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ETF Comparisons

AGG vs. SPY

iShares Core U.S. Aggregate Bond ETF

AGG
$—
Today’s Change
— (—)
vs

SPDR S&P 500 ETF Trust

SPY
$—
Today’s Change
— (—)

Correlation

Compare with

Top 10 comparisons with AGG:
Compare:
AGG
Correlation
With:
SPY
SPDR S&P 500 ETF Trust
SwitchBNDVanguard Group, Inc. - Vanguard Total Bond Market ETF1.00SCHZSchwab Strategic Trust - Schwab US Aggregate Bond ETF0.99EAGGiShares Trust - iShares ESG Aware U.S. Aggregate Bond ETF0.99SPABSPDR Series Trust - SPDR Portfolio Aggregate Bond ETF0.99BKAGBNY Mellon ETF Trust - BNY Mellon Core Bond ETF0.99AVIGAmerican Century ETF Trust - Avantis Core Fixed Income ETF0.99IUSBBlackRock Institutional Trust Company N.A. - iShares Core Total USD Bond Market ETF0.98BIVVanguard Group, Inc. - Vanguard Intermediate-Term Bond ETF0.98FLCBFranklin Templeton ETF Trust - Franklin U.S. Core Bond ETF0.98BBAGJ.P. Morgan Exchange-Traded Fund Trust - JPMorgan BetaBuilders U.S. Aggregate Bond ETF0.98

Top 10 shared holdings

The top 10 holdings shared by AGG and SPY:

There are no shared holdings.
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1M
3M
6M
YTD
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3Y
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Performance Measures**

for the time period Sep 26, 2003 to Dec 12, 2025

Returns

1M Trailing Return:

3M Trailing Return:

AGG

-0.3%

0.2%

SPY

-0.2%

4.0%

Diff.

-0.1%

-3.8%

Measures of Risk or Volatility

Max Drawdown:

Standard Deviation:

AGG

-18.4%

5.2%

SPY

-55.2%

18.7%

Diff.

+36.8%

-13.5%

Measures of Risk-Adjusted Performance

Sharpe Ratio:

Calmar Ratio:

AGG

0.61

0.17

SPY

0.66

0.20

Diff.

-0.05

-0.03

AGGiShares Core U.S. Aggregate Bond ETF
SPYSPDR S&P 500 ETF Trust

What is AGG?

The iShares Core U.S. Aggregate Bond ETF seeks investment results that correspond generally to the price and yield performance before fees and expenses of the total United States investment grade bond market as defined by the Bloomberg U.S. Aggregate Bond Index.

Snapshot
**

AGG iShares Core U.S. Aggregate Bond ETF
SPY SPDR S&P 500 ETF Trust
Inception date
Sep 22, 2003
Jan 22, 1993
Expense ratio
0.03%
0.09%
AGG has a lower expense ratio than SPY by 0.06%. This can indicate that it’s cheaper to invest in AGG than SPY.
Type
US Bonds
US Equities
AGG targets investing in US Bonds, while SPY targets investing in US Equities.
Fund owner
Blackrock (iShares)
State Street (SPDR)
AGG is managed by Blackrock (iShares), while SPY is managed by State Street (SPDR).
Volume (1m avg. daily)
$631,408,505
$33,257,618,740
Both AGG and SPY are considered high-volume assets. They’re less likely to be affected by issues like slippage and failed orders on Composer than low-volume assets.
AUM
$91,680,069,240
$400,404,126,565
AGG has more assets under management than SPY by $308,724,057,325. Higher AUM can be associated with better liquidity and lower slippage in trading.
Associated index
Bloomberg US Aggregate Bond Index
S&P 500 Index
AGG is based off of the Bloomberg US Aggregate Bond Index, while SPY is based off of the S&P 500 Index
Inverse/Leveraged
No
No
Neither AGG nor SPY use an inverse or leveraged strategy.
Passive/Active
Passive
Passive
AGG and SPY both use a Passive investing strategy. In an actively managed fund, the fund manager makes decisions about how funds are invested. A passively managed fund typically tries to track or follow a market index.
Dividend
No
No
AGG and SPY may offer dividends. The frequency and yield of the dividend may not be the same.
Prospectus
View
View
SPY may issue a K1, while AGG does not. You can find non-K1 alternatives for SPY in its “Related ETFs” section.

Trading Strategies
Related toAGG

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Category

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OOS Cumulative Return

—

Trading Strategies
Related toSPY

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Category

Semiconductors, mean reversion, momentum, trend filter, RSI, leveraged ETFs, tactical, energy, commodities

OOS Cumulative Return

1644%

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Disclaimers

*

We show information directly obtained from our data provider, Xignite. Data shown here is provided by Xignite, an unaffiliated third party. Composer believes the information shown here is reliable, but has not been verified and there is no guarantee that the information is accurate.

**

We show information based on calculations performed by Composer using data from our provider. Information provided here is based on calculations performed by Composer using data sourced from Xignite, an unaffiliated third party. Composer believes this information is reliable, but has not verified the data and there is no guarantee that the calculations are accurate.