What Is USIG? iShares Broad USD Investment Grade Corporate Bond ETF
Last updated July 2026
Short answer
USIG is iShares Broad USD Investment Grade Corporate Bond ETF, an ETF that tracks a US investment-grade corporate bond index at a 0.04% expense ratio. USIG holds US investment-grade corporate bonds, bundled into one ticker. It charges 0.04%. It distributes about 4.72%, and that payout moves with rates rather than being fixed. It launched in 2007.
USIG is issued by iShares and tracks a US investment-grade corporate bond index. It charges a 0.04% expense ratio, holds approximately $17.6B in assets under management, yields about 4.72%, and launched in 2007.
What is USIG?
USIG is iShares Broad USD Investment Grade Corporate Bond ETF, an ETF that tracks a US investment-grade corporate bond index at a 0.04% expense ratio. USIG holds US investment-grade corporate bonds, bundled into one ticker. It charges 0.04%. It distributes about 4.72%, and that payout moves with rates rather than being fixed. It launched in 2007.
USIG is issued by iShares and tracks a US investment-grade corporate bond index, so a single ticker gives you the whole portfolio of underlying holdings weighted by the index's methodology rather than by any active stock-picking.
What does USIG hold?
USIG does not hold a basket of individual stocks. It gets its exposure synthetically, through derivatives such as swaps and futures rather than by owning the underlying shares, so there is no conventional top-10 equity holdings list. See the description above for what USIG actually tracks and how that exposure is built.
How do I invest in USIG?
There are three common ways to get USIG exposure. Buy shares (or fractional shares) of USIG directly at any major broker that lists it. Hold it as a core position and layer more concentrated ideas on top. Or build it into a thematic portfolio in Walnut, so USIG sits alongside other holdings that express the same thesis, with target weights you can rebalance toward. USIG trades like a stock during market hours, so you buy it the same way you would any listed share.
New to buying funds? See how to buy an ETF, step by step.
Is USIG a good buy?
Whether USIG is a good buy depends less on any single call and more on your time horizon and what you already hold: it tracks a US investment-grade corporate bond index, so the real question is whether you want that exposure in your mix and at what weight. We walk through valuation, concentration, and what would have to be true for it to outperform from here in is USIG a buy?
The bottom line on USIG
USIG gives you a US investment-grade corporate bond index exposure in one ticker at a 0.04% expense ratio. Most investors use it as a core holding and layer more concentrated thematic portfolios on top.
More on USIG
Whether USIG is worth buying today depends more on your time horizon and what you already hold than on any single call. We walk through valuation, concentration, and what would have to be true for it to outperform from here in is USIG a buy?
USIG yields 4.72% as of August 2026, paid by passing through the dividends of its underlying holdings. For the payout schedule, history, and how the distributions are taxed, see USIG dividend: yield and schedule.
New to funds like USIG? Start with what an ETF is, then how to buy an ETF, or browse the full guide to ETF investing.
Wondering how USIG fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in USIG with AI
Connect the broker you already use and ask Walnut's AI how USIG fits what you actually hold: what it overlaps with, what it leaves you exposed to, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is USIG's ticker symbol?
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USIG, iShares Broad USD Investment Grade Corporate Bond ETF. Issued by iShares; tracks a US investment-grade corporate bond index. Trades during US market hours, available at every major US brokerage.
What is USIG's expense ratio?
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0.04% as of August 2026.
What are USIG's top holdings?
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Top holdings as of August 2026: and others. See the full holdings table above.
How can I invest in USIG through Walnut?
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Walnut isn't a broker. Connect a brokerage and Walnut sits on top to help you build and track thematic portfolios. USIG can be a constituent alongside individual stocks.
How do I compare USIG to similar ETFs?
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Put a few fields side by side: the expense ratio (fees compound over decades), the index or strategy it tracks, the top holdings and how much they overlap with what you already own, the dividend yield, and the AUM, liquidity, and bid-ask spread that affect trading costs. For index funds, tracking error (how closely it follows its index) and tax efficiency matter too. USIG's figures are above; the full method is in Walnut's guide on how to compare ETFs.
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Walnut is informational, not investment advice. Holdings weights and fund statistics on this page are approximations stamped to August 2026; verify current figures against iShares's fund page or your broker before investing.