Are VOO and VTI redundant?

Their mandates are closely related: VOO covers large US companies; VTI covers the broader US equity market. Owning both can repeat large-cap exposure, but they are not identical funds.

Measured example

Yahoo adjusted-close monthly returns, dividends reinvested; 2010-10-01 to 2026-09-01, 191 common monthly returns. Nominal figures. Derived from preserved real observations by the shared calculation code at build time.

Pair	Correlation
VOO / VTI	0.9959

For the illustrative mix (VOO 50.0%, VTI 50.0%), monthly rebalancing produced historical CAGR 14.26%, volatility 14.25% and measured monthly maximum drawdown 24.36%. These are observations, not expected future results.

Correlation = covariance of monthly returns ÷ (standard deviation of each series). Fund-category overlap is qualitative; exact overlapping weights and shared holdings are not measured here.

Calculation details and worked example

Check your own holdings

For educational purposes only. Not investment advice. Past performance does not guarantee future results.