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ETF comparison

MBB vs VTIP

US Aggregate Bond vs TIPS.

iShares MBS ETF · Vanguard Short-Term Inflation-Protected Securities Index Fund ETF Shares

Holdings overlap

Weighted by ISIN/CUSIP
0.0 %

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

MBB unmatched 98.1% Shared 0.0% VTIP unmatched 99.0%

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 MBB only
11,144 positions
Shared
0 positions
In VTIP only
25 positions

Side by side

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%
VTIP

Vanguard Short-Term Inflation-Protected Securities Index Fund ETF Shares

Vanguard · TIPS

86 composite / 100
Expense ratio
0.030%
Net assets
$73.01B
whole fund, 4 share classes
TTM yield
4.81%
Top-10 conc.
49.8%

Sub-score comparison

96
Cost
97
52
Tax efficiency
48
100
Liquidity
100
100
Concentration
N/A
—
Tracking quality
—
MBB sub-score VTIP

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

Cost difference

VTIP is 1 bps cheaper than MBB. On a $100,000 position that's about $10/yr more in fees for MBB.

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 MBB vs VTIP.

Top shared holdings

0 shared in total

No shared holdings between these funds.

Only in MBB

11,144 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%

Only in VTIP

25 total
  • United States Treasury Inflation Indexed Bonds 5.39%
  • United States Treasury Inflation Indexed Bonds 5.33%
  • United States Treasury Inflation Indexed Bonds 5.30%
  • United States Treasury Inflation Indexed Bonds 5.14%
  • United States Treasury Inflation Indexed Bonds 4.97%
  • United States Treasury Inflation Indexed Bonds 4.83%
  • United States Treasury Inflation Indexed Bonds 4.83%
  • United States Treasury Inflation Indexed Bonds 4.74%
  • United States Treasury Inflation Indexed Bonds 4.70%
  • United States Treasury Inflation Indexed Bonds 4.59%

Related comparisons

More comparisons with MBB

More comparisons with VTIP

Percentages are holdings overlap with the named fund.

Open MBB or VTIP 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.