10 Best Fractional Investing Platforms for Buying Partial Shares

5. M1 Finance - Automated Fractional Portfolio Management

M1 Finance has carved out a unique niche in the fractional investing landscape by combining fractional share investing with automated portfolio management, creating a platform that appeals to investors who want professional-level portfolio construction without the complexity of active management. The platform's "pie" system allows investors to create custom portfolios with specific weightings for different stocks and ETFs, automatically purchasing fractional shares to maintain desired allocations and rebalancing portfolios as market conditions change. M1 Finance supports fractional investing across its entire universe of over 6,000 stocks and ETFs, with no commissions, no account minimums, and automatic dividend reinvestment that helps accelerate wealth building through compound growth. The platform's automated approach to fractional investing is particularly appealing to busy professionals and long-term investors who want to maintain disciplined investment strategies without constantly monitoring and adjusting their portfolios. Additionally, M1 Finance offers unique features such as the ability to borrow against portfolio holdings and a high-yield savings account, creating an integrated financial ecosystem that can serve as a comprehensive wealth-building platform for investors at various stages of their financial journey.