SPBO vs VTC

SPBOAState Street SPDR Portfolio Corporate Bond ETF

VTCAVanguard Total Corporate Bond ETF

In short

SPBO The whole investment-grade corporate bond market in one ticker for three basis points. Most rivals sell you a maturity slice; SPBO owns the lot, and it undercuts other funds tracking the very same Bloomberg index.

VTC Most cheap corporate bond funds sell you one slice of the maturity curve. VTC buys the whole investment-grade corporate market, short to long, for 0.03% a year, and since 2025 it owns the bonds directly instead of stacking three Vanguard funds.

Stated mandate

SPBO The fund seeks investment results that generally correspond, before fees and expenses, to the price and yield performance of the Bloomberg U.S. Corporate Bond Index.

VTC The Fund seeks to track a broad, market-weighted corporate bond index, specifically the Bloomberg U.S. Corporate Bond Index. It uses an indexing approach focused on investment-grade, fixed-rate, taxable corporate bonds.

Why people hold it

• SPBO 0.03% a year against a category median of 0.19%. In bond land, where the yield does the heavy lifting, that fee gap is not a rounding error.
• Thousands of corporate bonds across the full maturity range, so you hold the broad IG corporate market instead of one duration bucket.ssga.com
• Same index, very different tolls: KORP charges 0.29%, JLQD 0.35%, JHCB 0.53%. SPBO sits at the cheap end of that list.
• Running since 2011, pays monthly, and tracks its benchmark about as closely as anything in the investment-grade corporate group.

• VTC 0.03% a year against a 0.19% median for investment-grade corporate ETFs. On this exact Bloomberg index, nothing in the group charges less.
• One ticker, the full corporate curve. Top-graded rivals like VCIT, IGIB and IGSB each buy a single maturity band; VTC's index spans short, intermediate and long fixed-rate corporates.
• No overlays, no active tilts, no credit guesswork. Market-weighted indexing of investment-grade, fixed-rate, taxable corporates, and the portfolio hews tightly to that mandate.
• Income lands monthly, not quarterly, which matters if bond coupons are doing real work in your cash flow.

Worth knowing

• SPBO Full maturity range means long-dated paper is in the mix, so the price moves more when rates move than short-maturity peers like IGSB or SPIB.
• Corporate credit only. No Treasuries or mortgages to lean on, so the fund rides the health of corporate borrowers as well as the rate cycle.ssga.com
• Investment grade by design, US issuers only. No high-yield or emerging-market bonds in the basket.

• VTC Whole-curve means long bonds in the mix, so prices move more with interest rates than a 1-5 year slice like IGSB does.
• The plumbing changed in March 2025: Vanguard moved it from holding three underlying corporate bond ETFs to buying the index bonds directly. Same objective, same index.sec.gov
• Moderately traded rather than a volume heavyweight, so spreads can run wider than the busiest corporate bond funds, particularly in choppy markets.

Full SPBO profile⁠

Full VTC profile⁠