giltsyield.com

Return

-£0.546

04 Sep 2026 → 06 Oct 2026

Start dirty price

£50.639

model £51.075

End dirty price

£50.093

model £50.690

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	+£0.234	The passage of time at an unchanged yield: coupons earned plus the bond getting closer to redemption.
Rolldown	-£0.020	The yield change that comes from the shorter remaining maturity — rolling down the same curve.
Variation	-£0.599	The move in the curve itself between the two dates.
Unexplained	-£0.161	The residual between the traded prices and what carry, rolldown and variation account for.

The curve, then and now

Market data as of 04 Sep 2026 and 06 Oct 2026.

TG65

What moved the price

The curve, then and now

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