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ETF comparison

AGG vs ZROZ

US Aggregate Bond vs US Treasury (Long).

iShares Core U.S. Aggregate Bond ETF · PIMCO 25+ Year Zero Coupon U.S. Treasury Index Exchange-Traded Fund

Holdings overlap

Weighted by ISIN/CUSIP
0.0 %

0 positions appear in both funds. Buying equal dollars of AGG and ZROZ would leave roughly 0.0% of each dollar exposed to the same underlying securities.

AGG only 99.0% Shared 0.0% ZROZ only 99.9%
In AGG only
13,183 positions
Shared
0 positions
In ZROZ only
20 positions

Side by side

AGG

iShares Core U.S. Aggregate Bond ETF

iShares · US Aggregate Bond

89 composite / 100
Expense ratio
0.030%
Net assets
$138.85B
TTM yield
4.01%
Top-10 conc.
7.1%
ZROZ

PIMCO 25+ Year Zero Coupon U.S. Treasury Index Exchange-Traded Fund

PIMCO · US Treasury (Long)

66 composite / 100
Expense ratio
0.15%
Net assets
$1.37B
TTM yield
5.36%
Top-10 conc.
55.3%

Sub-score comparison

97
Cost
85
52
Tax efficiency
55
100
Liquidity
62
100
Concentration
35
—
Tracking quality
—
AGG sub-score ZROZ

Tracking quality isn't part of the composite — see what we don't score for why.

Cost difference

AGG is 12 bps cheaper than ZROZ. On a $100,000 position that's about $120/yr more in fees for ZROZ.

Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with AGG vs ZROZ.

Top shared holdings

0 shared in total

No shared holdings between these funds.

Only in AGG

13,183 total
  • BlackRock Funds III 0.52%
  • United States Treasury 0.46%
  • United States Treasury 0.43%
  • United States Treasury 0.42%
  • United States Treasury 0.42%
  • United States Treasury 0.42%
  • United States Treasury 0.41%
  • United States Treasury 0.41%
  • United States Treasury 0.41%
  • United States Treasury 0.40%

Only in ZROZ

20 total
  • UNITED STATES GOVT 5.89%
  • UNITED STATES GOVT 5.88%
  • UNITED STATES GOVT 5.80%
  • UNITED STATES GOVT 5.77%
  • UNITED STATES GOVT 5.48%
  • UNITED STATES GOVT 5.39%
  • UNITED STATES GOVT 5.34%
  • UNITED STATES GOVT 5.34%
  • UNITED STATES GOVT 5.23%
  • UNITED STATES GOVT 5.19%

Open AGG or ZROZ at a brokerage

Both funds trade commission-free at major US brokerages.

Open at Fidelity

Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.

Holdings overlap is the sum of min(weight_a, weight_b) over positions matched on ISIN (CUSIP fallback). Methodology: see /methodology/.

Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.