SMBS: The Passive MBS ETF for Cost-Conscious Investors

Friday, Aug 1, 2025 12:47 pm ET2min read
BCS--
VMBS--

Schwab Mortgage-Backed Securities (NYSEARCA:SMBS) is a passive ETF focused on the MBS market with competitive costs. It offers a cost-effective solution for investors looking to invest in the MBS market. The fund is designed to track the Bloomberg Barclays US MBS Index, which includes a broad range of mortgage-backed securities issued in the US. With a low expense ratio of 0.08%, SMBS is an attractive option for investors seeking exposure to the MBS market at a low cost.

Schwab Mortgage-Backed Securities (NYSEARCA:SMBS) is a passive ETF focused on the MBS market with competitive costs. It offers a cost-effective solution for investors looking to invest in the MBS market. The fund is designed to track the Bloomberg Barclays US MBS Index, which includes a broad range of mortgage-backed securities issued in the US. With a low expense ratio of 0.08%, SMBS is an attractive option for investors seeking exposure to the MBS market at a low cost.

Launched on November 19, 2024, SMBS has an assets under management (AUM) of $5.29 billion and a 30-day SEC yield of 4.75%, with an average yield to maturity of 5.05%. The fund invests at least 90% of its assets in investment-grade MBS guaranteed by U.S. federal agencies, such as Ginnie Mae, Fannie Mae, and Freddie Mac. It excludes less liquid and more complex instruments like CMOs, ARMs, and Mega/Giant/Super pools, focusing on a pure-play strategy.

SMBS is a highly vertical fund with 98.61% exposure to residential mortgages guaranteed by federal agencies. Its target duration of 5.30 years makes it suitable for investors with medium to long-term horizons. The fund's monthly distribution and positive spread over Treasuries make it an attractive option for income-oriented investors seeking to complement or replace a Treasury portfolio.

SMBS's passive management ensures that it closely tracks its benchmark, the Bloomberg US MBS Float Adjusted Total Return Index. This transparency and adherence to the benchmark are key advantages of the fund. However, it also means that SMBS will reflect interest rate movements more directly, as it does not have the flexibility to adjust duration and convexity based on market outlooks. This makes it sensitive to changes in Fed monetary policy.

In terms of liquidity, SMBS has a low 30-day bid/ask spread of 0.06% and a current premium/discount ratio of -0.15%, with strong convergence toward 0. Its Morningstar rating meets standard efficiency criteria.

When compared to other MBS-focused ETFs, SMBS stands out due to its low expense ratio of 0.03%, which is competitive even compared to the sector's reference fund, Vanguard Mortgage-Backed Securities Index Fund ETF (VMBS). However, it is important to note that SMBS addresses a highly segmented market in a fully passive way, leaving the burden of building a portfolio asset allocation on the fixed income side to the investor.

In conclusion, Schwab Mortgage-Backed Securities ETF is a low-cost, passive solution for investors seeking exposure to the MBS market. Its competitive expense ratio, transparent composition, and income-oriented nature make it an attractive option for investors with medium to long-term horizons. However, its sensitivity to interest rate changes and lack of flexibility should be considered when allocating to SMBS.

References:
[1] https://seekingalpha.com/article/4807681-smbs-what-you-need-to-know-about-this-passive-mbs-etf
[2] https://finance.yahoo.com/quote/MBB/
[3] https://finance.yahoo.com/news/invesco-p-midcap-quality-etf-102002434.html

SMBS: The Passive MBS ETF for Cost-Conscious Investors

Stay ahead of the market.

Get curated U.S. market news, insights and key dates delivered to your inbox.

Comments



Add a public comment...
No comments

No comments yet