What Is VOO? The Complete Guide to the Vanguard S&P 500 ETF

VOO at a Glance

VOO — officially the Vanguard S&P 500 ETF — is a passively managed exchange-traded fund that tracks the S&P 500 Index. In practical terms, when you buy a share of VOO, you're buying a tiny slice of approximately 500 of the largest publicly traded companies in the United States, including Apple, Microsoft, NVIDIA, Amazon, and Alphabet.

The fund was launched by The Vanguard Group on September 7, 2010, and has since become the single largest ETF in the world by assets under management, with over $1.5 trillion invested in the fund as of early 2026. Its growth has been staggering — in 2024 alone, VOO attracted nearly $113 billion in net inflows, a record for any single ETF in a calendar year.

VOO's defining feature is its cost. With an expense ratio of 0.03%, you pay just $3 per year for every $10,000 invested. That makes it one of the cheapest investment vehicles available anywhere, and it's a major reason why VOO has overtaken SPY as the world's largest ETF.

How Does VOO Work?

VOO uses what's called a full replication strategy. Rather than sampling a subset of stocks, the fund buys and holds every stock in the S&P 500 Index, in approximately the same proportion as the index.

This means if Apple represents 6.63% of the S&P 500, approximately 6.63% of VOO's assets are invested in Apple stock. When the S&P 500 is rebalanced quarterly by S&P Global's index committee, VOO adjusts its holdings to match. VOO's return, before fees, should be nearly identical to the S&P 500's return.

The fund is structured as an open-end ETF, which gives it two structural advantages over older S&P 500 ETFs like SPY (which is a unit investment trust). First, VOO can immediately reinvest dividends received from its holdings, rather than holding them in cash — this reduces tracking error. Second, VOO can lend its holdings to generate additional revenue, which offsets fund expenses and slightly improves returns.

VOO is also a share class of the larger Vanguard 500 Index Fund, which includes mutual fund share classes (VFIAX). This structure — unique to Vanguard thanks to a now-expired patent — allows gains from mutual fund redemptions to be offset against the ETF, making VOO exceptionally tax-efficient.

What Does VOO Hold?

VOO holds approximately 518 stocks as of early 2026. Despite the "500" in the name, the actual count varies slightly because some S&P 500 companies have multiple share classes (like Alphabet's GOOGL and GOOG).

The fund is market-cap weighted, meaning the largest companies represent the biggest share of the portfolio. The top 10 holdings account for over 36% of the total fund:

Data shown as of Feb 28, 2026. Sources: Vanguard, StockAnalysis.com. Verify current data at investor.vanguard.com before making investment decisions.

Technology dominates at over 33% of the fund. Financial services, communication services, consumer cyclical, and healthcare each represent roughly 10–12%.

This concentration is worth understanding. When tech stocks rally, VOO tends to outperform. When they sell off — as during the 2022 bear market — VOO can fall sharply. The fund's fortunes are significantly tied to a handful of mega-cap names.

See the full holdings list and sector breakdown →

VOO Performance History

VOO's track record mirrors the S&P 500, which has delivered strong long-term returns across multiple decades. Here are the annualized returns through March 2026:

Returns include dividends and are as of Mar 27, 2026. Past performance does not guarantee future results. Sources: Vanguard, StockAnalysis.com.

Calendar year returns tell a more nuanced story. In strong years like 2013 (+32.4%) and 2023 (+26.3%), VOO delivered exceptional gains. In 2022, it lost 18.2%.

The key takeaway: VOO has never delivered a negative 10-year return in its history. Investors who held through every downturn — including COVID-19, the 2022 tech correction, and the 2026 market volatility — were eventually made whole and then some. But that requires patience. The fund fell roughly 34% from peak to trough during the COVID crash in 2020 and took about 5 months to recover.

Want to see what a specific investment period would have returned? Use our VOO historical returns calculator to model any start and end date since October 2010, with or without dividend reinvestment.

Fees and Expenses

VOO charges an annual expense ratio of 0.03%. To put that in perspective: $10,000 invested costs $3 per year in fees; $100,000 invested costs $30 per year; $1,000,000 invested costs $300 per year.

This makes VOO one of the cheapest investment products on the planet. The average expense ratio for U.S. equity ETFs is around 0.44% — more than 14 times what VOO charges.

There are no front-end loads, back-end loads, or 12b-1 fees. The only cost is the 0.03% annual expense ratio, which is deducted automatically from the fund's net asset value. You never write a check for it.

