Entire Section

  • Duration Method

    • PIB A5.2.19

      An Authorised Firm with the necessary capability may, with the written consent of the DFSA, use the Duration Method, which produces a more accurate measure for General Market Risk than the Maturity Method. An Authorised Firm must elect and use the Duration Method on a continuous basis and will be subject to supervisory monitoring of the systems used.

      Derived from RM111/2012 (Made 15th October 2012). [VER20/12-12]

    • PIB A5.2.20

      Under the Duration Method, the following steps must be carried out:

      (a) the duration weighted position for each instrument must be calculated by multiplying the market value of each individual long or short net position by the Modified Duration in years and the assumed interest rate change in the table below;
      (b) the sum of the weighted long and the sum of the weighted short positions in each time band must be calculated;
      (c) these weighted long and short positions must be matched within a maturity band to give the total matched weighted position in the maturity band and the total unmatched weighted position which will be long or short in the maturity band;
      (d) the matched weighted positions in all maturity bands must be summed;
      (e) the unmatched weighted positions in all the maturity bands must then be matched within a zone leaving an unmatched position for the zone (which will either be short or long); and
      (f) the unmatched positions in each zone must be matched with the unmatched positions in other zones leaving the residual unmatched weighted position.
      Zone Modified Duration Assumed move in interest rates (percentage points)
      A 0 ≤1 month 1.00
      > 1 ≤3 months 1.00
      > 3 ≤6 months 1.00
      > 6≤12 months 1.00
      B > 1.0 ≤1.9 years 0.90
      > 1.9 ≤2.8 years 0.80
      > 2.8 ≤3.6 years 0.75
      C > 3.6 ≤4.3 years 0.75
      > 4.3 ≤5.7 years 0.70
      > 5.7 ≤7.3 years 0.65
      > 7.3 ≤ 9.3 years 0.60
      > 9.3 ≤10.6 years 0.60
      > 10.6 ≤12.0 years 0.60
      > 12.0 ≤20.0 years 0.60
      > 20 years 0.60
      Derived from RM111/2012 (Made 15th October 2012). [VER20/12-12]

    • PIB A5.2.21

      For the purposes of this section Modified Duration is calculated as follows:

      Modified Duration = duration (D) / (1 + r)

      where:

      r = yield to maturity

      Ct = cash payment in time t

      m = total maturity

      Derived from RM111/2012 (Made 15th October 2012). [VER20/12-12]

    • PIB A5.2.22 PIB A5.2.22

      The General Market Risk requirement for each currency must be calculated as the sum of the following:

      (a) 5% of the matched weighted positions in each time band;
      (b) 40% of the matched weighted position in zone A;
      (c) 30% of the matched weighted position in zones B and C;
      (d) 40% of the matched weighted position between zones A and B, and between zones B and C;
      (e) 100% of the matched weighted position between zones A and C; and
      (f) 100% of the residual unmatched weighted positions.
      Derived from RM111/2012 (Made 15th October 2012). [VER20/12-12]

      • PIB A5.2.22 Guidance

        A worked example of the General Market Risk requirement calculation under the Duration Method is as follows:

        Zone Modified Duration Individual Net Positions Assumed move in Modified Duration Weighted Individual Net Positions By Timeband By Zone Between Zones
          (years) Long Short (%p.a) (years) Long Short Matched Unmatched Matched Unmatched Matched Matched
        A < 1 month $100.00 -$50.00 1.00% 0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $1.30    
        1 to 3 months $200.00 -$100.00 1.00% 0.20 $0.40 -$0.20 $0.20 $0.20        
        3 to 6 months $300.00 -$200.00 1.00% 0.40 $1.20 -$0.80 $0.80 $0.40        
        6 to 12 months $400.00 -$300.00 1.00% 0.70 $2.80 -$2.10 $2.10 $0.70        
                                   
        B 1 to 1.9 years $100.00 -$200.00 0.90% 1.40 $1.26 -$2.52 $1.26 -$1.26 $0.00 -$5.27 Zone 1&2  
        1.9 to 2.8 years $200.00 -$300.00 0.80% 2.20 $3.52 -$5.28 $3.52 -$1.76     $1.30  
        2.8 to 3.6 years $300.00 -$400.00 0.75% 3.00 $6.75 -$9.00 $6.75 -$2.25       Zones 1&3
                                  $0.00
        C 3.6 to 4.3 years $100.00 -$100.00 0.75% 3.65 $2.74 -$2.74 $2.74 $0.00 $4.50 $8.89 Zone 2&3  
        4.3 to 5.7 years $200.00 -$200.00 0.70% 4.65 $6.51 -$6.51 $6.51 $0.00     $3.97  
        5.7 to 7.3 years $300.00 -$100.00 0.65% 5.80 $11.3 1 -$3.77 $3.77 $7.54        
        7.3 to 9.3 years $100.00 -$200.00 0.60% 7.50 $4.50 -$9.00 $4.50 -$4.50        
        9.3 to 10.6 years $200.00 -$100 0.60% 9.75 $11.7 0 -$5.85 $5.85 $5.85        
        10.6 to 12 years $0.00 $0.00 0.60% 11.00 $0.00 $0.00 $0.00 $0.00        
        12 to 20 years $300.00 -$300.00 0.60% 14.50 $26.1 0 -$26.10 $26.10 $0.00        
        Over 20 years $0.00 $0.00 0.60% 22.00 $0.00 $0.00 $0.00 $0.00        
                        $64.10     $4.92    

        Total General Market Risk requirement =

        5% ($64.10) + 40% ($0) + 30% ($4.50) + 40% ($5.27) + 100% ($0) + 100% ($4.92) = $11.58

        Derived from RM111/2012 (Made 15th October 2012). [VER20/12-12]