Will a passive large-cap index fund miss out on the next big AI or tech boom over a 10yr horizon?

Published 4 October 2026

Melvin from Jaipur avatar Melvin from Jaipur
I am planning to hold a passive sector leaders index fund for the next 10yr to 15yr.

My main worry is that passive low-churn indices just hold legacy companies.

Will I completely miss out on emerging tech or AI-driven growth stories if I stick to this 63-stock index?
Sachin Kabra Sachin Kabra ex-Director HDFC Private Wealth, Business Head Motilal Oswal AMC LinkedIn
Passive sector leader indices naturally capture new growth stories because emerging companies automatically enter the index once they reach the top three in market cap for their sector.

A very common concern with passive low-churn indices is whether they miss out on fresh market opportunities. People often worry that holding legacy large-caps means missing out on emerging tech or AI-driven companies. However historical data from the last 10yr to 15yr shows a very healthy balance in the sector leaders methodology.

Only about one-third of the current index components were actually present a decade ago. This showcases the long-term resilience of those legacy leaders. But more importantly two-thirds of the index has turned over during that same period.

This means the methodology naturally captures fresh blood and new growth stories as they evolve. If platform companies or data-oriented firms or AI enterprises grow fast enough they will climb the ranks. Once they achieve top-three status in their respective sectors they will automatically find a home in this index.

The index reconstitution is formulaic and predetermined which removes the uncertainty of human behavioral biases. You get the stability of large-cap leaders while still participating in new economic trends as they mature into market dominance.

Disclaimer: All information shared above are strictly for educational and informational purposes only. It should not be construed as financial or investment advice.
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