Can a mid-cap fund offer enough large-cap exposure?

Summary: A reader asks whether a single mid-cap fund can do the job of both growth and diversification. The piece unpacks how fund categories are designed, and why similar-sounding exposure can mean very different portfolio roles. A mid-cap fund is an equity scheme built primarily around companies ranked 101st to 250th by market value. For investors, this means the category can include some large-cap exposure, but that exposure is incidental, not the category’s core job.  According to SEBI’s 2017 categorisation circular, mid-cap funds must keep at least 65 per cent in mid-cap stocks, while Value Research’s September 2025 category analysis shows the average mid-cap fund held about 69 per cent in mid caps, 16 per cent in large caps and 15 per cent in small caps. That makes a mid-cap fund a concentrated market-cap bet first, and a diversification shortcut only in a limited sense. Why a mid-cap fund does not automatically replace large-cap exposure A mid-cap fund is a category defined by what it must predominantly own. For investors, this means any large-cap allocation inside it is secondary to the fund’s mid-cap mandate. SEBI’s categorisation framework requires at least 65 per cent in mid-cap stocks, and Value Research data published in September 2025 shows the average mid-cap fund still held roughly 69 per cent in mid caps, with only about 16 per cent in large caps. That is a meaningful cushion, but not the same thing as a deliberate large-cap allocation. The contrast becomes clearer when set against the large-cap category itself. As per a Value Research analysis, large-cap funds are allowed to invest up to 20 per cent outside large caps, yet the average large-cap fund still had only 2.95 per cent in mid caps and 2.46 per cent in small caps. In other wor

This article was originally published on February 17, 2025, and last updated on March 17, 2026.