iShares MBS ETF MBB · NASDAQ
$90.22 -0.33% (-$0.30)
Summary
iShares MBS ETF is an ETF - a fund traded on an exchange like a stock - run by IShares. Positions inside: 10,816. The ten largest make up 9.7% of the fund.
- Yearly costs
- 0.04%
- Fund size
- $35.3B
- Positions
- 10,816
- Dividend yield
- 4.48%
- Running since
- 2007
What speaks for it
- Costs of 0.04% a year are below the middle of comparable funds (0.20%).
- Widely spread: the ten largest positions make up only 9.7% of the fund.
- A large fund with $35.3B under management.
- Easy to buy and sell: about $347.0M changes hands a day.
- It has been running since 2007.
What to watch
- 100% of the fund is in one country (United States).
A fund has no Bulios Score and no Fair Price of its own - both are computed from the results of a single company. This page shows what is inside the fund and what it costs instead.
Price
Performance
- 1 month
- -1.2%
- 3 months
- -3.6%
- This year
- -5.3%
- 1 year
- -6.0%
- 3 years
- +4.8%
- 5 years
- -16%
- 10 years
- -18%
What is inside?
Widely spread- 1 BLACKROCK CASH CL INST SL AGENCY 4.2%
- 2 FHLMC 30YR UMBS SUPER 2.00% 05/01/2051 1.1%
- 3 GNMA2 30YR TBA 6.00% 11/19/2026 0.6%
- 4 UMBS 30YR TBA(REG A) 5.50% 11/12/2026 0.6%
- 5 GNMA2 30YR 5.00% 11/20/2054 0.6%
- 6 GNMA2 30YR 2.00% 10/20/2051 0.5%
- 7 GNMA2 30YR 2.00% 12/20/2051 0.5%
- 8 FNMA 30YR UMBS 2.00% 12/01/2051 0.5%
- 9 GNMA2 30YR TBA(REG C) 5.50% 11/19/2026 0.5%
- 10 GNMA2 30YR 2.50% 07/20/2051 0.5%
Positions in the fund: 10,816. The ten largest make up 9.7% of it.
Composition as of Oct 18, 2026.
Where is it spread?
One countryBy country
- United States 100%
Largest country: United States (100%).
What does it cost me?
Cheap- A year from $10,000
- $4.00
- Over 20 years
- $201
From every $10,000 invested the fund takes $4.00 a year. You do not pay it separately - it is taken out of the fund's value. Over 20 years at 5% yearly growth that adds up to about $201.
How has it done?
Losing value- A year on average, 10 years
- -1.9%
- Deepest drop
- -22%
- Yearly volatility
- 5.0%
Average yearly decline over the last ten years: 1.9%. Deepest drop in these years: 22% below the earlier high.
Does it pay dividends?
Yes, it pays out- Yield
- 4.48%
- Payments a year
- 12
- Last payment
- $0.34
Over the last 12 months it paid $4.04 per share, which is 4.48% of today's price. The last payment was $0.34 on Oct 1, 2026.
Is it easy to buy and sell?
Very easy- Traded a day
- $347.0M
- Shares a day
- 3.8M
On an average day about $347.0M of the fund changes hands.