PRAB vs SECU

PRABCState Street IG Public & Private ABS ETF

SECUCiShares Securitized Income Active ETF

In short

PRAB An active bond fund that shops both sides of the securitized market: publicly traded asset-backed bonds plus privately negotiated deals, inside a daily-traded ETF. State Street's push to put private credit in a 1940 Act wrapper.

SECU A 2005-vintage BlackRock mortgage-bond strategy that moved into an ETF wrapper in January 2026: active, roughly 900 securitized bonds deep, at 0.41% with no waiver due to expire.

Stated mandate

PRAB The fund is actively managed and primarily invests in investment-grade asset-backed securities, including public and private ABS, collateralized loan obligations, and residential and commercial mortgage-backed securities. It seeks to maximize risk-adjusted returns while providing current income.

SECU The Fund seeks high total return through active management of a diversified portfolio of securitized fixed-income assets.

Why people hold it

• PRAB Casts a wide net across securitized credit: public and private ABS, CLOs, and residential and commercial mortgage bonds, all investment grade.ssga.com
• Actively managed, not index-tracking. The mandate is risk-adjusted return plus current income, so the team can shift between collateral types.
• Costs 0.39% a year, a hair under the bond peer median and under active securitized rival SECU at 0.40%.
• Pays income quarterly from a compact book, on the order of 70 positions.

• SECU Rare pedigree: the strategy launched as a BlackRock mutual fund on July 29, 2005 and was reorganized into this ETF on January 23, 2026, so the research desk predates the ticker.sec.govblackrock.com
• Wide net: roughly 900 positions spanning asset-backed bonds, agency and non-agency mortgage paper, CLOs and CMOs, up and down the capital structure.sec.gov
• The 0.41% fee is the whole story: gross equals net, no waiver propping it up, and it sits near the median for funds in the securitized bond group.
• Active mandate, no index leash. Managers can hold investment grade or high yield at any maturity, with at least 80% of assets in securitized exposure.sec.gov

Worth knowing

• PRAB The private sleeve is the point and the trade-off: privately placed deals change hands less freely than public bonds and lean more on manager valuation.ssga.com
• A 2026 launch, so there is no long record showing how the strategy handles a credit squeeze.
• Still building an audience. Lighter volume in a fund this young tends to show up as wider bid/ask spreads.

• SECU At least 25% of total assets sits in non-agency mortgage bonds, which carry no US government backing. Credit and prepayment swings come attached to the income.sec.gov
• Cheaper doors exist in the same category: Principal's WDE charges 0.19% and Nuveen's NSCI 0.38%, neither relying on a waiver.
• The wrapper is young even if the strategy isn't, so exchange-traded history on spreads and volatility is thin next to the predecessor fund's record.sec.gov

Full PRAB profile⁠

Full SECU profile⁠