T29K

4% Treasury Gilt 2029 · GB00BVP99566
From To
Return
+£0.265

14 Oct 2026 → 13 Nov 2026 · includes £2.000 coupon

Start dirty price
£99.417
model £99.627
End dirty price
£97.682
model £98.012
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 +£0.418 The passage of time at an unchanged yield: coupons earned plus the bond getting closer to redemption.
Rolldown +£0.021 The yield change that comes from the shorter remaining maturity — rolling down the same curve.
Variation -£0.054 The move in the curve itself between the two dates.
Unexplained -£0.120 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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