IWB vs VOO
IWB vs VOO
iShares Russell 1000 ETF vs Vanguard S&P 500 ETF
Quick Verdict
VOO has a lower expense ratio. VOO delivered stronger 1-year returns. IWB offers more diversification with 884 holdings.
Side-by-Side Comparison
| Metric | IWB | VOO | Winner |
|---|---|---|---|
| Expense Ratio | 0.15% | 0.03% | |
| AUM | $47.8B | $979.0B | |
| Dividend Yield | 0.92% | 1.09% | |
| Holdings | 1,029 | 509 | |
| YTD Return | +13.28% | +13.53% | |
| 1Y Return | +23.01% | +23.65% | |
| 3Y Return (annualized) | +20.84% | +21.27% | |
| 5Y Return (annualized) | +12.68% | +13.52% | |
| Volatility (annualized) | 15.3% | 14.1% | |
| Max Drawdown | -56.4% | -34.3% | |
| Fund Family | iShares by BlackRock (US) | Vanguard (US) | |
| Category | Equity | Equity | |
| Inception | May 15, 2000 | Sep 7, 2010 |
IWB vs VOO Performance
iShares Russell 1000 ETF (IWB) is a ETF from iShares by BlackRock (US) and Vanguard S&P 500 ETF (VOO) is a ETF from Vanguard (US). Over the past year IWB returned +23.01% while VOO returned +23.65%. Year to date, IWB is up 13.28% versus a gain of 13.53% for VOO.
Over three years, IWB compounded at +20.84% per year against +21.27% for VOO; over five years the annualized figures are +12.68% and +13.52% respectively. Across the full 16-year window we track, VOO has the edge at +13.57% annualized vs +7.13%. Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
IWB has been the more volatile fund, with annualized monthly volatility of 15.3% compared with 14.1% for VOO. 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 -56.4% for IWB and -34.3% for VOO. Drawdown depth is worth weighing if you expect to sell during market stress rather than ride it out.
The two funds' monthly returns correlate at 1.00. They move almost in lockstep, so holding both mostly duplicates the same exposure.
Fees and Cost Over Time
IWB charges 0.15% per year while VOO charges 0.03%. On a $10,000 position that is $15 vs $3 annually, a gap of $12 per year that compounds over a long holding period. On income, IWB currently yields 0.92% against 1.09% for VOO.
Holdings Overlap
IWB and VOO share 483 holdings out of 906 unique holdings combined, representing a 89.9% weight overlap.
High overlap means holding both may not provide much additional diversification.
Top Shared Holdings
| Stock | Weight in IWB | Weight in VOO | Difference |
|---|---|---|---|
| NVDA | 6.54% | 7.51% | 0.97% |
| AAPL | 6.48% | 6.59% | 0.11% |
| MSFT | 4.12% | 4.30% | 0.18% |
| AMZN | Pro | Pro | Pro |
| GOOGL | Pro | Pro | Pro |
| AVGO | Pro | Pro | Pro |
| GOOG | Pro | Pro | Pro |
| META | Pro | Pro | Pro |
| MU | Pro | Pro | Pro |
| TSLA | Pro | Pro | Pro |
See all 10 holdings IWB shares with VOO Exact weights in each fund and the difference, for every overlapping position. Get FundXLS Pro: $29/moFirst 500 subscribers, then $49/mo. Cancel anytime. | |||
Frequently Asked Questions
Which is cheaper, IWB or VOO?
IWB has an expense ratio of 0.15% while VOO charges 0.03%. VOO is the cheaper option. On a $10,000 investment, that is $12 per year of difference.
Which performed better, IWB or VOO?
Over the past year IWB returned +23.01% vs +23.65% for VOO, so VOO leads on 1-year performance. Over the longest common window we track (16 years), IWB annualized +7.13% vs +13.57% for VOO. Past performance does not guarantee future results.
Which is riskier, IWB or VOO?
IWB has been the more volatile fund at 15.3% annualized versus 14.1% for VOO. Worst drawdown: IWB -56.4% vs VOO -34.3%.
Should I hold both IWB and VOO?
IWB and VOO have a monthly-return correlation of 1.00, so they move almost identically. Holding both adds little diversification - most investors pick one, usually on fees or the specific index tracked.
What is the holdings overlap between IWB and VOO?
IWB and VOO share 483 common holdings with a 89.9% weight overlap. Combined, they hold 906 unique securities.
Which pays a higher dividend, IWB or VOO?
IWB yields 0.92% while VOO yields 1.09%, so VOO currently pays the higher dividend yield.
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