TS29

4 1/8% Treasury Gilt 2029 · GB00BQC82B83
From To
Return
+£0.472

09 Oct 2026 → 10 Nov 2026

Start dirty price
£98.969
model £99.147
End dirty price
£99.442
model £99.688
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 +£0.388 The passage of time at an unchanged yield: coupons earned plus the bond getting closer to redemption.
Rolldown +£0.023 The yield change that comes from the shorter remaining maturity — rolling down the same curve.
Variation +£0.130 The move in the curve itself between the two dates.
Unexplained -£0.069 The residual between the traded prices and what carry, rolldown and variation account for.

The curve, then and now

Market data as of 09 Oct 2026 and 10 Nov 2026.
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