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WP 2006-15 Gerlinde Viktoria Stenghele.pdf - IDHEAP

WP 2006-15 Gerlinde Viktoria Stenghele.pdf - IDHEAP

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Annexe 1 : Détail du calcul de la duration présenté au point 5.4.1 (partie 1)<br />

Debt portfolio of Canton A on 1 January Fixed rate financing Floating rate financing Total portfolio<br />

4 years 4 years<br />

Coupon 5.00% Libor 6 months<br />

Interest rate = yield to maturity 5.00% Libor 6 months<br />

Par value 750'000'000 250'000'000 1'000'000'000<br />

Fixed rate portion<br />

Time of payment 1 2 3 4 Total portfolio<br />

Cash flow in current value 37'500'000 37'500'000 37'500'000 787'500'000 900'000'000<br />

Interest rate 5.00% 5.00% 5.00% 5.00%<br />

Discount rate 0.9524 0.9070 0.8638 0.8227<br />

Cash flow in present value 35'714'286 34'013'605 32'393'910 647'878'199 750'000'000<br />

Floating rate portion<br />

Time of payment 1 2 3 4<br />

Cash flow in current value 6'250'000 6'625'000 6'875'000 257'125'000 276'875'000<br />

Interest rate 2.50% 2.65% 2.75% 2.85%<br />

Discount rate 0.9756 0.9490 0.9218 0.8937<br />

Cash flow in present value 6'097'561 6'287'355 6'337'635 229'787'881 248'510'432<br />

Total cash flow in present value 41'811'847 40'300'960 38'731'545 877'666'080 998'510'432<br />

Share of cash flow in present value (fixed rate portion) 0.0358 0.0341 0.0324 0.6488 0.7511<br />

Weighted time of payment 0.0358 0.0681 0.0973 2.5954 2.7966<br />

Share of cash flow in present value (floating rate portion) 0.0061 0.0063 0.0063 0.2301 0.2489<br />

Weighted time of payment 0.0061 0.0126 0.0190 0.9205 0.9583<br />

Total portfolio duration (Dmac) 3.7549<br />

Debt portfolio of Canton B on 1 January Fixed rate financing Floating rate financing Total portfolio<br />

4 years 6 months<br />

Coupon 5.00% Libor 6 months<br />

Interest rate = yield to maturity 5.00% Libor 6 months<br />

Par value 750'000'000 250'000'000 1'000'000'000<br />

Fixed rate portion<br />

Time of payment 1 2 3 4 Total portfolio<br />

Cash flow in current value 37'500'000 37'500'000 37'500'000 787'500'000 900'000'000<br />

Interest rate 5.00% 5.00% 5.00% 5.00%<br />

Discount rate 0.9524 0.9070 0.8638 0.8227<br />

Cash flow in present value 35'714'286 34'013'605 32'393'910 647'878'199 750'000'000<br />

Floating rate portion<br />

Time of payment 0.5<br />

Cash flow in current value 253'125'000 253'125'000<br />

Interest rate 2.50%<br />

Discount rate 0.9877<br />

Cash flow in present value 250'019'054 250'019'054<br />

Total cash flow in present value 285'733'340 34'013'605 32'393'910 647'878'199 1'000'019'054<br />

Share of cash flow in present value (fixed rate portion) 0.0357 0.0340 0.0324 0.6479 0.7500<br />

Weighted time of payment 0.0357 0.0680 0.0972 2.59<strong>15</strong> 2.7924<br />

Share of cash flow in present value (floating rate portion) 0.2500 0.2500<br />

Weighted time of payment 0.1250 0.1250<br />

Total portfolio duration (Dmac) 2.9174

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