American Funds Short-Term Bond Fund of America® Class F-1 ASBFX

American Funds Short-Term Bond Fund of America’s high-quality portfolio meets investors’ expectations but doesn’t stand out among short-term Morningstar Category peers.

The team’s expanding mix of securitized debt and rates expertise adds depth and diversification. Vincent Gonzales, who has managed the fund since 2016, became principal investment officer in 2022. He now works with securitized specialist Oliver Edmond, who has managed the fund since 2020 and previously contributed as an analyst and as an undisclosed manager before assuming full management duties, ensuring continuity. In November 2025, the firm added rates expert Tom Hollenberg to replace longtime manager John Queen, who led the fund for more than a decade and previously served as its PIO before Gonzales. This growing complementary expertise enhances the team’s ability to manage rate shifts, though maintaining consistent coordination and execution is still a work in progress.

The managers aim to generate more excess returns from active duration (a measure of interest rate sensitivity) management than many peers. The team aims to drive about 40% of excess returns from duration and yield-curve positioning, with sector allocation and security selection making up the rest. The team usually keeps duration within 0.5 years of the fund’s Bloomberg US Government/Credit 1–3 Year ex-Baa Index but sometimes moves beyond that range. For example, in June 2021, expecting persistent inflation and earlier Fed tightening, the team shortened duration to defend against rising rates. At that point, the fund’s 1.3-year duration ran 0.7 years shorter than its index.

Beyond duration, the fund operates as intended by maintaining the strategy’s focus on stability and liquidity through its mix of corporate bonds, securitized debt, and Treasuries; however, this limits its yield potential versus peers. It typically keeps around 80% or more of assets in bonds rated AA or higher, roughly 40 percentage points more than the peer median, while limiting A rated debt to about 10% and avoiding those BBB rated or lower securities.

The fund’s defensive risk profile has weighed on overall results. Since November 2022 (Gonzales’ first full month as PIO), its 4.9% annualized gain through October 2025 trailed almost all category peers. On the bright side, the fund has shown resilience in market downturns. When the S&P 500 lost 33.8% peak to trough in just 23 trading days in early 2020 amid fears about the coronavirus pandemic, this fund’s R6 shares gained 69 basis points. That ranked second best out of nearly 150 distinct peers as measured by the cheapest share class.

Investors who put a big premium on capital preservation may consider this fund, but otherwise more competitive options exist.

This fund's structural preference for higher-rated debt supports its defensive design but limits its return potential compared with most short-term bond peers; it earns an Average Process rating.

High credit quality and liquidity are paramount to this strategy. The managers seek the best relative value opportunities among Treasuries, corporate bonds, and securitized debt while favoring bonds with credit ratings of AA or higher. Exposure to A rated bonds is capped at 10% of assets, and the team steers clear of BBB or below rated bonds. The portfolio's duration can differ by up to half a year from the Bloomberg US Government/Credit 1-3 Year ex-Baa Index's. These portfolio constraints make it difficult for the fund to keep up with most category peers over the long haul, but they facilitate a stable, liquid portfolio that acts as ballast during times of short-term market stress.

Capital Group's multimanager system lets the three named sleeve managers here and an analyst-led research portfolio invest in line with their respective areas of expertise and investment convictions. As PIO and one of the fund's sleeve managers, Vincent Gonzales monitors the overall portfolio's exposures to ensure they align with the fund's guidelines. Gonzales also incorporates feedback from the firm's risk and quantitative solutions team to make necessary adjustments to sleeve allocations when necessary. Capital Group's fixed-income portfolio strategy group provides broad top-down views that help shape the portfolio, while the managers also leverage the firm's interest rates group, along with bottom-up research from a broad analyst pool.

This focus on quality and liquidity results in larger allocations to the highest-rated debt versus most peers. Exposure to bonds rated AA or above has ranged between 62% and 93% of assets over the trailing five years through September 2025, well above that of most rivals. In September 2025, for example, the portfolio's 90% stake in such bonds was more than 50 percentage points higher than the peer median.

The team actively manages duration but stays within 0.5 years of the index. The fund's 2.0-year duration in June 2025 was roughly one-tenth of a year longer than its index but then matched the peer median, in line with what's been the norm for the fund versus peers in recent years.

Sector exposures vary based on where the managers find relative value opportunities. Treasury exposure has averaged 44% of assets over the past five years through June 2025, though the mix has shifted over the past few years. For instance, its Treasury stake fell to 30% of assets as of June 2025 from 50% at year-end 2022 as the managers found attractive value in securitized debt, specifically asset-backed securities, where these stakes rose to 28% from 14% over the same period, and increased agency mortgage-backed securities to 12% from 5%.

The team’s evolving mix of securitized and rates experts strengthens its depth, though it still has more to prove; it earns an Average People rating.

