iShares MBS ETF

Frequently Asked Questions About MBB

What does MBB invest in?

The iShares MBS ETF, known by its symbol MBB, is structured to mirror the financial performance of a specific index. This index is made up of premium, mortgage-backed pass-through securities that have been either provided or secured by agencies of the United States government.

What is the expense ratio of MBB?

iShares MBS ETF (MBB) charges an expense ratio of 0.04%. This is the annual fee deducted from fund assets to cover management and operations.

What is MBB's dividend yield?

MBB's trailing-twelve-month yield is 4.37%, calculated from the sum of dividends over the past year divided by the current price.

What is the duration of MBB?

Effective duration measures MBB's sensitivity to interest-rate changes — a duration of 6 means a 1% rate move shifts NAV by roughly 6% in the opposite direction. MBB's current duration is published on the fund's factsheet on the issuer's website.

What is the credit quality of MBB?

MBB's credit quality breakdown — the share of holdings rated AAA through CCC and below — is published on the fund's factsheet. Higher-quality (investment-grade) funds yield less but carry less default risk than high-yield / junk bond funds.

What is the yield to maturity of MBB?

Yield to maturity (YTM) is the total return you'd earn from MBB if every bond in the portfolio is held to maturity at the current price. MBB's YTM is published on the fund's factsheet on the issuer's website — it differs from the trailing-12-month yield because YTM reflects current bond prices rather than historical income paid.