Whether you seek broad index or targeted exposures, fixed income ETFs offer diversification across numerous bond issues at a lower cost than their mutual fund peers.
US-listed fixed income ETF assets have grown at an annualized rate of about 35% since 2002 to reach $1.2 trillion,1 as a result of their transparency, liquidity, flexibility, and more importantly low cost.
With a median net expense ratio of just 0.29% versus 0.61% for fixed Income mutual funds, fixed income ETFs are, on average, 52% lower cost than their mutual fund counterparts. The median net expense ratio for an active fixed income ETF is also lower versus its active fixed income mutual fund peer, 0.40% vs 0.63%.2 The difference in costs is a result of the different operating structures of the two investment vehicles that lead to higher operating expenses for mutual funds relative to ETFs.
While both ETFs and mutual funds must distribute any capital gains to shareholders at the end of each year, decreasing their return on investment, ETFs generally distribute fewer capital gains. The improved tax profile for ETFs is a result of the tax efficient in-kind redemption process used to meet shareholder redemptions. Additionally, the ability for investors to transact with each other in the secondary market when buying or selling ETF shares reduces the number of primary market transactions (creation/redemptions) needed for ETFs, especially for the small number of ETFs that cannot deliver all securities in-kind (e.g., some active fixed income strategies and certain securities within emerging market funds).
Mutual funds are not structured to support this tax efficiency. Because mutual fund investors interact only with a fund, all inflows and outflows are in the form of cash – not with the underlying securities like ETFs. As a result, when mutual funds have redemptions, fund managers must sell securities to raise cash to meet the redemption, creating a possible capital gains event for all shareholders.
The difference in capital gains distributions between ETFs and mutual funds is staggering. In 2021, just 11% of all ETFs distributed capital gains compared to 69% of mutual funds. For fixed income, just 23% of ETFs distributed capital gains compared to 42% of mutual funds.3 And as shown below, over three years, fixed income ETFs distributed less capital gains then mutual funds overall, and when broken out into active and index based strategies.4
Percentage of Funds that Distributed a Capital Gain (3 year Average 2019-2021)
Fixed income ETFs can also help investors to reduce their total cost of ownership, offering:
In 95% of the cases, SPDR® fixed income ETFs cost less than their mutual fund peers. With a median expense ratio of just 0.23% versus 0.58% for their mutual fund peers, in most cases SPDR fixed income ETFs cost about half of a comparable mutual fund.5
Cost differences vary drastically across fixed income asset classes. In some instances, the SPDR fixed income ETF is more than 17x less expensive than the median mutual fund in the comparable Morningstar category.6 These savings can meaningfully impact performance, especially in a low-yield environment.
Providing exposures to various maturities, credit qualities, sectors, geographies and currencies, the range of low-cost SPDR fixed income ETFs brings flexibility and opportunities for greater diversification to the part of an investment portfolio that historically has been challenging to build, allowing you to:
ETFs can be useful tools to gain different exposures — both within and beyond the Agg. In fact, you can rebuild the Agg — making tactical overweights and underweights to optimize specific yield and duration preferences — with the range of SPDR fixed income ETFs. And using ETFs to expand beyond the Agg and/or dissect the Agg's sectors to target specific risk and return characteristics can better position portfolios for the current income regime at a lower cost.
Median SPDR ETF Expense Ratio vs. Comparable Mutual Funds by Broad Category
The SPDR® Treasury suite provides cost-efficient exposure to nominal US Treasuries across various maturity bands. These exposures offer you the ability to position along the yield curve to tailor portfolio risk and income characteristics with agility and focus.
Treasuries – SPDR vs. Open End Mutual Funds
The SPDR® Portfolio ETF Corporate Bond suite provides low-cost exposure to broad investment grade corporate bonds across segmented maturity bands. These exposures allow you to position along the corporate credit curve to tailor portfolio risk and income characteristics.
Corporates – SPDR vs. Open End Mutual Funds
SPDR® Portfolio Mortgage Backed Bond ETF (SPMB) is a low-cost ETF that provides exposure to agency mortgage-backed securities of the US Investment Grade bond market. Mutual fund competitors are over 12x the cost of SPMB, as shown below.
SPMB vs. Intermediate Government Open End Mutual Funds
Ancillary bond segments, such as emerging market debt or senior loans, can provide potential benefits to investors who find that mortgages, Treasuries and corporates are too narrow to meet their objectives without overconcentrating the portfolio in any one sector. To seek income and modulate credit risk across a variety of exposures, you can adjust your allocation with SPDR fixed income ETFs that cost less than their mutual fund peers.
Non Agg Sectors – SPDR vs. Open End Mutual Funds
SPDR’s municipal bond suite is managed by Nuveen, a leading municipal bond investment manager with 124 years of asset management experience.7 You can use the SPDR Municipal Bond suite to seek income without overextending on credit risk, while also improving the tax efficiency of your fixed income allocation — all at a lower cost relative to owning single issues or mutual funds.
Municipal Bonds – SPDR vs. Open End Mutual Funds
The low-cost SPDR® Portfolio ETFs™ suite — with over $126 billion in assets — can help you build a customized, low-cost core. With a median expense ratio of just 4 basis points, the SPDR Portfolio ETFs fixed income suite is 93% less expensive than similar mutual funds.8 And the median bid-ask spread of just 1 penny can help you limit trading costs.9
SPDR Low Cost Core Fixed Income Funds vs. Mutual Funds
SPDR also works in partnership with widely revered fixed income managers such as DoubleLine, Blackstone Credit, and Nuveen to offer investors access to a range of skilled active portfolio managers. As shown below, in most cases, SPDR’s active core and non-aggregate bond strategies cost less than comparable mutual funds.
Active Fixed Income SPDR ETFs vs. Mutual Fund Peers
SPDR fixed income ETFs are built and powered by the same expertise and resources that have made us one of the world’s leading fixed income institutional managers and a pioneer in ETF investing. As a global leader in fixed income ETF investing, State Street Global Advisors offers:
The scale to specialize
A proven track record
With elevated volatility in both equity and fixed income markets amid a restrictive Federal Reserve and persistent inflation, we expect strong flows into low-cost, tax-efficient ETFs to continue. As their benefits become more broadly explored and understood, fixed income ETFs will continue to increase in number and variety, creating greater application opportunities.