OAIW vs VOO
OpenAI Lab Ecosystem ETF vs Vanguard S&P 500 ETF
Which is better, OAIW or VOO?
Large Cap Growth against Large Cap Blend.
VOO has a lower expense ratio. VOO is less concentrated, with 37.6% of the fund in its ten largest positions against 63.8%.
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 | OAIW | VOO |
|---|---|---|
| Expense Ratio | 0.59% | 0.03%Best |
| AUM | $4M | $997.4B |
| Dividend Yield | 0.00% | 1.04% |
| Holdings | 25 | 509 |
| YTD Return | -6.11% | +11.98%Best |
| 1Y Return | - | +16.45% |
| 3Y Return (annualized) | - | +21.19% |
| 5Y Return (annualized) | - | +12.95% |
| Top 10 Weight | 63.8% | 37.6%Best |
| Fund Family | Harbor Funds | Vanguard (US) |
| Category | Equity | Equity |
| Style | Large Cap Growth | Large Cap Blend |
| Inception | Aug 12, 2026 | Sep 7, 2010 |
Not shown on this pair: Volatility (annualized), Max Drawdown, $10,000 over the window.
OAIW 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 is available from the range buttons; it is not the opening view here because over the whole period one of these two funds moves so much further than the other that its line would sit flat on the axis.
OAIW vs VOO Performance
OpenAI Lab Ecosystem ETF (OAIW) is an ETF from Harbor Funds and Vanguard S&P 500 ETF (VOO) is an ETF from Vanguard (US). Year to date, OAIW is down 6.11% versus a gain of 11.98% for VOO.
Past performance does not guarantee future results.
Fees and Cost Over Time
OAIW 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, OAIW currently yields 0.00% against 1.04% for VOO.
Holdings Overlap
55.8% of OAIW's money is in holdings VOO also owns. 23.2% of VOO's money is in holdings OAIW also owns.
The two portfolios partly overlap.
14 positions in common, counted across the 25 positions we hold weights for in OAIW and 494 in VOO, against full books of 25 and 509.
What only one of them owns
Our book lists 474 positions for VOO that do not appear in our book for OAIW (76.0% of the fund), and 7 for OAIW that do not appear in VOO (23.0%).
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 OAIW | Weight in VOO | Difference |
|---|---|---|---|
| MSFTMicrosoft Corp | 8.92% | 5.36% | 3.56% |
| NVDANvidia Corp | 4.64% | 7.55% | 2.91% |
| AMZNAmazon.Com Inc | 7.31% | 4.13% | 3.18% |
| ORCLOracle Corp - Common | 7.79% | 0.34% | 7.45% |
| AVGOBroadcom Inc | 4.78% | 2.86% | 1.92% |
| AMDAdvanced Micro Devices Inc | 2.92% | 1.21% | 1.71% |
| WECWec Energy Group Inc. | 3.84% | 0.06% | 3.78% |
| GLWCorning Inc. | 2.43% | 0.17% | 2.26% |
| SNPSSynopsys | 2.42% | 0.12% | 2.30% |
| FLEX:SIFlex Ltd | 2.42% | 0.07% | 2.35% |
55.8% of OAIW 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.
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Frequently Asked Questions
Which is cheaper, OAIW or VOO?
OAIW 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.
What is the holdings overlap between OAIW and VOO?
55.8% of OAIW's money is in holdings VOO also owns. 23.2% of VOO's is in holdings OAIW also owns. They hold 14 positions in common, counted across the 25 positions we hold weights for in OAIW and 494 in VOO.
Which pays a higher dividend, OAIW or VOO?
OAIW yields 0.00% while VOO yields 1.04%, so VOO currently pays the higher dividend yield.
Is VOO better than OAIW?
VOO has a lower expense ratio. VOO is less concentrated, with 37.6% of the fund in its ten largest positions against 63.8%. Which one suits a particular account depends on what it is for. This is information, not a recommendation.