Nash Bets on Bond Curve Flattening as Sovereign Risk Cools
Jupiter Asset Management’s Mark Nash sees the recent surge in long-term bond yields as an overreaction to sovereign debt fears, favoring trades that profit from falling long-end yields.
The yield gap between two-year and 30-year German bonds reached its tightest level since early 2025. This shift signals a market re-pricing of sovereign risk rather than a permanent steepening of the curve. Mark Nash, who manages £74 billion at Jupiter Asset Management, states that the recent blowout in term premiums is overdone. He argues that sovereign risk is declining, not rising, contrary to prevailing market sentiment.
Nash favors curve-flattener positions, which bet that long-term yields will fall relative to short-term rates. This stance contradicts the view that high public borrowing will permanently push up long-term funding costs. He notes that curves have been flattening for much of the year, a pattern he interprets as evidence of strong growth rather than economic weakness. His strategy relies on the compression of term premiums in Europe, Britain, and Japan.
European central banks drive tightening expectations
The primary driver for Nash’s trades is the anticipated tightening by the European Central Bank, the Bank of England, and the Bank of Japan. He holds more 30-year bonds than two-year paper in these regions, expecting front-end yields to rise. Swaps indicate traders expect three more 25-basis-point hikes from the ECB over the next year. This policy path supports the flattening trade by lifting short-term rates while keeping long-term yields contained.
Jupiter views Europe, Britain, and Japan as further along in fiscal reform compared to the United States. Nash anticipates solid growth will curb borrowing and stabilize debt ratios in these regions. This structural improvement supports his view that term premiums should compress. The manager remains cautious about how far these positions have already run, noting the risk of overextension in the market.
US strategy reflects policy uncertainty
Nash reduced his US Treasury flattener trade in late July and has not adjusted it since. He sees little political appetite in Washington to address the $40 trillion debt burden. The US Treasury announced buybacks of up to $6 billion in longer-dated Treasuries this week, triple the previous month’s amount. This move aims to ease borrowing costs but does not change the underlying policy constraints.
Nash describes the Federal Reserve as more reactive than proactive, a stance that could delay the downshift in term premiums. He warns that an energy spike, with oil above $100, could force central banks to pause hikes to protect growth. Such a scenario would undermine the logic behind the flattening trade. The direction of term premiums will determine bond returns in the coming months.
Sovereign risk fears prove misplaced
GN auto markets/bonds: sovereign debt data shows the German yield gap tightening as traders ramp up ECB hike bets. A German yield hit a 17-year high, yet the curve remains flat. This divergence suggests the market is pricing in policy tightening rather than fiscal distress. Nash’s position reflects a belief that the current bond selloff is a temporary overshoot.
Investors should watch growth data, policy paths in Europe, the UK, and Japan, and energy prices. These factors will tug at the long end of the curve. The resolution of sovereign risk concerns will set the tone for fixed income returns. The market’s current focus on short-term policy moves may obscure the longer-term structural improvements in European debt sustainability.
