CDX vs SPHY

CDXCSimplify High Yield ETF

SPHYAState Street SPDR Portfolio High Yield Bond ETF

In short

CDX Most high yield ETFs buy the bonds. Simplify's CDX rents the exposure through swaps and layers a quality-versus-junk hedge on top. An active, derivatives-first route into junk credit, priced like one.

SPHY State Street's junk-bond workhorse: roughly 1,900 US high yield bonds in one wrapper for 0.05% a year, a fraction of what the typical high yield ETF charges, with income paid monthly.

Stated mandate

CDX Effective September 2, 2025, the fund's stated objective is to maximize total return. Its strategy continues to obtain primarily high-yield bond exposure through swaps and a credit-hedge derivatives approach.

SPHY The fund seeks to track, before fees and expenses, the price and yield performance of the ICE BofA US High Yield Index.

Why people hold it

• CDX Gets its high yield exposure through swaps rather than a warehouse of individual bonds, a structurally different plumbing than the index funds that dominate this category.
• Pairs that exposure with an advertised quality-versus-junk hedge, an attempt to blunt the weakest end of the credit spectrum instead of owning the whole market as-is.
• Pays monthly and spreads exposure across roughly 240 positions, so income arrives on a regular cadence rather than quarterly.
• Running since 2022, it has a real operating history through a full credit cycle rather than a launch-week track record.

• SPHY 0.05% a year against a peer-group median about eight times higher. In high yield, the fee comes straight out of coupon income, so the gap does real work.
• Holds about 1,900 bonds tracking the ICE BofA US High Yield Index, broad enough that no single issuer's trouble dominates the portfolio.ssga.com
• Live since 2012, a multi-billion-dollar fund that trades actively and has stuck tightly to its stated index rather than drifting from the mandate.
• Distributions arrive monthly, in step with how the underlying coupons come in.

Worth knowing

• CDX It charges 0.50%, above the 0.40% typical for high yield ETFs and many multiples of index peers like SCYB and SPHY, which run on a few basis points.
• The hedge sleeve costs something to carry. Derivatives-based credit exposure also behaves differently than a bond portfolio, especially in fast-moving markets.
• The stated objective was reset to maximizing total return in September 2025, so the fund's older record predates its current mandate.

• SPHY This is below-investment-grade credit. Defaults and spread moves drive the price far more than Treasury yields do, and sell-offs in this asset class can be sharp.
• Fees here are already near the floor: SCYB lists 0.03% and HYLB matches at 0.05%, so the cost edge over the strongest peers is narrow.
• Scope is US high yield corporates, full stop. No investment-grade ballast, no emerging market debt, nothing to soften a credit drawdown from inside the fund.ssga.com

Full CDX profile⁠

Full SPHY profile⁠