etf overlap · heavy overlap
SPY vs VUG overlap
58% of SPY and VUG is the same money, spread over 123 companies both funds hold.
Holdings as of August 31, 2026 · source: SPDR (SPY), Vanguard (VUG)
- same money
- same companies, extra weight
- only in this fund
The companies you would own twice
What only one of them gives you
Where each fund puts its money
SPY and VUG: what people ask
How much do SPY and VUG overlap?
58% by weight, as of August 31, 2026: heavy overlap. 123 companies appear in both funds; they make up 59% of SPY and 97% of VUG.
Which stocks do SPY and VUG both hold?
The largest shared positions are NVDA, AAPL, MSFT, AMZN and GOOGL. Ranked by the smaller of the two weights, which is the part you would own twice.
Is it redundant to hold both SPY and VUG?
Out of every $100 split evenly between them, about $58 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 381 names only in SPY, 24 only in VUG. Whether that duplication is a problem depends on the mix you want; this is a description, not advice.
How is ETF overlap calculated here?
For every company held by both funds we take the smaller of its two weights and add them up. The weights come from the full holdings files SPDR and Vanguard publish, not a top-10 sample, and companies are matched by their ISIN so share classes stay apart.
Weights come from each issuer's published holdings file and are matched company by company on their ISIN. Cash, futures and currency positions are left out. This page describes what the funds hold; it is not investment advice.