IAGGvsBWZETF Comparison
VS
ETF 2
BWZ
State Street SPDR Bloomberg Short Term International Treasury Bond ETF
This fund is part of
Intl Government Bonds
+0.16%
iShares Core International Aggregate Bond ETF (IAGG) belongs to the Intl IG Bonds segment. State Street SPDR Bloomberg Short Term International Treasury Bond ETF (BWZ) is part of the Intl Government Bonds segment. IAGG's top 3 sector exposures are Sovereign, Finance and Municipal. In contrast, BWZ's top sector exposures are Sovereign. IAGG is less expensive with a Total Expense Ratio (TER) of 0.07%, versus 0.35% for BWZ. IAGG is up 0.67% year-to-date (YTD) with +$880M in YTD flows. BWZ performs better with 1.59% YTD performance, and -$18M in YTD flows. Run a side-by-side ETF comparison of IAGG and BWZ 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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IAGG vs BWZ performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/08/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IAGG BWZ | -0.32%+1.45% | +0.07%+2.47% | +0.67%+1.59% | +1.43%+0.88% | +14.34%+12.19% | +4.56%-5.19% |
| Flows | IAGG BWZ | +$536M+$38M | +$797M+$17M | +$880M-$18M | +$1.25B-$39M | +$7.27B+$136M | +$8.44B+$146M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IAGG BWZ | +2.43%+4.92% | +2.63%+5.48% | +2.97%+6.16% | +3.72%+6.68% |
| Max drawdown | IAGG BWZ | -1.24%-1.91% | -2.23%-4.23% | -2.23%-8.32% | -13.18%-21.56% |
| Max drawdown duration | IAGG BWZ | 75d46d | 114d208d | 114d194d | 1022d1822d |
Trading data
IAGG | BWZ | |
Last sale 9/9/2026 at 6:04 PM | $49.56 | $27.53 |
| Previous close 09/08/2026 | $49.68 | $27.39 |
| Consolidated volume 09/08/2026 | ||
| 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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IAGG | BWZ | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/9/2026 at 6:04 PM
Live
Closed
IAGG | BWZ | |
|---|---|---|
| Last price | $49.56 | $27.53 |
| 1D performance | -0.25% | +0.51% |
| AuM | $11.88 B | $329.51 M |
| E/R | 0.07% | 0.35% |
Characteristics
IAGG | BWZ | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | State Street Investment Management |
| Benchmark | Bloomberg Global Aggregate ex USD 10% Issuer Cap Index | Bloomberg 1-3 Year Global Treasury ex-US Capped Index |
| N° of holdings | 8103 | 253 |
| Asset class | Bonds | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | November 10, 2015 | January 15, 2009 |
| ESG | No | No |
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Exposure
Countries
IAGG
China
18.64%
Japan
11.09%
France
9.46%
Germany
8.52%
United Kingdom
7.47%
Other
44.82%
BWZ
Japan
22.92%
Other
77.08%
Sectors
IAGG
Sovereign
65.2%
Finance
23.21%
Other
11.59%
BWZ
Sovereign
98.72%
Other
1.28%
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Diversification
IAGG
Total weight of top 15 holdings out of 15
8.17%
BWZ
Total weight of top 15 holdings out of 15
16.7%
Top 15 holdings
Data as of July 31, 2026
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%
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%
Frequently asked questions about IAGG and BWZ
How have the IAGG and BWZ ETFs performed in 2026?
As of September 8, 2026, IAGG is up 0.67% year-to-date (YTD), while BWZ has returned 1.59%. That puts BWZ better performer ahead so far this year.
Which ETF is attracting more investor money: IAGG or BWZ?
Year-to-date, the IAGG ETF saw +$880M in flows, compared to -$18M for BWZ.
Which ETF is more volatile: IAGG or BWZ?
Over the past year, IAGG had a volatility of 2.63%, while BWZ experienced 5.48%.
Which ETF is bigger: IAGG or BWZ?
As of September 8, 2026, IAGG holds $11.88 B in assets under management (AUM), while BWZ manages $329.51 M.
What sectors do the IAGG and BWZ ETFs invest in?
IAGG leans toward sectors like Sovereign and Finance. Meanwhile, BWZ focuses on Sovereign.
What are the top holdings of the IAGG ETF and BWZ ETF?
IAGG top holdings include China, TB 1.61% 15feb2035, CNY, China, TB 1.44% 15sep2027, CNY and China, Bonds 2.27% 25may2034, CNY. BWZ holds in its top three: Belgium, OLO 5.5% 28mar2028, EUR (31), Japan, JGB 0.1% 20mar2028, JPY and Australia, TB 3.25% 21apr2029, AUD (TB138).
Which ETF is more diversified: IAGG or BWZ?
IAGG holds 8127 securities with 8.17% of its assets in the top 15. BWZ has 258 securities and a top 15 weight of 16.7%.
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