TG65

2½% Treasury Gilt 2065 · GB00BYYMZX75
From To
Return
+£2.861

12 Oct 2026 → 12 Nov 2026

Start dirty price
£49.954
model £50.573
End dirty price
£52.814
model £53.240
Mark-to-market is the traded price; mark-to-model discounts the remaining flows along the fitted curve. The decomposition below is computed on the model prices.

What moved the price

Effect Contribution What it is
Carry +£0.243 The passage of time at an unchanged yield: coupons earned plus the bond getting closer to redemption.
Rolldown -£0.024 The yield change that comes from the shorter remaining maturity — rolling down the same curve.
Variation +£2.448 The move in the curve itself between the two dates.
Unexplained +£0.194 The residual between the traded prices and what carry, rolldown and variation account for.

The curve, then and now

Market data as of 12 Oct 2026 and 12 Nov 2026.
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