IDYN vs SPY
iShares International Equity Factor Rotation Active ETF vs State Street SPDR S&P 500 ETF Trust
Quick Verdict
SPY has a lower expense ratio. SPY delivered stronger 1-year returns. SPY offers more diversification with 505 holdings.
Side-by-Side Comparison
| Metric | IDYN | SPY | Winner |
|---|---|---|---|
| Expense Ratio | 0.45% | 0.09% | |
| AUM | $111M | $821.1B | |
| Dividend Yield | 1.81% | 1.01% | |
| Holdings | 197 | 505 | |
| YTD Return | +9.82% | +12.93% | |
| 1Y Return | +19.63% | +20.62% | |
| 3Y Return (annualized) | - | +22.00% | |
| 5Y Return (annualized) | - | +13.33% | |
| Volatility (annualized) | 14.0% | 15.3% | |
| Max Drawdown | -12.7% | -56.5% | |
| Fund Family | iShares by BlackRock (US) | State Street Investment Management | |
| Category | Equity | Equity | |
| Inception | Aug 5, 2025 | Jan 22, 1993 |
IDYN vs SPY Performance
iShares International Equity Factor Rotation Active ETF (IDYN) is a ETF from iShares by BlackRock (US) and State Street SPDR S&P 500 ETF Trust (SPY) is a ETF from State Street Investment Management. Over the past year IDYN returned +19.63% while SPY returned +20.62%. Year to date, IDYN is up 9.82% versus a gain of 12.93% for SPY.
Risk: Volatility and Drawdowns
SPY has been the more volatile fund, with annualized monthly volatility of 15.3% compared with 14.0% for IDYN. 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 -12.7% for IDYN and -56.5% for SPY. 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 0.60. They move independently enough that combining them can meaningfully diversify a portfolio.
Fees and Cost Over Time
IDYN charges 0.45% per year while SPY charges 0.09%. On a $10,000 position that is $45 vs $9 annually, a gap of $36 per year that compounds over a long holding period. On income, IDYN currently yields 1.81% against 1.01% for SPY.
Holdings Overlap
Frequently Asked Questions
Which is cheaper, IDYN or SPY?
IDYN has an expense ratio of 0.45% while SPY charges 0.09%. SPY is the cheaper option. On a $10,000 investment, that is $36 per year of difference.
Which performed better, IDYN or SPY?
Over the past year IDYN returned +19.63% vs +20.62% for SPY, so SPY leads on 1-year performance. Over the longest common window we track (1 years), IDYN annualized +22.19% vs +8.82% for SPY. Past performance does not guarantee future results.
Which is riskier, IDYN or SPY?
SPY has been the more volatile fund at 15.3% annualized versus 14.0% for IDYN. Worst drawdown: IDYN -12.7% vs SPY -56.5%.
Should I hold both IDYN and SPY?
IDYN and SPY have a monthly-return correlation of 0.60, so combining them can provide real diversification depending on your allocation goals.
What is the holdings overlap between IDYN and SPY?
IDYN and SPY share 2 common holdings with a 0.1% weight overlap. Combined, they hold 690 unique securities.
Which pays a higher dividend, IDYN or SPY?
IDYN yields 1.81% while SPY yields 1.01%, so IDYN currently pays the higher dividend yield.
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