AGGvsSPABETF Comparison

ETF 1

AGG

iShares Core U.S. Aggregate Bond ETF

This fund is part of

US Aggregate Bonds

-0.01%

Full AGG fund page

ETF 2

SPAB

State Street SPDR Portfolio Aggregate Bond ETF

This fund is part of

US Aggregate Bonds

-0.01%

Full SPAB fund page

The ETFs iShares Core U.S. Aggregate Bond ETF (AGG) and State Street SPDR Portfolio Aggregate Bond ETF (SPAB) track the Bloomberg US Aggregate Total Return Index - USD and belong to the same industry segment: US Aggregate Bonds. Both ETFs have the same top 3 sector exposures: Sovereign, Finance and Industrials. Both AGG and SPAB have the same Total Expense Ratio (TER) of 0.03%. AGG is down -0.32% year-to-date (YTD) with +$7.02B in YTD flows. SPAB performs better with -0.3% YTD performance, and +$1.18B in YTD flows. Run a side-by-side ETF comparison of AGG and SPAB 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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AGG vs SPAB performance and flow charts

Performance

Cumulative Flows

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Data Services

Historic performance and flows

Data as of 09/04/2026

		1M	3M	YTD	1Y	3Y	5Y
Perf.	AGG SPAB	-0.35%-0.32%	-0.67%-0.63%	-0.32%-0.30%	+1.32%+1.36%	+13.76%+13.81%	-1.23%-1.34%
Flows	AGG SPAB	+$1.69B+$454M	+$4.12B+$653M	+$7.02B+$1.18B	+$11.20B+$1.87B	+$45.25B+$3.54B	+$65.11B+$4.99B

Volatility and drawdown

		3M	1Y	3Y	5Y
Volatility	AGG SPAB	+3.92%+3.93%	+3.67%+3.66%	+5.03%+5.06%	+5.91%+5.95%
Max drawdown	AGG SPAB	-1.72%-1.72%	-2.73%-2.76%	-4.86%-4.87%	-17.79%-17.87%
Max drawdown duration	AGG SPAB	67d67d	187d187d	284d284d	1625d1626d

Trading data

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	AGG	SPAB
Last sale 9/4/2026 at 1:30 PM	$97.00	$24.99
Previous close 09/04/2026	$96.95	$24.99
Consolidated volume 09/04/2026
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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	AGG	SPAB
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst

Main metrics

Last update 9/4/2026 at 1:30 PM

Live

Closed

	AGG	SPAB
Last price	$97.00	$24.99
1D performance	+0.05%	+0.00%
AuM	$138.24 B	$10.19 B
E/R	0.03%	0.03%

Characteristics

	AGG	SPAB
Management strategy	Passive	Passive
Provider	iShares	State Street Investment Management
Benchmark	Bloomberg US Aggregate Bond Index	Bloomberg US Aggregate Bond Index
N° of holdings	10356	7063
Asset class	Bonds	Bonds
Trailing 12m distribution yield	Join	Join
Inception date	September 22, 2003	May 23, 2007
ESG	No	No

More AGG data on Trackinsight

More SPAB data on Trackinsight

Exposure

Countries

AGG

USA

77.45%

Other

22.55%

SPAB

USA

75.76%

Other

24.24%

Sectors

AGG

Sovereign

47.55%

Finance

10.22%

Industrials

7.11%

Other

35.12%

SPAB

Sovereign

46.7%

Finance

10.36%

Industrials

9.6%

Other

33.34%

Diversification

AGG

Total weight of top 15 holdings out of 15

8.32%

SPAB

Total weight of top 15 holdings out of 15

6.21%

Top 15 holdings

Data as of July 31, 2026

AGG

BlackRock Cash Funds - Institutional

2.85%

USA, Notes 4.625% 15feb2035, USD (B-2035)

0.42%

USA, Notes 4% 28feb2030, USD (H-2030)

0.41%

USA, Notes 4.25% 15nov2034, USD (F-2034)

0.41%

USA, Notes 4.375% 15may2034, USD (C-2034)

0.40%

USA, Notes 4.125% 15feb2036, USD (B-2036)

0.40%

USA, Notes 3.875% 15aug2034, USD (E-2034)

0.40%

USA, Notes 4.25% 15aug2035, USD (E-2035)

0.40%

USA, Notes 4.25% 15may2035, USD (C-2035)

0.39%

USA, Notes 4.5% 15nov2033, USD (F-2033)

