What do you call a bond trader who doesn’t trade bonds? An ETF investor.

Yes, that’s a bad market joke. But it’s also a legitimate issue that debt specialists will be grappling with over the next decade if BlackRock Inc.’s forecast for a seismic shift away from trading individual securities comes true.

The growth in instruments tied to an index -- such as derivatives or exchange-traded funds --- will outpace any gains for bonds, with trading in debt ETFs set to double over the next five years to $15 billion per day, according to strategists at the world’s largest money manager. And with liquidity increasingly following the money into passive strategies, bond traders may have to adapt or perish.

“What has changed is the way that people actually trade,” BlackRock’s head of trading, Richie Prager, said during an interview in New York. “Look what happened in the equity market with all the different equity indices that have been created. Think about applying that to the bond market.”

Crisis Consequence

In Prager’s vision of the future, bond dealers no longer focus on individual securities. Instead they command a dashboard of bonds, credit-default swap indexes, total return swaps, ETFs and derivatives on those ETFs, while their peers across the desk weigh the relative value of these same possible structures. With BlackRock being the largest issuer of ETFs in the U.S. and Europe, the asset-management giant has a substantial stake in seeing this come to pass.

It’s all a long way from when Prager started trading bonds more than three decades ago. Even when the financial crisis hit in 2008, buying and selling debt was an over-the-counter business, driven by dealers taking on risk for a price they negotiated over the phone.

But the wave of regulation that followed the credit crunch ended all that, shrinking banks’ balance sheets and inventories of individual bonds. In the investment-grade bond market, traded volume as a proportion of outstanding bonds has slumped from more than 100 percent to about 65 percent since 2005, according to MarketAxess data quoted in a new report by BlackRock. Meanwhile, the cost of doing deals has jumped, the money manager wrote.

“ETFs have filled that void,” according to Larry Whistler, chief investment officer at Nottingham Advisors and a former bond trader for Merrill Lynch. “We’re able to trade, just in a little bit different fashion, via the ETF versus the individual security,” Whistler said by phone from Buffalo, New York, where he helps oversee more than $1.1 billion using both bonds and ETFs.

Skeptical Eye

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