iShares ESG Aware 1-5 Year USD Corporate Bond ETF

The iShares ESG Aware 1-5 Year USD Corporate Bond ETF (SUSB) holds investment-grade corporate bonds that mature in one to five years. It tracks a Bloomberg index that screens out some industries and leans toward companies with stronger MSCI ESG (environmental, social and governance) ratings. The main trade-off is cost. Its 0.12% expense ratio is three to four times what IGSB (0.04%) and VCSH (0.03%) charge for similar short-term corporate bonds without the ESG filter.

• Over the year to Oct 27, 2026, SUSB returned +1.3%, 5th of 8 among similar funds.
• Its 5-year annualized return was +2.3%.
• In the 2020 COVID crash it fell 13.2% and regained its old high 2.2 months after the low.
• Its worst full calendar year was 2022 (-5.7%); its best was 2019 (+7.0%).
• The deepest fall in its price history was 13.2% (Mar 4, 2020 to Mar 19, 2020), recovered by May 26, 2020.

As of Aug 31, 2026, the fund held 1,623 securities; the ten largest made up 3.88% of assets, and 4.9% sat in cash and money-market holdings.

The bonds mature in 3.6 years on average (weighted by size), with an average coupon of 4.15%.

• Over the three months to Aug 31, 2026, investors added a net $113.5M (creations minus redemptions, per the N-PORT report).
• Monthly total returns reported for that quarter: +0.15%, -0.13%, +0.26%.

SUSB is an index fund: it aims to match its benchmark, not beat it. That benchmark is the Bloomberg MSCI US Corporate 1-5 Year ESG Focus Index, built from a parent index, the Bloomberg US Corporate 1-5 Years Index. The parent covers investment-grade (rated as likely to repay), fixed-rate, taxable corporate bonds issued in US dollars and maturing in one to five years.

Bloomberg then applies ESG (environmental, social and governance) screens using MSCI ratings. It removes companies involved in tobacco, controversial weapons or civilian firearms, plus those whose thermal coal or oil sands activity exceeds revenue limits. It also removes companies in very severe controversies or without an MSCI rating. A mathematical model then tilts weights toward companies with better ESG ratings, requiring an ESG score at least 10% above the parent's while keeping risk and return similar.

Bloomberg updates the index on the last business day of each month. BlackRock uses representative sampling: rather than buying every bond, it holds a subset resembling the index on duration (sensitivity to interest rates), credit quality and yield, with at least 80% of assets in index bonds. As of August 31, 2026, the fund held 1,625 positions and no derivatives; the 10 largest, led by a Cheniere Energy bond at 0.55%, totaled 3.88% of assets.

• SUSB charges 0.12% a year, versus an average of 0.13% for the similar funds below (6th of 8, cheapest first).
• Using the prospectus's standard example, $10,000 invested would cost about $12 in the first year and $154 over 10 years (assuming a 5% annual return).

Its short-term, investment-grade bonds have historically moved far less than stocks, with three-year volatility of 2.4% as of October 27, 2026.

SUSB launched in 2017, so it has no record from the 2008 financial crisis. Its deepest drop came in the 2020 COVID crash, when it fell 13.2% between March 4 and March 19, 2020. It recovered by May 26, 2020. The 2022 rate-driven bear market was slower to heal: the fund fell 7.9% from peak to low and took about 15 months to recover, until late December 2023. Its worst calendar year was 2022, at -5.84%. A retiree who had to sell shares that year would have locked in a loss.

For income, the trailing 12-month yield was 4.62% as of October 27, 2026, paid monthly. Costs are modest: $12 in the first year on $10,000 under the SEC's standard example. Similar non-ESG funds cost less. Past results don't predict future returns, and any plan should look at the whole portfolio, not one fund.

Matched by bond funds with the closest average maturity and issuer mix (N-PORT).