0.39%

USA, Notes 4% 15feb2034, USD (B-2034)

0.39%

USA, Notes 4% 15nov2035, USD (F-2035)

0.38%

USA, Notes 3.875% 15jul2028, USD (AQ-2028)

0.36%

USA, Notes 3.875% 15jun2028, USD (AP-2028)

0.36%

USA, Notes 3.875% 15aug2033, USD (E-2033)

0.35%

SPAB

USA, Notes 3.5% 15dec2028, USD (AV-2028)

0.77%

USA, Notes 4% 15nov2035, USD (F-2035)

0.46%

USA, Notes 4.375% 30nov2028, USD (AG-2028)

0.43%

USA, Notes 3.5% 31jan2028, USD (U-2028)

0.42%

USA, Notes 3.875% 31mar2031, USD (W-2031)

0.41%

USA, Notes 3.375% 31dec2027, USD (BM-2027)

0.39%

USA, Notes 4.25% 15nov2034, USD (F-2034)

0.39%

USA, Notes 4.25% 15aug2035, USD (E-2035)

0.38%

USA, Notes 4.375% 15may2036, USD (C-2036)

0.38%

US01F0526800

0.38%

USA, Notes 4.375% 15may2034, USD (C-2034)

0.36%

USA, Notes 3.875% 15aug2033, USD (E-2033)

0.36%

USA, Notes 4.5% 15nov2033, USD (F-2033)

0.36%

USA, Notes 4.625% 15feb2035, USD (B-2035)

0.36%

USA, Notes 3.875% 15aug2034, USD (E-2034)

0.36%

Frequently asked questions about AGG and SPAB

How have the AGG and SPAB ETFs performed in 2026?

As of September 4, 2026, AGG is down -0.32% year-to-date (YTD), while SPAB has lost -0.3%. That puts SPAB better performer ahead so far this year.

Which ETF is attracting more investor money: AGG or SPAB?

Year-to-date, the AGG ETF saw +$7.02B in flows, compared to +$1.18B for SPAB.

Which ETF is more volatile: AGG or SPAB?

Over the past year, AGG had a volatility of 3.67%, while SPAB experienced 3.66%.

Which ETF is bigger: AGG or SPAB?

As of September 4, 2026, AGG holds $138.24 B in assets under management (AUM), while SPAB manages $10.19 B.

What sectors do the AGG and SPAB ETFs invest in?

AGG leans toward sectors like Sovereign, Finance and Industrials. Meanwhile, SPAB focuses on Sovereign, Finance and Industrials.

What are the top holdings of the AGG ETF and SPAB ETF?

AGG top holdings include BlackRock Cash Funds - Institutional, USA, Notes 4.625% 15feb2035, USD (B-2035) and USA, Notes 4% 28feb2030, USD (H-2030). SPAB holds in its top three: USA, Notes 3.5% 15dec2028, USD (AV-2028), USA, Notes 4% 15nov2035, USD (F-2035) and USA, Notes 4.375% 30nov2028, USD (AG-2028).

AGGvsSPABETF Comparison

iShares Core U.S. Aggregate Bond ETF

State Street SPDR Portfolio Aggregate Bond ETF

AGG vs SPAB performance and flow charts

Performance

Cumulative Flows

Get all the metrics on this page, and more, through a reliable ETF data feed

Countries

Sectors

Diversification

Top 15 holdings

How have the AGG and SPAB ETFs performed in 2026?

As of September 4, 2026, AGG is down -0.32% year-to-date (YTD), while SPAB has lost -0.3%. That puts SPAB better performer ahead so far this year.

Which ETF is attracting more investor money: AGG or SPAB?

Year-to-date, the AGG ETF saw +$7.02B in flows, compared to +$1.18B for SPAB.

Which ETF is more volatile: AGG or SPAB?

Over the past year, AGG had a volatility of 3.67%, while SPAB experienced 3.66%.

Which ETF is bigger: AGG or SPAB?

As of September 4, 2026, AGG holds $138.24 B in assets under management (AUM), while SPAB manages $10.19 B.

What sectors do the AGG and SPAB ETFs invest in?

AGG leans toward sectors like Sovereign, Finance and Industrials. Meanwhile, SPAB focuses on Sovereign, Finance and Industrials.

What are the top holdings of the AGG ETF and SPAB ETF?

Which ETF is more diversified: AGG or SPAB?

AGG holds 13243 securities with 8.32% of its assets in the top 15. SPAB has 8468 securities and a top 15 weight of 6.21%.

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