State Street SPDR Portfolio Mortgage Backed Bond ETF

Frequently Asked Questions About SPMB

What does SPMB invest in?

The State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) aims to mirror the price and yield performance of the Bloomberg U.S. MBS Index, prior to accounting for fees and expenses. This cost-effective exchange-traded fund provides exposure to investment-grade agency mortgage-backed securities within the U.S. bond market. It is part of the State Street SPDR Portfolio lineup, a series of low-cost funds designed as core components for broad diversification across key asset classes. The fund's portfolio undergoes rebalancing on the last business day of each month.

What is the expense ratio of SPMB?

State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) charges an expense ratio of 0.04%. This is the annual fee deducted from fund assets to cover management and operations.

What is SPMB's dividend yield?

SPMB's trailing-twelve-month yield is 4.14%, calculated from the sum of dividends over the past year divided by the current price.

What is the duration of SPMB?

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

What is the credit quality of SPMB?

SPMB'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 SPMB?

Yield to maturity (YTM) is the total return you'd earn from SPMB if every bond in the portfolio is held to maturity at the current price. SPMB'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.