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关于 T Bill

(2023-10-05 15:26:47) 下一个

        今天10/5/2023, 周四, 是 T Bill 中 4 week 和 8 week 的 auction day,也是13 week,26 week, 和 52 week的 issue day。

        下面把6期(4、8、13、17、26、52 week)的 T Bill 汇总如下,包括它们的最新 auction出来的利率,以及计算后的等效利率,以作对比。

为了更为清晰,做出当今的 T Bill 周数和等效利率的关系曲线, 并和一年前的数据相对比:

T Bill 利率计算如下:

Treasury Calculation Examples 033104 v11.xls (treasurydirect.gov)

只是读起来很头疼。最后抄来一段CD 利率的计算方法:

Formula for Calculating CD Interest

A = P(1+r/n)(nt)

  • A is the total that your CD will be worth at the end of the term, including the amount you put in.
  • P is the principal, or the amount you deposited when you bought the CD.
  • R is the rate, or annual interest rate, expressed as a decimal. If the interest rate is 1.25% APY, r is 0.0125.
  • n is the number of times that interest in compounded every year. Most CDs pay interest that is compounded daily, so n = 365. Check with your bank to verify the interest is compounded daily.
  • t is time, or the number of years until the maturity date.
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