This is an active bond ETF that uses the US aggregate bond index as a performance benchmark but does not replicate it. Instead, portfolio managers adjust sectors and maturities at their own discretion. It holds Treasuries, mortgage-backed securities, corporate bonds and emerging market bonds together.

It suits investors who want more active sector allocation than a simple index-tracking bond ETF offers and who value a monthly distribution cash flow.

It is an ETF managed actively (with discretionary management) by State Street.

Most of its net assets are invested in bonds regardless of credit rating, while high-yield corporate bonds and foreign-currency-denominated bonds are held only within set limits. By shifting duration and sector weights based on its views on interest rate direction and credit spreads, the fund aims to outperform the aggregate bond index.

• A delegated structure in which DoubleLine handles sub-advisory management
• A broad investment range, from Treasuries to emerging market bonds
• Frequent cash flow thanks to monthly distributions

Assets under management (AUM) stand at $3.7B, and the total expense ratio (Expense Ratio) is 0.55% per year.

The fee burden is higher than that of index-tracking bond ETFs, but in exchange the fund tries to differentiate itself through sector allocation.

Bond prices have been pressured during periods of rising interest rates, and the weak price performance seen across bond ETFs has continued. However, higher coupon rates have thickened the source of distributions, and phases in which price changes and interest income offset each other keep recurring.

Bond ETF inflows tend to grow when expectations of rate cuts revive, and to shift toward short-term bonds when inflation data turns shaky. The active bond product category is smaller than the index-based category, but demand from investors who want allocation discretion remains steady.

Its strengths are broad bond sector allocation and monthly distributions, while its weaknesses are higher fees than index-based funds and its reliance on managers' judgment.

IUSB and JCPB, shown in the table, are core products that broadly hold US aggregate bonds, with relatively light fee burdens and large asset bases. BINC ETF and PYLD belong to the same active multi-sector bond family, so they are close in character in terms of allocation discretion, while BNDX ETF is an option that broadens exposure to overseas bonds. If you want an index-based core, you can look at AGG or BND, and to narrow the focus to corporate or high-yield bonds, you could compare LQD or HYG, among others.

These are the items to check before investing in this ETF. An active bond product reveals its character only when you look at three things together: fee level, interest rate sensitivity and credit composition. It is also wise to decide in advance how it will share roles with an index-based core holding.

When rates are rising, price declines offset distribution income. The weight in high-yield and emerging market bonds can lead to losses from spread widening during economic slowdowns, and foreign-currency-denominated bonds also carry exchange rate risk.

A sensible setup is to build the bond core with index-based funds and allocate only a portion to active allocation. If cost is your priority, consider an index-based core product; if you want discretion in sector allocation, consider this ETF.