Former Treasury Official Warns Americans Need To Worry About Not Just About Soaring US Debt, But Also About Who Is Buying It: Report

JPMorgan managing director Geng Ngarmboonanant warns that the changing profile of U.S. Treasury holders — foreign governments now owning under 15% of the market (down from over 40% in the early 2010s) while the Fed has cut roughly $1.5 trillion of holdings — has contributed to higher and more volatile interest rates as private investors and hedge funds expand their footprint. With the national debt topping $38 trillion and interest payments now exceeding defense spending, the shift in holders and profit-driven private demand raises fiscal and financial-stability risks, even as long-term yields have so far remained contained and bond vigilantes have not targeted the U.S.

Analysis

Market structure is shifting from patient, strategic buyers (foreign sovereigns, Fed) to nimble, profit-seeking private holders and hedge funds; expect higher intra-auction volatility and quicker directional re-pricing of Treasury yields. That raises term-premia and benefits instruments that reprice to floating rates while penalizing long-duration sovereign and credit exposures; mortgage borrowers and rate-sensitive real assets will see pressure within 1–12 months.

Tail risks include a sudden stop in foreign Treasury demand, a forced deleveraging by leveraged funds, or a regulatory clampdown that could spike yields 100–300bps in a concentrated window—events with outsized system risk. Near-term (days-weeks) the biggest drivers will be auction coverage and Fed balance-sheet headlines; medium-term (3–12 months) is fiscal issuance cadence; long-term (years) is structural higher interest expense crowding out fiscal policy and pushing neutral rates higher.

Trade implications: prioritize short-duration/floating-rate liquidity, buy convexity protection on long-duration Treasuries, and selectively overweight large, well-capitalized banks that can monetize higher NII. Size positions around 0.5–3% NAV per idea given event risk; use options or spreads for convexity to limit premium spend and exploit episodic volatility.

Contrarian view: consensus assumes steady foreign passivity and tame yields—this underestimates private holder concentration risk and potential for episodic selloffs, meaning long-duration Treasuries may be mispriced on systemic tail risk. History (1994/2013 selloffs) shows policy and forced deleveraging amplify moves; therefore passive buy-and-hold on long-duration Treasuries is likely underpriced for risk over 12–36 months.

Key Decisions for Investors

• Allocate 2–3% NAV to short-duration/floating-rate instruments: buy FLOT (iShares Floating Rate Note ETF) and VGSH (Vanguard Short-Term Treasury ETF) split ~60/40; rebalance if 3-month T-bill yield falls >75bps from current levels or rises >100bps in 90 days.
• Establish 0.5–1.0% NAV tail-hedge: buy 3-month TLT (iShares 20+ Year Treasury) put spread (buy 2.5% OTM, sell 1.0% OTM) sized to cap cost; use if 10-year yield moves up >75bps in 30 days.
• Go long 1–2% NAV in large-cap banks (JPM, BAC equally weighted) and hedge via a 0.5% NAV short in mortgage REITs (NLY) for 3–12 months—expect NII upside to outpace credit losses but cut bank longs if net charge-off guidance deteriorates by >50bps QoQ.
• Reduce/underweight cyclical housing exposure by 50% vs benchmark: trim homebuilders (PHM) and mortgage originator exposure, and consider short pairs (short PHM 0.5% NAV vs long VGSH 0.5% NAV) until 30-year mortgage rate falls back below 5.5% or housing starts rebound >10% YoY.
• Set monitoring triggers (action within 30–60 days): accelerate defensive trades if monthly TIC data shows foreign Treasury holdings <13% or if Fed balance sheet declines another ~$500B — these thresholds should prompt increasing duration hedges and reducing levered credit exposure.