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iShares MBS ETF (MBB) Price & Chart

MBB ETF Chart & Stats

$90.49
At close: 4:00 PM EDT
$90$92.527 Jul10 Aug24 Aug8 Sep21 Sep5 Oct19 Oct
Day’s Range
$90.23 - $90.67
52-Week Range
$88.58 - $96.97
Previous Close
$90.22
Volume
6.13M
Average Volume (3M)
4.76M
AUM
35.27B
NAV
90.35
Expense Ratio
0.04%
Holdings Count
0
Beta
0.05
Inception Date
Mar 13, 2007
Shares Outstanding
389,300,000
Standard Deviation
N/A

ETF Overview

iShares MBS ETF

The iShares MBS ETF (Ticker: MBB) is a distinguished investment vehicle tailored for those seeking exposure to the stability and reliability of government-backed securities within the mortgage sector. As a premier offering in the Government category, this ETF specifically concentrates on mortgage-backed securities (MBS) that are rigorously selected to meet investment-grade criteria, ensuring a high level of credit quality and reduced default risk. MBB stands out by immersing investors in the niche of Broad Maturities, providing a diversified portfolio of securities that span various time horizons. This approach allows investors to benefit from a balanced blend of short-, medium-, and long-term maturities, which can help to mitigate interest rate risks while optimizing returns over time. The fund is expertly designed to mirror the performance of the Bloomberg U.S. MBS Index, a benchmark that captures the essence of the mortgage-backed securities market. With a focus on investment-grade MBS, MBB offers an appealing choice for conservative investors looking to enhance their fixed-income portfolio with securities backed by the robust guarantees of government-sponsored entities like Fannie Mae, Freddie Mac, and Ginnie Mae. The fund's strategic composition aims to deliver steady income and potential capital appreciation, making it an attractive option for those seeking to harness the benefits of mortgage-backed securities in a carefully curated and manageable format.

iShares MBS ETF (MBB) Fund Flow Chart

FlowsPrice-703M139M982M2B$89$91$93$95Nov '25Jan '26Mar '26May '26Jul '26Sep '26
iShares MBS ETF (MBB) 1 year Net Flows: -$5B

MBB ETF FAQ

What was MBB’s price range in the past 12 months?
MBB’s lowest price in the past 12 months was $88.58 and its highest was $96.97.
What is the AUM of MBB?
As of Oct 19, 2026, the AUM of MBB is $35.27B.
Does MBB pay dividends?
Yes. MBB pays dividends monthly. Its most recent dividend was $0.37 per share, and its annual dividend yield is 4.50%. See more information on MBB dividends here.
How many shares outstanding does MBB have?
MBB has 389,300,000 shares outstanding.
Which hedge fund is a major shareholder of MBB?
Bridgewater Associates, LP is among the largest hedge fund holders of MBB, with a position valued at $131.1M.