The Nifty LargeMidcap 250 is a composite equity index maintained by NSE Indices Limited that combines the top 100 large-cap companies (Nifty 100 constituents) with the 150 mid-cap companies from the Nifty Midcap 150 — creating a single 250-stock index that provides balanced exposure to both large-cap stability and mid-cap growth potential. The index represents companies ranked 1st to 250th by full market capitalisation on NSE, covering approximately 88% to 90% of total NSE listed market capitalisation. The Nifty LargeMidcap 250 is the benchmark for SEBI's Large and Mid Cap Fund category — which SEBI mandates must invest a minimum of 35% each in large-cap and mid-cap stocks — making it the most relevant performance benchmark for this popular hybrid category of actively managed mutual funds. This category has attracted significant investor interest in India as it blends the relative stability of large-cap anchoring with the higher growth potential of mid-cap exposure in a single SEBI-regulated structure. LargeMidcap 250 index funds and ETFs offer passive investors a cost-efficient way to replicate this blended exposure — capturing the diversification benefits of both market cap segments without requiring active management. The index's diversification across 250 companies and two cap segments makes it inherently less volatile than a pure mid-cap index while potentially outperforming a pure large-cap index over full market cycles.