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Quantitative Finance · शब्दावली

Accrued interest, clean and dirty price क्या है?

अन्य नाम: accrued interest · dirty price · clean price

Definition 3.3 Markets II: Rates, FX and Credit · अध्याय 3 — Government Bonds

Between two coupon dates the seller of a bond has earned part of the next coupon, and the buyer pays it to her: this is accrued interest, $A = \frac{c}{f}\,(1 - w)$ under actual/actual, where $w$ is the fraction of the current period still to run. The dirty price (or full, or invoice price) is what changes hands; the clean price quoted on screens is the dirty price less accrued interest.

A settlement between coupon dates. The seller is paid the fraction 1 - w of the coming coupon as accrued interest; the buyer receives the whole coupon. The street convention discounts each later flow over w, 1 + w, 2 + w, … periods. — Figure 3.1. A settlement between coupon dates. The seller is paid the fraction $1 - w$ of the coming coupon as accrued interest; the buyer receives the whole coupon. The street convention discounts each later flow over $w$ , $1 + w$ , $2 + w$ , … periods.

उदाहरण

Example 3.4 (Forty-one days)

A note paying 4.25% semiannually on 15 February and 15 August settles on 25 September 2026. The current period runs 184 days, of which 41 have elapsed: $A = 2.125 \times 41/184 = 0.473505$ per 100, USD 4 735 per million, USD 47 351 on the trade of the opening paragraph.

Example 3.10 (The ten-year note)

At 4.200% the note of Example 3.4 has a clean price of 100.397405 (100-12+), a dirty price of 100.870911, a Macaulay duration of 8.142 years, a modified duration of 7.975, a DV01 of USD 804 per million and a convexity of 75.8. A 100-basis-point rise costs 7.675 points; duration alone predicts 8.044, duration and convexity together 7.662 (Figure 3.2).

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