparison to small-cap funds, indicating that a timeframe of 8-10 years is recommended for sustained positive returns. This long-term approach can help investors navigate market fluctuations and benefit from the growth potential of mid-cap stocks. By staying invested for an extended period, investors can ride out market volatility and potentially achieve their financial goals. It is essential for investors to conduct thorough research and seek advice from financial experts before making any investment decisions.