MBBA vs SPY
iShares Mortgage-Backed Securities Active ETF vs State Street SPDR S&P 500 ETF Trust
Which is better, MBBA or SPY?
SPY costs less.
SPY has a lower expense ratio.
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 | MBBA | SPY |
|---|---|---|
| Expense Ratio | 0.25% | 0.09%Best |
| AUM | $719M | $823.2B |
| Dividend Yield | 3.14% | 0.99% |
| Holdings | 1,081 | 1,515 |
| YTD Return | -4.58% | +12.11%Best |
| 1Y Return | - | +14.35% |
| 3Y Return (annualized) | - | +23.00% |
| 5Y Return (annualized) | - | +12.29% |
| Fund Family | iShares by BlackRock (US) | State Street Investment Management |
| Category | Fixed Income | Equity |
| Style | - | Large Cap Blend |
| Inception | Jan 23, 2026 | Jan 22, 1993 |
Not shown on this pair: Volatility (annualized), Max Drawdown, $10,000 over the window, Top 10 Weight.
MBBA vs SPY 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.
MBBA vs SPY Performance
iShares Mortgage-Backed Securities Active ETF (MBBA) is an ETF from iShares by BlackRock (US) and State Street SPDR S&P 500 ETF Trust (SPY) is an ETF from State Street Investment Management. Year to date, MBBA is down 4.58% versus a gain of 12.11% for SPY.
Past performance does not guarantee future results.
Fees and Cost Over Time
MBBA charges 0.25% per year while SPY charges 0.09%. On a $10,000 position that is $25 vs $9 annually, a gap of $16 per year that compounds over a long holding period. On income, MBBA currently yields 3.14% against 0.99% for SPY.
Holdings Overlap
We hold position weights for 69 holdings in MBBA and 504 in SPY, totalling 77.6% and 99.8% of the two funds. The two books name no position in common, so there is no overlap percentage to show.
0 positions in common, counted across the 69 positions we hold weights for in MBBA and 504 in SPY, against full books of 1,081 and 1,515.
You are not choosing between two funds in isolation.
Whichever of MBBA and SPY you pick has to sit alongside everything else you own. Add the rest and see what the combination actually holds.
Free for up to 10 holdings. No account needed.
Frequently Asked Questions
Which is cheaper, MBBA or SPY?
MBBA has an expense ratio of 0.25% while SPY charges 0.09%. SPY is the cheaper option, by $16 a year on a $10,000 investment.
Which pays a higher dividend, MBBA or SPY?
MBBA yields 3.14% while SPY yields 0.99%, so MBBA currently pays the higher dividend yield.
Is SPY better than MBBA?
SPY has a lower expense ratio. Which one suits a particular account depends on what it is for. This is information, not a recommendation.