Data as of Oct 28, 2026.
MBB vs TIP: Differences, Returns & Fees
MBB's duration was 5.7 years on Aug 31, 2026 and TIP's 6.3 on Jul 31, 2026; MBB charges 0.04% to TIP's 0.18%.
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Net assets: $35.5bn on Oct 28, 2026 for iShares MBS ETF, and $14.6bn on Oct 27, 2026 for iShares TIPS Bond ETF.
Pair scorecard
MBB costs 0.14 points a year less; their one-year returns differ by 0.2 points; MBB is 2.4 times larger.
| Measure | MBB | TIP |
|---|---|---|
| Return | ||
| Total return, 1 year | −0.8% | −1.0% |
| Benchmark | ||
| What it tracks | Bloomberg U.S. MBS Index | ICE U.S. Treasury Inflation Linked Bond Index |
| Cost and size | ||
| Expense ratio | 0.04% | 0.18% |
| Net assets, as of Oct 26, 2026 | $35.6bn | $14.6bn |
| Holdings | ||
| Holdings in common | 0% | |
Holdings in common uses holdings dated Jul 31, 2026 and Aug 31, 2026. Method
Risk and return
Mar 23, 2007 to Oct 23, 2026 · 1,022 weekly returnsEach against its own benchmark: MBB against SPMB, Feb 6, 2009 to Oct 23, 2026; TIP against VTP, Jul 18, 2025 to Oct 23, 2026.
TIP returned more: +87.7% to +63.4%. MBB swung less: 4.2% to 6.1%. TIP fell less at its worst: −14.2% to −17.4%.
Full scorecard
19 measures, with how each is measured Open ↓
| Measure | MBB | TIP | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +63.4% | +87.7% | TIP | Price change plus distributions, reinvested. |
| Annualized | +2.5% | +3.3% | TIP | Total return as a yearly rate. |
| Price return | −9.6% | +5.2% | TIP | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 4.2% | 6.1% | MBB | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 2.9% | 4.4% | MBB | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −17.4% | −14.2% | TIP | Deepest fall from a high to the low after it. |
| Upside capture | 77.8% | 99.7% | Share of its benchmark's rise caught in the weeks it rose. | |
| Downside capture | 78.4% | 101.8% | Share of its benchmark's fall taken in the weeks it fell. Lower is better. | |
| Beta | 0.76 | 0.99 | Not an edge | How far it moves for each 1% its benchmark moves. |
| R squared | 0.76 | 0.98 | Not an edge | Share of its weekly moves its benchmark explains. |
| Risk-adjusted | ||||
| Sharpe | 0.24 | 0.30 | TIP | Return above Treasury bills per unit of volatility. |
| Sortino | 0.35 | 0.41 | TIP | Return above Treasury bills per unit of downside deviation. |
| Treynor | 0.009 | −0.023 | Return above Treasury bills per unit of beta. | |
| Calmar | 0.15 | 0.23 | TIP | Annualized return divided by the max drawdown. |
| Against the benchmark | ||||
| Benchmark | SPMB | VTP | The ETF each fund is measured against. | |
| Alpha | +0.1% a year | −0.2% a year | Not significant | Yearly return beyond what its beta to the benchmark predicts. |
| Alpha t-stat | 0.26 | −0.56 | Not an edge | How sure the alpha is. Below 2, it could be chance. |
| Alpha range | −0.8% to +1.1% | −1.0% to +0.6% | Includes zero | The 95% range for the yearly alpha. |
| Information ratio | −0.03 | −0.45 | Return against its benchmark per unit of tracking error. | |
| Tracking error | 2.3% | 0.4% | Not an edge | How far weekly returns stray from the benchmark, annualized. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 1,022 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, MBB and TIP hold 0% of their money in the same securities at the same weight. Holdings dated Jul 31, 2026 and Aug 31, 2026.
half
0% in common
Only in one fund ↓
Side by side
MBB and TIP on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
MBB and TIP do different jobs. What does each one do in a portfolio?
- What each follows. MBB follows Bloomberg U.S. MBS Index and TIP follows ICE U.S. Treasury Inflation Linked Bond Index.
- Holdings in common. 0% of the weight is in the same securities (holdings dated Aug 31, 2026 and Jul 31, 2026).
- Number of holdings. MBB holds 10,813 positions and TIP holds 48.
Data as of Oct 28, 2026.
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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.
TIP
TIP tracks an index of TIPS Bond. Over the year to Oct 28, 2026 it returned −1.0% with distributions reinvested, against −0.8% for its benchmark, the ICE U.S. Treasury Inflation Linked Bond Index. The prospectus expense ratio is 0.18% a year.
Questions people ask
- Which returned more over the last year, MBB or TIP?
- In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and TIP −1.0%.
- Which is cheaper, MBB or TIP?
- MBB is cheaper, by 0.14 percentage points a year. That is about $14 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 TIP, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-tip
ETFIQ. (Oct 28, 2026). MBB against TIP. Retrieved from https://etfiq.com/compare/any/mbb-vs-tip
[MBB against TIP (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/mbb-vs-tip)
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