Rathbones Cut Gilt Exposure in Case Burnham ‘Does a Truss’

Rathbones Asset Management cut its UK government bond (gilt) exposure, selling long-dated gilts across a £9.8B portfolio of cross-asset funds, citing risk of a selloff if Andy Burnham boosts spending and raises borrowing. The manager said it is reducing holdings to protect against “fiscal irresponsibility,” amid uncertainty around the next Chancellor decision. This is likely to pressure long-end gilt yields and reflects a cautious positioning shift toward UK sovereign risk.

Analysis

This is less about one manager’s positioning and more about the market’s willingness to fund the UK’s long-end duration at the margin. When confidence in fiscal discipline slips, the 30-year point tends to absorb the shock first, steepening the curve even if the BoE keeps the front end anchored; that is the mechanism that matters for mortgage hedging, swap spreads, and duration-sensitive equity valuations.

The immediate winners are typically UK lenders with large retail deposit bases if the curve steepens in an orderly way: higher long yields can widen NIMs faster than funding costs reprice. The real losers are the assets that live on cheap duration—UK REITs, infrastructure funds, utilities, and highly levered midcaps—because a higher term premium raises refinancing costs and compresses the equity risk premium, which can trigger multiple compression over the next 1-3 months.

The contrarian risk is that this becomes another crowded “post-Truss” trade that overshoots before any actual fiscal decision is made. If the eventual Chancellor signals restraint, or if pension/LDI demand absorbs issuance, long gilts can rally hard as shorts cover; the key falsifier is a failure of 10s/30s steepening or GBP weakness after concrete budget signals. Watch auction cover and sterling first; those will tell you whether this is a real regime shift or just precautionary de-risking.

Key Decisions for Investors

• Tactically short long-dated UK gilts via IGLT.L or gilt futures for 1-4 weeks; best risk/reward if 30-year yields gap higher on any pro-spending signal. Invalidate if the market shrugs off the first fiscal announcement and the long end fails to cheapen.
• Pair trade: long LLOY.L or NWG.L vs short IGLT.L over 1-3 months. This expresses curve steepening with less outright rate risk; it works if higher term premium lifts bank NIMs faster than credit concerns deteriorate.
• Buy GBP downside via FXB put spreads for 1-2 months. Fiscal credibility shocks usually hit sterling before domestic growth data, but cut size if the next fiscal commentary is explicitly orthodox.
• Underweight or short UK rate-sensitive property proxies such as LAND.L and BLND.L over 3-6 months. The thesis is not a macro crash; it is a higher cost of capital and weaker refinancing economics that can pressure NAV discounts and dividend sustainability.