Key Differences
| Feature | SPY | AGG |
|---|---|---|
| Expense Ratio | 0.09% | 0.03% |
| Dividend Yield | 1.2% | 3.9% |
| Holdings | 500+ | 11,500+ |
| Index Tracked | S&P 500 Index | Bloomberg US Aggregate Bond Index |
| Inception Date | 1993-01-22 | 2003-09-22 |
SPY vs AGG: Which Is Better?
SPY and AGG are both widely used by ETF investors, but they serve different portfolio roles depending on diversification goals, sector exposure, and long-term strategy.
SPY is designed for investors seeking broad U.S. large-cap exposure and tracks S&P 500 Index. It is commonly used in portfolios focused on us large cap allocations.
AGG is designed for investors seeking total US investment-grade bond market exposure and tracks Bloomberg US Aggregate Bond Index. It is commonly used in portfolios focused on intermediate core bond allocations.
Portfolio Overlap
Understanding how much SPY and AGG overlap in their underlying holdings is key to evaluating whether combining them adds diversification or creates redundancy in your portfolio.
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