OAKM vs VOO
Oakmark US Large Cap ETF vs Vanguard S&P 500 ETF
Which is better, OAKM or VOO?
Large Cap Value against Large Cap Blend.
VOO has a lower expense ratio. VOO led over 1Y and the full window. OAKM is less concentrated, with 35.6% of the fund in its ten largest positions against 36.4%.
MarketXLS is not an investment adviser. This comparison is generated automatically from market data and is for information only. A Best mark means the better reading on that one measure, not a recommendation to buy.
Side-by-Side Comparison
| Metric | OAKM | VOO |
|---|---|---|
| Expense Ratio | 0.59% | 0.03%Best |
| AUM | $1.2B | $997.4B |
| Dividend Yield | 0.60% | 1.04% |
| Holdings | 41 | 509 |
| YTD Return | +8.33% | +12.23%Best |
| 1Y Return | +17.36% | +18.60%Best |
| 3Y Return (annualized) | - | +20.98% |
| 5Y Return (annualized) | - | +12.76% |
| Volatility (annualized) | 11.0%Best | 12.7% |
| Max Drawdown | -15.2%Best | -18.7% |
| $10,000 over 1.8 years | $12,612 | $12,963Best |
| Top 10 Weight | 35.6%Best | 36.4% |
| Fund Family | Oakmark Funds | Vanguard (US) |
| Category | Equity | Equity |
| Style | Large Cap Value | Large Cap Blend |
| Inception | Dec 3, 2024 | Sep 7, 2010 |
Volatility and max drawdown, and the $10,000 over 1.8 years row, are measured over the window both funds cover: Dec 3, 2024 to Sep 9, 2026 (1.8 years).
OAKM vs VOO growth
Month-end closes. Both lines start at 0% in the first month shown, so the gap between them is the difference in growth across that window. The full view covers the 1.8 years both funds cover.
OAKM vs VOO Performance
Oakmark US Large Cap ETF (OAKM) is an ETF from Oakmark Funds and Vanguard S&P 500 ETF (VOO) is an ETF from Vanguard (US). Over the past year OAKM returned +17.36% while VOO returned +18.60%. Year to date, OAKM is up 8.33% versus a gain of 12.23% for VOO.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
VOO has been the more volatile fund, with annualized monthly volatility of 12.7% compared with 11.0% for OAKM. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.
The deepest peak-to-trough decline in our data was -15.2% for OAKM and -18.7% for VOO. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.48. They move together some of the time, and apart the rest.
Fees and Cost Over Time
OAKM charges 0.59% per year while VOO charges 0.03%. On a $10,000 position that is $59 vs $3 annually, a gap of $56 per year that compounds over a long holding period. On income, OAKM currently yields 0.60% against 1.04% for VOO.
Holdings Overlap
90.7% of OAKM's money is in holdings VOO also owns. 14.3% of VOO's money is in holdings OAKM also owns.
Most of OAKM is already inside VOO. Owning both mostly buys the same companies twice.
The two holdings books were reported 50 days apart, OAKM as of Aug 19, 2026 and VOO as of Jun 30, 2026, so some of the difference between them is the time between the two reports rather than the funds.
34 positions in common, counted across the 39 positions we hold weights for in OAKM and 505 in VOO, against full books of 41 and 509.
What only one of them owns
Our book lists 463 positions for VOO that do not appear in our book for OAKM (85.2% of the fund), and 2 for OAKM that do not appear in VOO (3.3%).
Some of those will be the same company recorded under a different code in one of the two books, so the real difference in what you would own is no larger than this and may be smaller. We do not name the individual positions here for that reason.
Top Shared Holdings
| Stock | Weight in OAKM | Weight in VOO | Difference |
|---|---|---|---|
| AMZNAmazon.Com Inc | 1.59% | 3.62% | 2.03% |
| ABNBAirbnb Inc | 4.07% | 0.09% | 3.98% |
| CCitigroup Inc. | 3.70% | 0.36% | 3.34% |
| BACBank of America Corp.: Financials | 3.48% | 0.58% | 2.90% |
| TRGPTarga Resources Corp. | 3.78% | 0.09% | 3.69% |
| GOOGAlphabet Inc. C | 1.27% | 2.59% | 1.32% |
| GOOGLAlphabet Inc,class A | 0.56% | 3.25% | 2.69% |
| COFCapital One Financial Corp. | 3.55% | 0.19% | 3.36% |
| MRKMerck & Company Inc | 3.18% | 0.49% | 2.69% |
| CRMSalesforce Inc Crm Us Equity | 3.43% | 0.20% | 3.23% |
90.7% of OAKM is already inside VOO.
You probably hold more than these two. Add the rest and see how much of the whole book is the same companies twice.
Free for up to 10 holdings. No account needed.
Frequently Asked Questions
Which is cheaper, OAKM or VOO?
OAKM has an expense ratio of 0.59% while VOO charges 0.03%. VOO is the cheaper option, by $56 a year on a $10,000 investment.
Which performed better, OAKM or VOO?
Over the past year OAKM returned +17.36% vs +18.60% for VOO, so VOO leads on 1-year performance. Over the longest common window we track (2 years), OAKM annualized +13.76% vs +15.51% for VOO. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, OAKM or VOO?
VOO has been the more volatile fund at 12.7% annualized versus 11.0% for OAKM. Worst drawdown: OAKM -15.2% vs VOO -18.7%.
Should I hold both OAKM and VOO?
OAKM and VOO have a monthly-return correlation of 0.48, so their returns are far enough apart for the mix to behave differently from either one alone. This is information, not a recommendation.
What is the holdings overlap between OAKM and VOO?
90.7% of OAKM's money is in holdings VOO also owns. 14.3% of VOO's is in holdings OAKM also owns. They hold 34 positions in common, counted across the 39 positions we hold weights for in OAKM and 505 in VOO.
Which pays a higher dividend, OAKM or VOO?
OAKM yields 0.60% while VOO yields 1.04%, so VOO currently pays the higher dividend yield.
Is VOO better than OAKM?
VOO has a lower expense ratio. VOO led over 1Y and the full window. OAKM is less concentrated, with 35.6% of the fund in its ten largest positions against 36.4%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.