etf overlap tool · nearly the same fund
SPY vs VFV overlap
97% of SPY and VFV is the same money, spread over 501 companies both funds hold.
Holdings as of October 16, 2026 (SPY) and September 30, 2026 (VFV) · source: SPDR (SPY), Vanguard (VFV) · How we measured all 1,431 pairs
- same money
- same companies, extra weight
- only in this fund
VFV holds one fund, VOO (99.8% of its money), not stocks: the lines here are the 505 stocks of VOO, from Vanguard's own month-end file. Vanguard's files give an ISIN with each line: 100.0% of its stock money is matched on one.
Hold SPY and VFV with other funds or stocks? The free portfolio optimizer opens SPY and VFV beside the rest of what you own: the companies you hold twice, what the funds cost a year, and where the next deposit should go. No account.
The companies you would own twice
GOOGALPHABET INC CL C2.43%2.45%
What only one of them gives you
CTVACorteva Inc0.08%Where each fund puts its money
SPY and VFV: what people ask
Is VFV the same as SPY?
Nearly: 97% of the money in SPY and VFV sits in the same companies at the same weights, as of September 30, 2026. The other 3.5% is weight differences, plus 3 names only in SPY and 4 only in VFV.
How much do SPY and VFV overlap?
97% by weight, as of September 30, 2026: nearly the same fund. 501 companies appear in both funds; they make up 99.8% of SPY and 99.6% of VFV.
Which stocks do SPY and VFV 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 VFV?
Out of every $100 split evenly between them, about $97 (half in each fund) buys identical positions. The rest is exposure only one of the two funds gives you: 3 names only in SPY, 4 only in VFV. Half in each behaves like 44 equally weighted stocks, against 44 for SPY alone and 43 for VFV alone. 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. Sector overlap applies the same rule to the issuers' sector labels; "behaves like N equally weighted stocks" is one over the sum of the squared weights.
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.