MYCOvsIEIETF Comparison
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State Street SPDR My2035 Corporate Bond ETF (MYCO) belongs to the US Corporate IG Bonds segment. iShares 3-7 Year Treasury Bond ETF (IEI) is part of the US Government Bonds segment. MYCO's top 3 sector exposures are Utilities, Finance and Technology. In contrast, IEI's top sector exposures are Sovereign and Non-Corporate. Both MYCO and IEI have the same Total Expense Ratio (TER) of 0.15%. MYCO is down -2.79% year-to-date (YTD) with +$2M in YTD flows. IEI performs better with -1.57% YTD performance, and +$131M in YTD flows. Run a side-by-side ETF comparison of MYCO and IEI below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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MYCO vs IEI performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MYCO IEI | -0.44%+0.33% | -2.78%-1.37% | -2.79%-1.57% | -2.78%-1.51% | n/a+12.28% | n/a+1.04% |
| Flows | MYCO IEI | --$134M | +$1M-$898M | +$2M+$131M | +$2M+$405M | -+$3.48B | -+$7.78B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MYCO IEI | +5.14%+3.27% | +4.74%+3.07% | n/a+3.87% | n/a+4.79% |
| Max drawdown | MYCO IEI | -4.26%-2.62% | -5.87%-3.98% | n/a-3.98% | n/a-12.64% |
| Max drawdown duration | MYCO IEI | 89d52d | 229d229d | n/a229d | n/a1362d |
Trading data
MYCO | IEI | |
Last sale 10/19/2026 at 6:46 PM | $23.17 | $114.06 |
| Previous close 10/16/2026 | $23.27 | $114.24 |
| Consolidated volume 10/16/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of October 19, 2026
1-year trailing difference
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MYCO
is actively managed and doesn’t replicate an indexMYCO | IEI | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/19/2026 at 6:46 PM
Live
Closed
MYCO | IEI | |
|---|---|---|
| Last price | $23.17 | $114.06 |
| 1D performance | -0.41% | -0.16% |
| AuM | $6.98 M | $16.87 B |
| E/R | 0.15% | 0.15% |
Characteristics
MYCO | IEI | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | State Street Investment Management | iShares |
| Benchmark | - | ICE US Treasury 3-7 Year Bond Index |
| N° of holdings | 94 | 84 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 17, 2025 | January 5, 2007 |
| ESG | No | No |
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Exposure
Countries
MYCO
USA
94.77%
Other
5.23%
IEI
USA
99.33%
Other
0.67%
Sectors
MYCO
Utilities
16.61%
Finance
13.25%
Technology
12.97%
Industrials
11.85%
Consumer Non-Cycl.
11.32%
Healthcare
10.16%
Other
23.84%
IEI
Sovereign
98.77%
Other
1.23%
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Diversification
MYCO
Total weight of top 15 holdings out of 15
29.76%
IEI
Total weight of top 15 holdings out of 15
32.35%
Top 15 holdings
Data as of August 31, 2026
MYCO
AbbVie, 4.5% 14may2035, USD
2.49%
JBS USA Holding Lux, 5.95% 20apr2035, USD
2.48%
Pacific Gas & Electric, 6% 15aug2035, USD
2.43%
Georgia Power, 5.2% 15mar2035, USD (2025C)
2.42%
AT&T Inc, 5.375% 15aug2035, USD
2.40%
J.M. Smucker, 4.25% 15mar2035, USD
1.91%
Charter Communications Operating, 6.384% 23oct2035, USD
1.83%
RTX, 5.4% 1may2035, USD
1.82%
Glencore International AG, 5.673% 1apr2035, USD
1.75%
AEP Transmission Company, 5.375% 15jun2035, USD (R)
1.75%
Leidos, Inc., 5.5% 15mar2035, USD
1.72%
General Motors, 5% 1apr2035, USD
1.72%
FirstEnergy Transmission, 5% 15jan2035, USD
1.69%
AB InBev Worldwide, 5.875% 15jun2035, USD
1.67%
NetApp, 5.7% 17mar2035, USD
1.67%
IEI
USA, Notes 4.375% 30nov2030, USD (S-2030)
2.93%
USA, Notes 1.875% 15feb2032, USD (B-2032)
2.30%
USA, Notes 4% 28feb2030, USD (H-2030)
2.29%
USA, Notes 1.375% 15nov2031, USD (F-2031)
2.28%
USA, Notes 4.125% 31aug2030, USD (P-2030)
2.24%
USA, Notes 3.375% 15may2033, USD (C-2033)
2.19%
USA, Notes 1.25% 15aug2031, USD (E-2031)
2.11%
USA, Notes 3.5% 15feb2033, USD (B-2033)
2.11%
USA, Notes 1.625% 15may2031, USD (C-2031)
2.11%
USA, Notes 2.875% 15may2032, USD (C-2032)
2.11%
USA, Notes 2.75% 15aug2032, USD (E-2032)
2.08%
USA, Notes 4.125% 15nov2032, USD (F-2032)
1.95%
USA, Notes 1.125% 15feb2031, USD (B-2031)
1.93%
USA, Notes 3.875% 15aug2033, USD (E-2033)
1.90%
USA, Notes 0.625% 15aug2030, USD (E-2030)
1.83%
Frequently asked questions about MYCO and IEI
How have the MYCO and IEI ETFs performed in 2026?
As of October 16, 2026, MYCO is down -2.79% year-to-date (YTD), while IEI has lost -1.57%. That puts IEI better performer ahead so far this year.
Which ETF is attracting more investor money: MYCO or IEI?
Year-to-date, the MYCO ETF saw +$2M in flows, compared to +$131M for IEI.
Which ETF is more volatile: MYCO or IEI?
Over the past year, MYCO had a volatility of 4.74%, while IEI experienced 3.07%.
Which ETF is bigger: MYCO or IEI?
As of October 16, 2026, MYCO holds $6.98 M in assets under management (AUM), while IEI manages $16.87 B.
What sectors do the MYCO and IEI ETFs invest in?
MYCO leans toward sectors like Utilities, Finance and Technology. Meanwhile, IEI focuses on Sovereign.
What are the top holdings of the MYCO ETF and IEI ETF?
MYCO top holdings include AbbVie, 4.5% 14may2035, USD, JBS USA Holding Lux, 5.95% 20apr2035, USD and Pacific Gas & Electric, 6% 15aug2035, USD. IEI holds in its top three: USA, Notes 4.375% 30nov2030, USD (S-2030), USA, Notes 1.875% 15feb2032, USD (B-2032) and USA, Notes 4% 28feb2030, USD (H-2030).
Which ETF is more diversified: MYCO or IEI?
MYCO holds 94 securities with 29.76% of its assets in the top 15. IEI has 84 securities and a top 15 weight of 32.35%.
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