In a day of mixed signals, UK gilt yields edged higher as the latest inflation data reinforced expectations of a sustained rate hike cycle. The 10‑year yield moved to 4.12% from 4.05% in the morning, reflecting market pricing of a 75‑basis‑point hike over the next two years. Meanwhile, the UK government’s approval of the Jackdaw gasfield in the North Sea added a new layer of supply‑side uncertainty, pushing duration risk to a new peak.
Gilt Duration Tightens Amid Inflation and Gasfield Approval
The overnight spike in UK inflation to 3.5% in September, the highest in a decade, has reignited concerns that the Bank of England may need to keep rates elevated longer than the market had anticipated. With the market now pricing a 75‑basis‑point lift in the next 18 months, the duration of the gilt basket shrank from a 12‑year average to roughly 9.7 years. The Jackdaw gasfield approval—while a boost for the UK energy sector—has also injected a new supply dynamic, as investors worry that the project could raise the country’s future debt load, further compressing duration.
Gilt spreads to US Treasuries widened to 110 basis points, the widest since mid‑2025, reflecting a shift in risk appetite. Traders noted that the duration squeeze has left fewer long‑dated gilts in the market, making the existing supply more sensitive to price swings. The result: a more volatile market for both institutional and retail investors seeking safe‑haven exposure.
Sterling Funding Amid US Market Volatility
While the gilt market was in turmoil, sterling funding spreads tightened as banks sought liquidity in a tighter funding environment. Overnight, the 3‑month sterling LIBOR slipped to 1.27%, down from 1.31% earlier in the day, as investors chased lower funding costs. However, the overnight repo rate on sterling remained near 1.30%, indicating that the tightening in the gilt market had not fully translated into the broader funding market.
US cash and futures markets were also active, with the Fed’s minutes suggesting a cautious approach to further rate hikes. The SEC’s recent updates on regulatory compliance for new fintech products added a layer of uncertainty, prompting traders to hedge against potential volatility in the US dollar. As a result, the sterling currency saw a modest appreciation, trading at $1.24 against the dollar, a level that has not been seen since early 2025.
In summary, the interplay between UK inflation, the Jackdaw gasfield approval, and a tightening gilt duration has created a challenging environment for sterling funding. Meanwhile, US market participants remain vigilant, balancing the potential for further Fed tightening with regulatory updates. Investors are advised to monitor gilt duration metrics closely and adjust sterling funding strategies accordingly as the market evolves.