In Credit Research, Indexes Equal Opportunity

Next month, more than 1,000 bonds worth over $300 billion will vanish from the Bloomberg Barclays U.S. Aggregate Index.

Their disappearance reflects market dynamics that tend to benefit active fixed income managers with robust research processes while putting passive investment managers at a disadvantage.

Passive managers who track the bond benchmark will have to sell these bonds when the issuer disappears from the benchmark – even though their fundamental value may not immediately change. Selling, of course, tends to depress prices. And this can create opportunities for active investment managers to potentially buy at more attractive prices.

These securities will exit the index because of a rule change: From 1 April 2017, Treasury, government-related and corporate bonds will need a minimum outstanding market value of $300 million, up from $250 million, to be included in the index. The fundamental value of these bonds may not change, but passive, rules-based investors will be forced to sell without regard to fundamentals.

Index ins and outs

A similar scenario unfolded about a year ago when plunging prices for oil and other commodities prompted ratings agencies to downgrade to junk more than $100 billion worth of bonds issued by natural resource producers.

Bonds of copper mining giant Freeport-McMoRan Inc. (FCX), for instance, were downgraded to junk in January and February of 2016. The bonds quickly recovered, and became nearly 1% of the high yield market.