VOO vs. IVV vs. SPY: Comparing S&P 500 ETFs
In brief
VOO, IVV, and SPY all seek to track the S&P 500, so they provide substantially the same large-cap U.S. stock exposure; costs, legal structure, trading characteristics, and an investor's existing tax position drive the practical differences.
- Published
- Last reviewed
The main idea
Start with the shared S&P 500 exposure, then select the implementation whose expenses and trading characteristics fit the account without creating unnecessary switching costs.
At a glance
Verified expenses
0.03% / 0.03% / 0.0945%
VOO, IVV, and SPY issuer fees verified August 1, 2026.
Vanguard ↗Core exposure
Substantially the same
Small return differences can arise from fees, tracking, cash, and market-price timing.
S&P Dow Jones Indices ↗The underlying stock strategy is shared
VOO, IVV, and SPY each seek to track the S&P 500, a float-adjusted large-cap U.S. equity index. Choosing among them does not create three separate asset classes.
Small differences in holdings or weights can occur during index changes and fund operations, but the intended economic exposure remains substantially aligned.
Sources: VanguardiSharesState Street Investment ManagementS&P Dow Jones Indices
Expenses and trading are different cost layers
Vanguard and iShares each reported 0.03% expense ratios for VOO and IVV, while State Street reported 0.0945% for SPY when reviewed. Expense ratios are deducted inside the funds.
Investors can also encounter spreads, premiums or discounts, brokerage rules, and taxes. Frequent traders and long-term recurring investors may therefore weigh cost components differently.
Sources: VanguardiSharesState Street Investment ManagementSEC Investor.govSEC Investor.gov
Legal structure is not a return promise
SPY is a unit investment trust, while VOO and IVV are open-end funds. Prospectuses describe the operational rules and limitations associated with each structure.
Do not infer a guaranteed performance, tax, or liquidity advantage from the legal label alone. Evaluate observable expenses, spreads, tracking, distributions, and account needs.
Sources: VanguardiSharesState Street Investment ManagementSEC Investor.gov
Existing holdings change the answer
Selling an appreciated S&P 500 ETF to buy another can realize a taxable gain while barely changing market exposure. The recurring fee difference should be compared with actual transition costs.
For new money, brokerage automation, fractional-share access, spreads, securities-lending policies, and fund governance may help break a tie. None of the three is a complete global portfolio.
Sources: SEC Investor.govSEC Investor.gov
Before choosing a fund
Questions to verify
- Confirm the shared S&P 500 objective.
- Verify current expenses and spreads.
- Read the latest prospectus for structure details.
- Estimate taxes before switching an existing position.
- Do not count multiple S&P 500 ETFs as diversification.
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