Michael Green argues that the bond market’s recent behavior is being driven less by fundamentals than by passive/index mechanics, and that this is distorting prices, liquidity, and retirement asset allocation. He sees current 30-year Treasury yields as an unusually attractive income opportunity and says the Treasury could repair parts of the plumbing by reissuing debt in a way that improves bank balance sheets and reduces distortions.
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Michael Green’s core thesis is that passive investing has become large enough to distort price discovery across both equities and fixed income, and that the bond market’s recent move higher in yields is not primarily a verdict on U.S. sovereign credit. He says the market is increasingly a mechanical system governed by index rules, not “the collective wisdom of the crowds,” and that this is why he sees the current 30-year Treasury selloff as a structural mispricing rather than a fundamentals-driven collapse. In his view, the “warning sign” is rising volatility and reduced liquidity, which he believes signal an approach toward an “endgame” in which passive share becomes too large for markets to function normally. A major part of the discussion focused on sovereign debt and retirement income. …
Near term, the most actionable setup is that long-duration Treasuries still offer compelling income, but liquidity and volatility can worsen fast if positioning crowds in or a policy move surprises the market.
Over the next few months, the base case is continued tension between fiscal-fear narratives and mechanically driven bond flows; confirmation would come from persistent weak duration demand and thin Treasury liquidity, while a Treasury-led fix would challenge the bearish plumbing thesis.
Structurally, Green’s view is that passive and index-based allocation have changed the market regime itself: price discovery is weaker, volatility is more likely to rise, and retirement capital keeps being steered into public financial assets at the expense of private enterprise.
Passive investing has become large enough to distort price signals in markets and is now a major driver of current bond behavior.
He repeatedly says prices no longer reflect crowd wisdom but mechanical index effects.
The 30-year Treasury yielding above 5% is an unusually strong retirement-income asset rather than proof of imminent U.S. credit collapse.
He argues it meets retirement obligations and provides 5% income for 30 years.
Global bond markets are showing similar rate selloffs, which suggests a broader mechanical cause rather than a U.S.-specific fiscal problem.
He cites the UK, Australia, and Japan behaving similarly.
What prompted you to write an open letter to the US Treasury Secretary?
Michael Green explains that while his work on passive investing usually focuses on equities, the biggest distortions are now occurring in fixed income, specifically sovereign debt. He notes a puzzling lack of interest in the 30-year bond above 5%, and describes speaking to 500 institutional allocators where not one hand went up when he asked if they had changed their allocations. He argues this is a mechanical byproduct of passive investing indexes allocating more capital to higher-priced bonds, not a market judgment on US creditworthiness.
Are you saying the narrative that investors are voting with their feet on US debt is wrong?
Green agrees that many people believe the narrative about US debt risk, but argues this becomes a function of the market presenting what we think of as truth. He says the price signals from passive investing are not being driven by those factual assertions about US inability to service debt, and that the US can actually afford to service its debt.
Why does the 30-year bond at over 5% meet the needs of retirement?
Green explains that a 5% 30-year bond provides current income in an asset-protected manner — you receive that yield for 30 years and have the principal left over. The historical 4% withdrawal rate from a 401k would be met by that 5% alone without equity risk. He notes the irony that while people say 60/40 is dead (with some advocating 90/10 equity/bond), the expected forward returns on equities are below 2%, making the 5% bond a far more stable and attractive asset.
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