BWZvsIAGGETF Comparison
ETF 1
BWZ
State Street SPDR Bloomberg Short Term International Treasury Bond ETF
This fund is part of
Intl Government Bonds
-0.02%
VS
State Street SPDR Bloomberg Short Term International Treasury Bond ETF (BWZ) belongs to the Intl Government Bonds segment. iShares Core International Aggregate Bond ETF (IAGG) is part of the Intl IG Bonds segment. BWZ's top 1 sector exposures are Sovereign. In contrast, IAGG's top sector exposures are Sovereign, Finance and Municipal. BWZ is more expensive with a Total Expense Ratio (TER) of 0.35%, versus 0.07% for IAGG. BWZ is up 0.49% year-to-date (YTD) with -$18M in YTD flows. IAGG performs worse with 0.08% YTD performance, and +$880M in YTD flows. Run a side-by-side ETF comparison of BWZ and IAGG 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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BWZ vs IAGG performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | BWZ IAGG | +0.12%-0.78% | +0.63%-1.33% | +0.49%+0.08% | -1.01%+0.79% | +11.07%+14.06% | -6.12%+4.00% |
| Flows | BWZ IAGG | +$38M+$524M | +$17M+$1.16B | -$18M+$880M | -$39M+$1.19B | +$152M+$7.27B | +$146M+$8.44B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | BWZ IAGG | +5.01%+2.44% | +5.51%+2.68% | +6.17%+2.97% | +6.68%+3.73% |
| Max drawdown | BWZ IAGG | -1.86%-1.80% | -4.23%-2.23% | -8.32%-2.23% | -21.23%-13.18% |
| Max drawdown duration | BWZ IAGG | 45d83d | 216d114d | 194d114d | 1826d1022d |
Trading data
BWZ | IAGG | |
Last sale 9/17/2026 at 4:18 PM | $27.12 | $49.51 |
| Previous close 09/16/2026 | $27.04 | $49.35 |
| Consolidated volume 09/16/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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BWZ | IAGG | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/17/2026 at 4:18 PM
Live
Closed
BWZ | IAGG | |
|---|---|---|
| Last price | $27.12 | $49.51 |
| 1D performance | +0.30% | +0.32% |
| AuM | $325.94 M | $11.81 B |
| E/R | 0.35% | 0.07% |
Characteristics
BWZ | IAGG | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | State Street Investment Management | iShares |
| Benchmark | Bloomberg 1-3 Year Global Treasury ex-US Capped Index | Bloomberg Global Aggregate ex USD 10% Issuer Cap Index |
| N° of holdings | 253 | 8103 |
| Asset class | Bonds | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | January 15, 2009 | November 10, 2015 |
| ESG | No | No |
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Exposure
Countries
BWZ
Japan
22.92%
Other
77.08%
IAGG
China
18.64%
Japan
11.09%
France
9.46%
Germany
8.52%
United Kingdom
7.47%
Other
44.82%
Sectors
BWZ
Sovereign
98.72%
Other
1.28%
IAGG
Sovereign
65.2%
Finance
23.21%
Other
11.59%
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Diversification
BWZ
Total weight of top 15 holdings out of 15
16.7%
IAGG
Total weight of top 15 holdings out of 15
8.17%
Top 15 holdings
Data as of July 31, 2026
BWZ
Belgium, OLO 5.5% 28mar2028, EUR (31)
1.88%
Japan, JGB 0.1% 20mar2028, JPY
1.28%
Australia, TB 3.25% 21apr2029, AUD (TB138)
1.27%
Netherlands, DSL 5.5% 15jan2028, EUR
1.21%
Australia, TB 2.75% 21nov2028, AUD (TB152)
1.21%
United Kingdom, Gilt 4.375% 7mar2028, GBP
1.01%
Australia, TB 2.25% 21may2028, AUD (TB149)
1.01%
Japan, JGB 0.1% 20jun2028, JPY
1.00%
Mexico, Bonos 8.5% 1mar2029, MXN
0.99%
Japan, JGB 0.1% 20sep2027, JPY
0.98%
Japan, JGB 0.1% 20dec2027, JPY
0.98%
Japan, JGB 0.1% 20sep2027, JPY
0.98%
Australia, TB 2.75% 21nov2027, AUD (TB148)
0.97%
Japan, JGB 0.1% 20sep2028, JPY
0.97%
Japan, JGB 0.1% 20dec2028, JPY
0.96%
IAGG
China, TB 1.61% 15feb2035, CNY
1.11%
China, TB 1.44% 15sep2027, CNY
0.77%
China, Bonds 2.27% 25may2034, CNY
0.70%
China, Bonds 2.28% 25mar2031, CNY
0.56%
China, TB 1.43% 25jan2030, CNY
0.55%
China, Bonds 2.68% 21may2030, CNY
0.55%
China, Bonds 1.49% 25dec2031, CNY
0.53%
China Development Bank, 3.66% 1mar2031, CNY
0.52%
China Development Bank, 3.65% 21may2029, CNY
0.46%
China, Bonds 2.05% 15apr2029, CNY
0.46%
Germany, Bobl 1.3% 15oct2027, EUR
0.43%
China, Bonds 1.91% 15jul2029, CNY
0.42%
China, Bonds 3.81% 14sep2050, CNY
0.37%
BlackRock Cash Funds - Treasury
0.37%
China, Bonds 3.19% 15apr2053, CNY
0.37%
Frequently asked questions about BWZ and IAGG
How have the BWZ and IAGG ETFs performed in 2026?
As of September 16, 2026, BWZ is up 0.49% year-to-date (YTD), while IAGG has returned 0.08%. That puts BWZ better performer ahead so far this year.
Which ETF is attracting more investor money: BWZ or IAGG?
Year-to-date, the BWZ ETF saw -$18M in flows, compared to +$880M for IAGG.
Which ETF is more volatile: BWZ or IAGG?
Over the past year, BWZ had a volatility of 5.51%, while IAGG experienced 2.68%.
Which ETF is bigger: BWZ or IAGG?
As of September 16, 2026, BWZ holds $325.94 M in assets under management (AUM), while IAGG manages $11.81 B.
What sectors do the BWZ and IAGG ETFs invest in?
BWZ leans toward sectors like Sovereign. Meanwhile, IAGG focuses on Sovereign and Finance.
What are the top holdings of the BWZ ETF and IAGG ETF?
BWZ top holdings include Belgium, OLO 5.5% 28mar2028, EUR (31), Japan, JGB 0.1% 20mar2028, JPY and Australia, TB 3.25% 21apr2029, AUD (TB138). IAGG holds in its top three: China, TB 1.61% 15feb2035, CNY, China, TB 1.44% 15sep2027, CNY and China, Bonds 2.27% 25may2034, CNY.
Which ETF is more diversified: BWZ or IAGG?
BWZ holds 258 securities with 16.7% of its assets in the top 15. IAGG has 8127 securities and a top 15 weight of 8.17%.
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