Investors seeking yield were once confined to purchasing individual bonds or traditional mutual funds. Today, the landscape of fixed-income investing has been fundamentally reshaped by the advent of Exchange Traded Funds (ETFs), offering low-cost access to a vast array of bond exposures. This transformation, spanning decades, has brought unprecedented transparency and efficiency to a market historically characterized by opacity and uneven access.
The Evolution of Bond Investing: From Voice to Exchange
The journey to modern bond investing, as discussed by Barry Ritholtz and Stephen Laipply, Managing Director and Global Head of iShares Fixed Income ETFs at BlackRock, highlights a dramatic shift. Laipply recalls the pre-ETF era of the late nineties, describing bond purchasing as a “non-trivial exercise.” It was a “voice-driven market” where investors had to “pick up the phone, you call several people, you get several quotes, hoping the market’s not moving on you at the same time, not quite sure if you exactly got the best price.” This environment suffered from “very little transparency, and kind of uneven access.”
The introduction of the first bond ETF in Canada in 2000, followed by the US in 2002, marked a revolutionary change. ETFs opened up this world to transparency, offering a portfolio of bonds that trades on an exchange. Investors can now “see the price on exchange every second, ticking by,” and trade without the need for phone calls, knowing they are “getting the best price that’s quoted on exchange.” This shift from an opaque, dealer-driven market to a transparent, exchange-traded one has been a “shocking, revolutionary thing,” according to Laipply.
ETFs Outpace Mutual Funds in Transparency and Agility
While bond mutual funds have long been an option, particularly in 401(k)s, fixed-income ETFs present distinct advantages. A key differentiator is pricing. Mutual funds typically price once a day, at the end of the day, leaving investors uncertain of their valuation during market hours. In contrast, bond ETFs allow investors to “trade intraday at a known price,” a feature many advisors and investors find highly attractive.
Laipply explains the practical benefit: “let’s just say you get a strong inflation number or an employment report or what have you, and you want to move on that.” With a bond ETF, investors can act immediately on exchange, assessing the price in real-time. Furthermore, ETFs offer superior transparency regarding holdings, with most bond ETFs providing daily reporting compared to the quarterly reporting common for mutual funds. This daily insight extends even to active strategies within the ETF wrapper, attracting investors seeking greater visibility into their portfolios.
Explosive Growth and Diverse Offerings
The selection of bond ETFs has exploded, particularly since the ETF rule in 2019 and the subsequent market dynamics of the pandemic and policy responses. Today, there are “over a thousand bond ETFs in the United States alone.” BlackRock’s iShares, a significant player in the space, manages “over 160 in the US” with “over $900 billion in assets in the US, and $1.3 trillion globally.”
This vast selection spans virtually every asset class imaginable, including Treasuries, credit, high yield, and emerging markets. Beyond broad categories, investors can find ETFs with specific maturity cuts, outcome overlays, hedged products, and an increasing number of active strategies, offering unparalleled customization and diversification capabilities.
Resilience Under Market Stress: 2020 and 2022
A persistent criticism leveled against ETFs, particularly on the equity side, has been their potential performance during periods of market stress. These concerns were notably disproven during the pandemic crash for equity ETFs, and similar criticisms regarding fixed-income ETFs have also been addressed by recent market events.
Laipply highlights the Global Financial Crisis as an early test, where ETFs provided valuable transparency during a chaotic period. However, it was the 2020 COVID crisis that truly solidified investor confidence. During February and March 2020, when even some Treasuries and investment-grade bonds struggled to trade, ETFs proved their mettle. “ETFs, even though they may have been trading at a discount, were tradable, and they were trading in record volume,” Laipply notes. This performance “finally got a lot of people over the hump” and served as the crucial test many investors had been waiting for.
The subsequent “rate shock” of 2022 further cemented this confidence. Laipply described it as “icing on the cake – another stress episode, which further cemented investor confidence in the wrapper.” This demonstrated resilience under varied and severe market conditions has been a key factor in the widespread adoption of fixed-income ETFs.
As money market yields currently hover around 3.6% to 3.7%, the ability of fixed-income ETFs to provide transparent, liquid, and diversified exposure remains a compelling proposition for investors seeking yield and stability in their portfolios. The journey from a voice-driven, opaque market to one characterized by real-time pricing and robust performance through crises underscores the profound and lasting impact of ETFs on fixed-income investing.


