Streetwise Professor

The Fed and the SEC have expressed concerns about Treasury “basis trades” wherein a firm purchases a cash Treasury security funded by repo-ing it out and sells Treasury futures. Their concern is somewhat justified. As mentioned in the linked article, and analyzed in detail in my paper in the Journal of Applied Corporate Finance (“Apocalypse Averted“) the spike in the cash-futures Treasury basis caused by COVID (or more accurately, the policy response to COVID) caused a liquidity crisis. The sharp basis change led to big margin calls (thereby creating a demand for liquidity) and also set off a feedback loop: the unwinding of positions exacerbated the basis shock, and thereby reinforced the liquidity shock.

This is just an example of the inherent systemic risk created by margining, collateralization, and leverage. The issue is not a particular trade per se–it is an inherent feature of a large swathe of trades and instruments. What made the basis trade a big issue in March 2020 was its magnitude. And per the article, it has become big again.

This is not a surprise. Treasuries are a big market, and leveraging a small arb pickup is what hedge funds and other speculators do. It is a picking-up-nickels-in-front-of-a-steamroller kind of trade. It’s usually modestly profitable, but when it goes bad, it goes really bad.

All that said, the article is full of typical harum-scarum. It says the trade is “opaque and risky.” I just discussed the risks, and its not particularly opaque. That is, the “shadowy” of the title is an exaggeration. It has been a well-known part of the Treasury market since Treasury futures were born. Hell, there’s a book about it: first edition in 1989.

Although GiGi is not wrong that basis trades can pose a systemic risk, he too engages in harum-scarum, and flogs his usual nostrums–which ironically could make the situation worse:

“There’s a risk in our capital markets today about the availability of relatively low margin — or even zero margin — funding to large, macro hedge funds,” said Gensler, in response to a Bloomberg News inquiry about the rise of the investing style.

Zero margin? Really? Is there anyone–especially a hedge fund–that can repo Treasuries with zero haircut? (A haircut–borrowing say $99 on $100 in collateral is effectively margin). And how exactly do you trade Treasury futures without a margin?

As for nostrums, “The SEC has been seeking to push more hedge-fund Treasury trades into central clearinghouses.” Er, that would exacerbate the problem, not mitigate it.

Recall that it was the increase in margins and variation margins on Treasury futures, and the increased haircuts on Treasuries, that generated the liquidity shock that the Fed addressed by a massive increase in liquidity supply–the overhang of which lasted beyond the immediate crisis and laid the groundwork for both the inflationary surge and the problems at banks like SVB.

Central clearing of cash Treasuries layers on another potential source of liquidity demand–and liquidity demand shocks. That increases the potential for systemic shocks, rather than reduces it.

In other words, even after all these years, GiGi hasn’t grasped the systemic risks inherent in clearing, and still sees it as a systemic risk panacea.

In other words, even though I agree with Gensler (and the Fed) that basis trades are a source of systemic risk that warrant watching, I disagree enough with GiGi on this issue that the apocalypse that could result from our complete agreement on anything will be averted–without the intervention of the Fed.