Data as of Oct 28, 2026.
CGBL vs MBB: Differences, Returns & Fees
Over the year to Oct 28, 2026, CGBL returned +7.1% to MBB's −0.8%; 0% of their weight is in the same names.
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Net assets: $7.9bn on Oct 27, 2026 for Capital Group Core Balanced ETF, and $35.5bn on Oct 28, 2026 for iShares MBS ETF.
Pair scorecard
MBB costs 0.29 points a year less; their one-year returns differ by 7.9 points; MBB is 4.5 times larger.
| Measure | CGBL | MBB |
|---|---|---|
| Return | ||
| Total return, 1 year | +7.1% | −0.8% |
| Drawdown | ||
| Below its high | 3.4%, high on Aug 13, 2026 | |
| Benchmark | ||
| What it tracks | No index, actively managed | Bloomberg U.S. MBS Index |
| Cost and size | ||
| Expense ratio | 0.33% | 0.04% |
| Net assets, as of Oct 26, 2026 | $7.9bn | $35.6bn |
| Holdings | ||
| Holdings in common | 0% | |
| In the S&P 500, by weight | 48% | |
| Top ten holdings, share of the fund | 59.3% | |
Holdings in common uses holdings dated Jun 30, 2026 and Oct 27, 2026. Method
Risk and return
Oct 6, 2023 to Oct 23, 2026 · 159 weekly returnsCGBL returned more: +55.6% to +18.2%. MBB swung less: 5.9% to 10.4%. MBB fell less at its worst: −5.2% to −10.0%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | CGBL | MBB | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +55.6% | +18.2% | CGBL | Price change plus distributions, reinvested. |
| Annualized | +15.6% | +5.6% | CGBL | Total return as a yearly rate. |
| Price return | +46.8% | +4.5% | CGBL | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 10.4% | 5.9% | MBB | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 6.7% | 4.0% | MBB | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −10.0% | −5.2% | MBB | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | 1.02 | 0.20 | CGBL | Return above Treasury bills per unit of volatility. |
| Sortino | 1.58 | 0.29 | CGBL | Return above Treasury bills per unit of downside deviation. |
| Calmar | 1.55 | 1.08 | CGBL | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 159 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, CGBL and MBB hold 0% of their money in the same securities at the same weight. Holdings dated Jun 30, 2026 and Oct 27, 2026.
half
0% in common
Only in one fund ↓
Side by side
CGBL and MBB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
No client brief for this pair: the two funds' holdings are dated 119 days apart.
Over the year to Oct 28, 2026 it returned +7.1% with distributions reinvested, against +7.5% for its benchmark, the 60%/40% S&P 500 Index/Bloomberg U.S. Aggregate Index.
CGBL is actively managed and tracks no index. The prospectus expense ratio is 0.33% a year. By its holdings filed for Jun 30, 2026, 48% of the fund by weight is stocks the S&P 500 also holds, across 77 positions, with the top ten at 59.3%. It sat 3.4% below its high of Aug 13, 2026 on Oct 28, 2026.
MBB
MBB tracks an index of mortgage-backed securities. Over the year to Oct 28, 2026 it returned −0.8% with distributions reinvested, against −1.1% for its benchmark, the Bloomberg U.S. MBS Index. The prospectus expense ratio is 0.04% a year.
Questions people ask
- Which returned more over the last year, CGBL or MBB?
- In the year to Oct 28, 2026, with distributions reinvested, CGBL returned +7.1% and MBB −0.8%.
- Which is cheaper, CGBL or MBB?
- MBB is cheaper, by 0.29 percentage points a year. That is about $29 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, CGBL against MBB, data as of Oct 28, 2026. https://etfiq.com/compare/any/cgbl-vs-mbb
ETFIQ. (Oct 28, 2026). CGBL against MBB. Retrieved from https://etfiq.com/compare/any/cgbl-vs-mbb
[CGBL against MBB (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/cgbl-vs-mbb)
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