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It’s not probably the most mainstream matter we cowl, however FT Alphaville Towers is fairly within the bond market affect of ETFs. In spite of everything, it’s changing into a fairly large deal, with one other $120bn of inflows into fastened revenue ETFs already this 12 months.
As Gregory Peters, co-chief funding officer of PGIM Fastened Earnings, instructed FTAV final 12 months, ETFs have “remodeled fastened revenue buying and selling”, due to their underlying tech and rampant development:
As a consequence the liquidity of the bond market has improved fairly considerably. It’s much more environment friendly than what we had earlier than the worldwide monetary disaster, after we merely relied on seller stability sheets. This utilises know-how which can solely get higher, faster, sooner, and stronger. And I feel that’s the transformational a part of the ETF chassis.
Barclays’ “thematic” fastened revenue analysis group is simply as fascinated by the phenomenon as Alphaville, and has been writing up a number of post-fodder analysis over the previous 12 months. The most recent landed in our inbox shortly earlier than the Trump tariff tantrum so we’re solely getting round to writing about it now.
The tl;dr is that passive funds — ETFs and index-tracking mutual funds — now personal nearly a fifth of your complete US funding grade company bond market, and that is beginning to have an effect on how the market trades. Or on this case, when it trades.
There has at all times been a modest soar in company bond buying and selling volumes on the final day of the month, as many massive traders rebalance their portfolios round then. However it has exploded lately due to rising passive funds rejigging their holdings.
Buying and selling volumes in US funding grade company bonds is now on common 82 per cent increased on the final day of the month, in comparison with the up from about 25-30 per cent a decade in the past.

The emergence of a month-end buying and selling spike is primarily pushed by the expansion of passive bond funds. In 2013 they held simply 5 per cent of the US funding grade credit score universe, however in the present day they maintain almost a fifth of the market, in accordance with Barclays.
The bond market footprint of ETFs continues to be a lot smaller than that of index-tracking mutual funds, and Barclays’ report largely offers with passive investing as a complete. However Alphaville is fairly certain that the dominant driver is the expansion of fastened revenue ETFs, given the distinctive liquidity-nurturing traits of their creation-redemption course of.
Apparently, conventional energetic bond funds at the moment are reinforcing this pattern, by doing increasingly of their very own buying and selling on the finish of the month to make the most of the more and more bountiful pool of liquidity.
As Barclays’ Zornitsa Todorova and Andrea Diaz Lafuente level out, passive funds present “predicable, programmatic liquidity” on the finish of each month, which is enticing to everybody:
As a result of trades by passive funds are rule-driven and never discretionary, different market members, reminiscent of mutual funds and hedge funds, can anticipate these liquidity flows and place themselves to use these predictable patterns. Over time, month-end liquidity has turn out to be self-reinforcing: energetic funds anticipate the predictable rebalancing by passive funds at month-end, resulting in elevated participation and buying and selling exercise. As passive funds have expanded their presence within the IG market, market members now anticipate simpler entry to liquidity throughout a wider vary of securities, leading to even bigger month-end liquidity spikes.
Barclays estimates that bid-ask spreads at the moment are about 12 per cent tighter on the ultimate day of the month, and the value affect — measured by the common day by day value change relative to turnover — is 40 per cent decrease.
These metrics are each markedly higher than they had been a decade in the past.


So what does this imply for everybody else? Properly, we’re spitballing right here, but when the “liquidity smirk” in equities is something to go by, it would imply more and more ample liquidity on the finish of the day, and on the ultimate day of the month. Liquidity beget liquidity, in spite of everything.
Nevertheless, that in flip might imply that company bond markets turn out to be a tad extra unstable in additional fallow noon and mid-month intervals, as traders herd the place buying and selling prices are the bottom. Are we seeing any proof of that to this point? Not that we’re conscious of, however maybe some useful analyst might run the numbers.