Data as of Oct 28, 2026.
MBB vs PULS: Differences, Returns & Fees
MBB's duration was 5.7 years on Aug 31, 2026 and PULS's 0.7 on May 29, 2026; MBB charges 0.04% to PULS's 0.15%.
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Net assets: $35.5bn on Oct 28, 2026 for iShares MBS ETF, and $19.8bn on Oct 27, 2026 for PGIM Ultra Short Bond ETF.
Pair scorecard
MBB costs 0.11 points a year less; their one-year returns differ by 4.8 points; MBB is 1.8 times larger.
| Measure | MBB | PULS |
|---|---|---|
| Return | ||
| Total return, 1 year | −0.8% | +4.0% |
| Benchmark | ||
| What it tracks | Bloomberg U.S. MBS Index | No index, actively managed |
| Cost and size | ||
| Expense ratio | 0.04% | 0.15% |
| Net assets, as of Oct 26, 2026 | $35.6bn | $19.8bn |
| Holdings | ||
| Holdings in common | 0% | |
Holdings in common uses holdings dated May 29, 2026 and Aug 31, 2026. Method
What they share
By the books each fund has filed, MBB and PULS hold 0% of their money in the same securities at the same weight. Holdings dated May 29, 2026 and Aug 31, 2026.
half
0% in common
Only in one fund ↓
Side by side
MBB and PULS on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
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.
PULS
PULS is actively managed and tracks no index. Over the year to Oct 28, 2026 it returned +4.0% with distributions reinvested. The prospectus expense ratio is 0.15% a year.
Questions people ask
- Which returned more over the last year, MBB or PULS?
- In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and PULS +4.0%.
- Which is cheaper, MBB or PULS?
- MBB is cheaper, by 0.11 percentage points a year. That is about $11 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, MBB against PULS, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-puls
ETFIQ. (Oct 28, 2026). MBB against PULS. Retrieved from https://etfiq.com/compare/any/mbb-vs-puls
[MBB against PULS (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/mbb-vs-puls)
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