VOO's closest competitors on price are IVV (iShares Core S&P 500 ETF) at 0.03% and SPLG (SPDR Portfolio S&P 500 ETF) at 0.02%. SPY, the oldest and most heavily traded S&P 500 ETF, charges 0.09% — three times as much.

See how VOO's fees compare to SPY side by side →

Dividends

VOO pays dividends quarterly, typically in March, June, September, and December. The dividends come from the underlying S&P 500 companies — when Apple or Microsoft pay their shareholders, a portion of that cash flows through to VOO holders.

Key dividend facts: the current yield is approximately 1.20%; the annual payout is roughly $7.13 per share (trailing 12 months); the most recent dividend was $1.87/share with an ex-date of March 27, 2026; and VOO's per-share payout has grown at approximately 5.85% annually over the past 5 years.

VOO dividends are classified as qualified dividends, which means they are taxed at the long-term capital gains rate (0%, 15%, or 20% depending on your income bracket) rather than as ordinary income. This is a meaningful tax advantage over bond income or REIT dividends.

Most investors reinvest VOO dividends through their broker's DRIP (dividend reinvestment plan), which automatically uses dividend payments to buy additional shares.

See the full dividend history, schedule, and income calculator →

Who Is VOO For?

Long-term buy-and-hold investors. If your time horizon is 10+ years and you want exposure to the U.S. stock market without picking individual stocks, VOO is the default choice for millions of people. The "VOO and chill" strategy — buying VOO regularly and ignoring market noise — has become one of the most popular approaches among retail investors. Learn more about the "VOO and chill" approach →

Cost-conscious investors. At 0.03%, VOO's fees are essentially negligible. Over a 30-year investment horizon, the difference between VOO's 0.03% expense ratio and an actively managed fund's 0.75% fee can amount to tens of thousands of dollars on a six-figure portfolio.

Retirement account holders. VOO is a common holding in Roth IRAs, traditional IRAs, and 401(k) plans. Its tax-efficient structure makes it particularly effective in taxable brokerage accounts, but it works well in any account type. Read our guide to using VOO in a Roth IRA →

VOO may be less suitable if you're seeking income (dividend-focused ETFs like SCHD offer higher yields), international diversification (VOO is 100% U.S. stocks), or exposure to smaller companies (consider VTI for total market coverage).

VOO vs Similar ETFs

VOO isn't the only S&P 500 ETF. Here's how it stacks up against the most common alternatives:

The practical differences are small. For long-term investors, VOO and IVV are essentially interchangeable. SPY costs more but offers unmatched liquidity for active traders. SPLG is the cheapest but has far less trading volume.

Read our full VOO vs SPY comparison →

Read our full VOO vs VTI comparison →

How to Buy VOO

Buying VOO is straightforward. You'll need a brokerage account with any major broker — Vanguard, Fidelity, Schwab, Robinhood, or Interactive Brokers all offer commission-free ETF trading.

The basic steps: open a brokerage account (or use an existing one), deposit funds, search for ticker "VOO," choose the number of shares (or dollar amount if fractional shares are supported), place a market order or limit order, and you're done — you now own a piece of the S&P 500.

There's no minimum investment beyond the price of a single share (around $582). Many brokers offer fractional shares, letting you start with as little as $1.

If you prefer a mutual fund to an ETF, the equivalent product is Vanguard 500 Index Fund Admiral Shares (VFIAX), which has a $3,000 minimum investment and the same 0.04% expense ratio.

Read our step-by-step guide to buying VOO →

Risks

VOO is not a risk-free investment. Important risks include:

Market risk. VOO's returns mirror the S&P 500. In 2022, that meant a loss of over 18%. In early 2020, the fund dropped roughly 34% in about five weeks. These drawdowns are normal for equity markets, but they can be severe.

Concentration risk. The top 10 holdings represent over 36% of the fund. If mega-cap tech stocks underperform, VOO will feel it disproportionately. This concentration has grown significantly over the past decade as companies like NVIDIA, Apple, and Microsoft have ballooned in market cap.

No international diversification. VOO holds only U.S. stocks. If the U.S. market underperforms international markets (as it did from 2000–2010), VOO investors would have been better served by a globally diversified portfolio.

Currency risk (for international investors). VOO is denominated in U.S. dollars. Non-U.S. investors face exchange rate fluctuations that can amplify or reduce returns.

Frequently Asked Questions

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