CFA Latest CFA Level 1 Discussions Fixed Income security question

Fixed Income security question

  • This topic has 2 replies, 2 voices, and was last updated Jul-20 by fmccray.
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    • fmccray
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      Hello,
      This question if for Level 1 in fixed income securities. I need help please.  🙁
      I am having trouble with the conversion from annual to semiannual and converting to quarterly. ( It is section 3.3 Yield measures for fixed-rates bonds. It is the formula for conversion based on periodicity i believe is what i don’t understand.

      I am assuming that (1.03) to the power of 2 is semiannual. Not sure about (1.03) to the power of 0.5 ( i have no idea why it is 0.5)

      here is the question: A firm has issued a bond with YTM of 6% on a semiannual basis. What yield should be used to compare it with an annual pay bond and a quarterly pay bond?

      A For annual pay bond – 6.09%, for quarterly pay bond – 5.96%.
      B For annual pay bond – 6.15%, for quarterly pay bond – 5.90%.
      C For annual pay bond – 615%, for quarterly pay bond – 6.20%.
      Explanation:

      A is correct. A general formula to convert an annual percentage rate for m periods per year, denoted APRm, to an annual percentage rate for n periods per year, APRn, is

      For annual pay bond: (1.03)2 – 1 = 6.09%
      For quarterly pay bond: (1.03)0.5 – 1 =1.49%.
      and for quarterly basis 1.49 * 4 = 5.96%  


      Thank you,

    • janpeter
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      The 6% number is the annual percentage rate (APR), which is just a convention that banks used. It is simply the interest rates received multiplied by the number of periods in a year. So 6% on a semiannual basis means you get paid 3% every 6 months. 

      The question is asking “If I have a bond that pays 6% on a semiannual basis, what is the equivalent APR I should shop for if I want an annual or quarterly pay bond?

      To convert, you compound it accordingly to calculate annual and quarterly interest payments, then recalculate the APR.

      So if you’re receiving 3% every 6 months,

      • to make it annual you’d compound it by 2 periods (6 months * 2): 1.03^2 -1 = 6.09%
      • to make it quarterly you’d have to compound it by 0.5 periods (6 months * 0.5): 1.03^0.5 -1 = 1.49%, which is 1.49% * 4 = 5.96%

      Bonus info: Because of the nature of compounding, frequent interest payments will always result in a lower APR. So without calculating you can already tell that C is wrong, because the quarterly pay bond APR is higher than the semiannual (6%).

      Hope that is clear, English is not my first language.

    • fmccray
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      This explanation is so helpful. English is not my first language either :). Thank you so so much.

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