TR63

4% Treasury Gilt 2063 · GB00BMF9LF76
From To
Return
+£1.840

14 Oct 2026 → 13 Nov 2026

Start dirty price
£72.263
model £73.222
End dirty price
£74.103
model £75.203
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 +£0.365 The passage of time at an unchanged yield: coupons earned plus the bond getting closer to redemption.
Rolldown -£0.028 The yield change that comes from the shorter remaining maturity — rolling down the same curve.
Variation +£1.644 The move in the curve itself between the two dates.
Unexplained -£0.141 The residual between the traded prices and what carry, rolldown and variation account for.

The curve, then and now

Market data as of 14 Oct 2026 and 13 Nov 2026.
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