How to think about a fund that has grown too big.
Every successful equity mutual fund eventually crosses a size threshold beyond which it can no longer pursue the same mandate that made it successful. Most distributors keep recommending it anyway because the brand has cachet and the trail commission is reliable.
Full essay coming Q3 2026.
The essay walks through: (a) why fund capacity matters more in mid-cap and small-cap than in flexi-cap, (b) the specific portfolio-level signals that suggest a fund has outgrown its strategy (concentration drift, position-size compression, increased correlation to the benchmark), (c) how the research desk treats a fund that we have shortlisted but is approaching its capacity ceiling, and (d) what we do when one of our shortlisted funds crosses the threshold. The essay names no funds. The principles apply across categories.
The essay walks through: (a) why fund capacity matters more in mid-cap and small-cap than in flexi-cap, (b) the specific portfolio-level signals that suggest a fund has outgrown its strategy (concentration drift, position-size compression, increased correlation to the benchmark), (c) how the research desk treats a fund that we have shortlisted but is approaching its capacity ceiling, and (d) what we do when one of our shortlisted funds crosses the threshold. The essay names no funds. The principles apply across categories.
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