CORP vs USIG

CORPBPIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund

USIGAiShares Broad USD Investment Grade Corporate Bond ETF

In short

CORP PIMCO is famous for active bond management. CORP is the opposite: since 2010 it has simply followed the ICE BofA US Corporate Index across roughly 1,400 investment grade corporate bonds, paying income monthly.

USIG Most investment-grade corporate bond funds hand you one slice of the maturity curve. USIG takes the whole thing, thousands of US dollar corporate bonds from short-dated to long, for four basis points a year.

Stated mandate

CORP The Fund seeks total return that closely follows the ICE BofA US Corporate Index before fees and expenses, normally investing at least 80% of assets in the index's component securities.

USIG The fund seeks to track an index of U.S. dollar-denominated investment-grade corporate bonds.

Why people hold it

• CORP Narrow mandate, honored: at least 80% of assets in components of the ICE BofA US Corporate Index, and it has tracked that benchmark closely.
• Whole-market credit exposure, roughly 1,400 bonds across the maturity curve, while highly ranked peers like IGSB and IGIB carve off a single maturity band.
• Trading since 2010, a billion-dollar-plus fund that distributes monthly inside a standard 1940 Act ETF wrapper.

• USIG Costs 0.04% a year, against a category median near 0.19%. CORP, which tracks the same ICE BofA US Corporate Index, charges 0.41%.
• One ticker, the full USD investment-grade corporate curve: thousands of bonds, short to long. Slice funds like IGSB (1-5 year) and IGIB (5-10 year) each cover one segment.ishares.com
• Running since 2007, it has tracked its index with very little drift and is one of the more actively traded funds in its category.
• Interest lands monthly, and this is a multi-billion-dollar fund that ranks among the strongest implementations in its peer group.

Worth knowing

• CORP Price is the trade-off: 0.41% a year against a 0.19% cohort median, and USIG follows the same index for 0.04%.
• Moderately traded rather than a volume leader, so spreads can widen in choppy markets. Limit orders are the usual tool.
• Full maturity range means more interest-rate sensitivity than short-duration corporate peers such as IGSB.

• USIG Owning the whole curve means long-dated bonds ride along, so the price swings more when rates move than a short-maturity slice such as IGSB.
• This is corporate credit, not Treasuries. Investment grade at purchase, but prices can fall when spreads widen or an issuer is downgraded.ishares.com
• VCIT edges it on fee at 0.03%, though that fund stays in intermediate maturities rather than the full curve.

Full CORP profile⁠

Full USIG profile⁠