Recent changes have added complementary skillsets to help enhance the strategy’s long-term prospects. Vincent Gonzales, a comanager since 2016, became the fund’s principal investment officer in November 2022; he has nearly two decades of industry experience. Around the same time, securitized specialist Oliver Edmonds, who has 22 years of industry experience, joined the team after managing a sleeve as an undisclosed manager for about two years and contributing as an analyst for one year—both typical practices at Capital Group. Another shift occurred when Tom Hollenberg replaced John Queen on Nov. 1, 2025. Queen, the most tenured of the trio, managed a sleeve for more than a decade and previously served as PIO before Gonzales. Hollenberg, who joined Capital Group in 2016, brings two decades of rates expertise, complementing the securitized debt focus of Gonzales and Edmonds. This specialized expertise could help the team better navigate changing rate environments.

Capital Group’s multimanager system divides assets among three managers and a six-person analyst-led research portfolio. Five analysts specialize in securitized debt, and one specializes in rates. While the group’s collective expertise continues to deepen, the team’s ability to coordinate and translate that expertise into consistent execution remains a work in progress.

Manager ownership, which reflects alignment with investors, is reasonable. Gonzales and Edmonds each have between USD 500,001 and USD 1,000,000, while Hollenberg invests between USD 100,001 and USD 500,000.

Capital Group stands out from the pack as it enhances capabilities around strong core competencies. It earns a High Parent rating.

Since 1931, Capital Group, parent of American Funds, has thoughtfully built out capabilities to become one of the world’s largest asset managers, managing more than USD 3 trillion dollars. Building on the success of its long-term-oriented, multiple-manager system for global equities, the firm has developed robust fixed-income and multi-asset units, each managing more than USD 500 billion. In January 2026, as part of its periodic review of its now five distinct research organizations, Capital Group implemented changes to its equity investment subsidiaries. This exercise resulted in most equity strategies having at least one portfolio manager change, but according to the firm, it better balances each of Capital Group’s three equity groups in terms of investment breadth and helps the firm better align leadership opportunities across the groups. These kinds of shifts have occurred before, with the last coming in 2018.

Capital Group has also turned its attention to some modern opportunities. To address public/private market convergence trends, it launched in April 2025 two semiliquid funds with private market giant KKR. In keeping with its signature portfolio management approach, it splits those funds into multiple sleeves, which are managed independently by distinct managers at each firm. Capital Group plans to deepen this relationship with target-date and model portfolios, as well as public/private equity funds. On the other end of the spectrum, although the firm is firmly dedicated to active management, it has also acknowledged investor preference for passive investing and has thus partnered with indexing stalwarts Vanguard, BlackRock, and Schwab on active/passive models. Capital Group’s proven investment prowess, strong reputation among investors, and scale mean it can be selective with its partnerships.

In addressing another recent trend, since early 2022, the firm has launched more than 25 active exchange-traded funds globally, most of which are distinct, but several are similar to some of its legacy American Funds mutual funds. Unlike some of its peers, though, it has not filed for SEC exemptive relief to offer ETFs as a share class.

That’s a lot of change for such a storied and sizable firm, but Capital Group has a long history of serving investors well.

The fund's high-quality bias has caused long-term results to lag the Bloomberg US Government/ Credit 1-3 Year ex-Baa Index and short-term bond peers.

Since manager Vincent Gonzales took over as the PIO in November 2022, the R6 shares' 4.9% return through October 2025 ranked in the peer group’s bottom decile. Although the fund exhibits lower volatility versus most peers, it has struggled to deliver strong risk-adjusted performance because its returns have been comparatively meager. The fund's annualized information ratio (a measure of excess return over excess standard deviation versus the benchmark) ranked in the bottom quintile of peers over the same period.

The fund's higher credit-quality bias allows it to hold up better than most when markets get rocky. For example, during March 2020's pandemic-driven selloff, the fund’s 0.4% gain outperformed the peer median by about 2.7 percentage points. Additionally, the fund's duration profile helped during rate-driven selloffs. When long-term yields rose during 2022, the duration was among the shortest in the category, which buoyed the fund versus rivals; its 3.5% drop was less severe than the peer median's 4.7% loss and the index's 3.8% decline.

However, this higher-quality tilt also makes it difficult for the fund to outperform its peers and index in typical market conditions. It has struggled to outpace its peers and index in most years since 2019.

American Funds ST Bd Fd of Amer F1's Prospectus Adjusted Expense Ratio is 0.67% per year. It places it in the second-most-expensive quintile of the Morningstar US Fund Short-Term Bond Category, where the median fee is 0.53% per year. This cost positioning translates into a Medalist Rating Price Score of -0.77, which reflects its relative price positioning within the category. The Price Score ranges from -2.50 (most expensive) to +2.50 (cheapest), with higher scores indicating better cost competitiveness.