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ETF comparison

CGCP vs MBB

Both US Aggregate Bond.

Capital Group Core Plus Income ETF · iShares MBS ETF

Holdings overlap

Weighted by ISIN/CUSIP
0.9 %

30 positions appear in both funds. Buying equal dollars of CGCP and MBB would leave roughly 0.9% of each dollar exposed to the same underlying securities.

CGCP unmatched 98.6% Shared 0.9% MBB unmatched 97.2%

Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.

In CGCP only
1,429 positions
Shared
30 positions
In MBB only
11,114 positions

Side by side

CGCP

Capital Group Core Plus Income ETF

Capital Group · US Aggregate Bond

73 composite / 100
Expense ratio
0.34%
Net assets
$8.32B
TTM yield
5.25%
Top-10 conc.
20.5%
MBB

iShares MBS ETF

iShares · US Aggregate Bond

89 composite / 100
Expense ratio
0.040%
Net assets
$36.25B
TTM yield
4.46%
Top-10 conc.
6.8%

Sub-score comparison

66
Cost
96
50
Tax efficiency
52
97
Liquidity
100
85
Concentration
100
—
Tracking quality
—
CGCP sub-score MBB

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

Cost difference

MBB is 30 bps cheaper than CGCP. On a $100,000 position that's about $300/yr more in fees for CGCP.

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 CGCP vs MBB.

Top shared holdings

30 shared in total
# Holding In CGCP In MBB Overlap
1 Freddie Mac 0.21% 0.22% 0.21%
2 Government National Mortgage Association 0.13% 0.15% 0.13%
3 Freddie Mac 0.07% 0.11% 0.07%
4 Fannie Mae 0.06% 0.10% 0.06%
5 Fannie Mae 0.06% 0.16% 0.06%
6 Fannie Mae 0.06% 0.06% 0.06%
7 Freddie Mac 0.43% 0.05% 0.05%
8 Freddie Mac 0.04% 0.04% 0.04%
9 Fannie Mae 0.03% 0.06% 0.03%
10 Fannie Mae 1.45% 0.02% 0.02%
11 Freddie Mac 0.02% 0.18% 0.02%
12 Freddie Mac 0.02% 0.09% 0.02%

Only in CGCP

1,429 total
  • United States Treasury 4.35%
  • United States Treasury 3.27%
  • UMBS, TBA 2.01%
  • United States Treasury 1.73%
  • United States Treasury 1.63%
  • United States Treasury 1.59%
  • United States Treasury 1.58%
  • United States Treasury 1.48%
  • UMBS, TBA 1.40%
  • UMBS, TBA 1.27%

Only in MBB

11,114 total
  • Freddie Mac 1.05%
  • Government National Mortgage Association 0.95%
  • UMBS, TBA 0.83%
  • Government National Mortgage Association 0.67%
  • UMBS, TBA 0.64%
  • Government National Mortgage Association 0.55%
  • Government National Mortgage Association 0.54%
  • Government National Mortgage Association 0.53%
  • Fannie Mae 0.52%
  • Freddie Mac 0.50%

Percentages are holdings overlap with the named fund.

Open CGCP or MBB at a brokerage

Both funds trade commission-free at major US brokerages.

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.