IVV vs MFSB
IVV vs MFSB
iShares Core S&P 500 ETF vs MFS Active Core Plus Bond ETF
Quick Verdict
IVV has a lower expense ratio. IVV delivered stronger 1-year returns. IVV offers more diversification with 505 holdings.
Side-by-Side Comparison
| Metric | IVV | MFSB | Winner |
|---|---|---|---|
| Expense Ratio | 0.03% | 0.34% | |
| AUM | $865.2B | $527M | |
| Dividend Yield | 1.09% | 4.24% | |
| Holdings | 508 | 362 | |
| YTD Return | +11.54% | -0.15% | |
| 1Y Return | +21.48% | +2.35% | |
| 3Y Return (annualized) | +20.86% | - | |
| 5Y Return (annualized) | +13.02% | - | |
| Volatility (annualized) | 15.1% | 3.4% | |
| Max Drawdown | -56.5% | -3.2% | |
| Fund Family | iShares by BlackRock (US) | MFS Investment Management | |
| Category | Equity | Fixed Income | |
| Inception | May 15, 2000 | Dec 5, 2024 |
IVV vs MFSB Performance
iShares Core S&P 500 ETF (IVV) is a ETF from iShares by BlackRock (US) and MFS Active Core Plus Bond ETF (MFSB) is a ETF from MFS Investment Management. Over the past year IVV returned +21.48% while MFSB returned +2.35%. Year to date, IVV is up 11.54% versus a loss of 0.15% for MFSB.
Risk: Volatility and Drawdowns
IVV has been the more volatile fund, with annualized monthly volatility of 15.1% compared with 3.4% for MFSB. 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 -56.5% for IVV and -3.2% for MFSB. 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 0.30. They move independently enough that combining them can meaningfully diversify a portfolio.
Fees and Cost Over Time
IVV charges 0.03% per year while MFSB charges 0.34%. On a $10,000 position that is $3 vs $34 annually, a gap of $31 per year that compounds over a long holding period. On income, IVV currently yields 1.09% against 4.24% for MFSB.
Holdings Overlap
IVV and MFSB share 0 holdings out of 681 unique holdings combined, representing a 0.0% weight overlap.
Moderate overlap means holding both could provide meaningful diversification benefits.
Frequently Asked Questions
Which is cheaper, IVV or MFSB?
IVV has an expense ratio of 0.03% while MFSB charges 0.34%. IVV is the cheaper option. On a $10,000 investment, that is $31 per year of difference.
Which performed better, IVV or MFSB?
Over the past year IVV returned +21.48% vs +2.35% for MFSB, so IVV leads on 1-year performance. Over the longest common window we track (2 years), IVV annualized +6.97% vs +3.06% for MFSB. Past performance does not guarantee future results.
Which is riskier, IVV or MFSB?
IVV has been the more volatile fund at 15.1% annualized versus 3.4% for MFSB. Worst drawdown: IVV -56.5% vs MFSB -3.2%.
Should I hold both IVV and MFSB?
IVV and MFSB have a monthly-return correlation of 0.30, so combining them can provide real diversification depending on your allocation goals.
What is the holdings overlap between IVV and MFSB?
IVV and MFSB share 0 common holdings with a 0.0% weight overlap. Combined, they hold 681 unique securities.
Which pays a higher dividend, IVV or MFSB?
IVV yields 1.09% while MFSB yields 4.24%, so MFSB currently pays the higher dividend yield.
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