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Why is VFIAX an index fund?

VFIAX — Why It’s an Index Fund

VFIAX is an index fund because it seeks to track the performance of a benchmark index rather than trying to outperform it. [Source 4 | Prospectus > Investment Objective] Specifically, VFIAX tracks the performance of a benchmark index that measures the investment return of large-capitalization stocks. [Source 4 | Prospectus > Investment Objective]

Index funds work by holding all or substantially all of the securities in their target index (called “full replication”) or a representative sample of those securities (called “sampling”). [Source 2 | Prospectus > Implementation of Investment Objective] This approach allows VFIAX to match the index’s performance rather than attempting to beat it through active stock selection.

Sources: SEC EDGAR public filings

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[Source 2 | prospectus > Implementation of In...][Source 4 | prospectus > Investment Objective...]

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