Investors in India looking to invest in mid-cap stocks through SIPs should consider an investment horizon of a minimum of eight years for capital preservation, as per historical data analysis from 2005 to 2025. Research indicates that mid-cap funds have displayed lower volatility and risks in comparison to small-cap funds, underscoring the importance of a longer time frame of 8-10 years to potentially achieve consistent positive returns. It is crucial for investors to assess their risk tolerance and investment goals before committing to mid-cap SIPs to align their financial strategies with their long-term objectives.