Large PMS Funds & Alpha: The Scale Challenge in India

Portfolio Management Schemes (PMS) have long been an attractive option for high-net-worth individuals seeking active management and potentially superior returns compared to traditional mutual funds. However, a recent trend suggests that for a significant portion of India's largest PMS funds, scale might be working against them, impacting their ability to generate 'alpha' – returns above a benchmark.

According to recent observations, a concerning pattern has emerged among PMS schemes managing substantial assets. Specifically, five out of six large PMS funds, each overseeing more than ₹5,000 crore in assets under management (AUM), have reportedly experienced a weakening in their returns. This indicates a potential "alpha paradox" where growth in AUM no longer translates proportionally into enhanced performance, and in fact, may lead to diminishing returns.

The primary reason behind this phenomenon is the inherent limitation that comes with managing a massive corpus. As a PMS scheme grows larger, its ability to invest meaningfully in smaller or mid-cap companies – often key sources of significant alpha – becomes constrained. Deploying several hundred crores into a small-cap stock can create liquidity challenges, drive up acquisition costs (impact cost), and make it difficult to exit positions without significantly affecting the stock price. This often forces large funds to concentrate investments in larger, more liquid stocks, which tend to be more efficiently priced, thus reducing the scope for outperformance.

For investors considering PMS options, this trend highlights the importance of looking beyond just historical returns, especially for schemes that have grown substantially in size. Understanding a fund's investment philosophy, its ability to navigate liquidity constraints, and its track record across different market capitalizations, becomes crucial. While larger AUM might signal stability, it doesn't automatically guarantee superior alpha generation in the long run.

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