JPMorgan believes that when it comes to fixed income, active outperforms passive. The bank believes that the benchmark, the Bloomberg US Aggregate Index (AGG), is fundamentally flawed due to an antiquated design. It doesn’t provide sufficient diversification as it only captures just over half of the bond market. This is in contrast to equities, where passive indexes reflect a much larger share of the total market.  

This is because the benchmark was created in the 1980s where fixed income was dominated by Treasuries, agency mortgage-backed securities, and investment-grade corporate bonds. Now, there are many more types of fixed income securities that are not represented in the AGG. This also means more opportunities for active fixed income managers to outperform. 

Another fundamental flaw of the AGG is that borrowers with the most debt have the most weight. This means that passive fixed income investors have the most exposure to the companies with the most debt. In contrast, active managers can weigh their portfolios by factors that are more meaningful and relevant to long-term outperformance. 

JPMorgan’s active funds differ from the benchmark. Instead of short-duration Treasuries, it allocates more to short-duration, high-quality asset-backed securities as these have outperformed in 12 of the last 13 years. The bank also eschews securities that the benchmark is forced to own such as low-coupon MBS. In terms of corporate bonds, JPMorgan’s active funds prioritize quality. This is in contrast to AGG as 42% of its corporate bond holdings are rated BBB. 

Finsum: JPMorgan makes the case for why investors should choose active fixed income. It identifies a couple of fundamental flaws in the construction of the Bloomberg US Aggregate Bond Index.