I-spread

The Interpolated Spread, I-spread or ISPRD of a bond is the difference between its yield to maturity and the linearly interpolated yield for the same maturity on an appropriate reference yield curve. The reference curve may refer to government debt securities or interest rate swaps or other benchmark instruments, and should always be explicitly specified.^[1] If the bond is expected to repay some principal before its final maturity, then the interpolation may be based on the weighted-average life, rather than the maturity.^[2]

References

^ O'Kane, Dominic; Sen, Saurav (March 2004). "Credit Spreads Explained" (PDF). Lehman Brothers. pp. 4–6. Archived from the original (PDF) on July 5, 2010.
^ Ho, Thomas S.Y.; Lee, Sang Bin (2004). "Valuation of a Bond". The Oxford Guide to Financial Modeling. Oxford University Press. p. 265. ISBN 978-0-19972770-4.

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[1] O'Kane, Dominic; Sen, Saurav (March 2004). "Credit Spreads Explained" (PDF). Lehman Brothers. pp. 4–6. Archived from the original (PDF) on July 5, 2010.

[2] Ho, Thomas S.Y.; Lee, Sang Bin (2004). "Valuation of a Bond". The Oxford Guide to Financial Modeling. Oxford University Press. p. 265. ISBN 978-0-19972770-4.

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v t e Bond market
Bond Debenture Fixed income
Types of bonds by issuer	Agency bond Corporate bond Senior debt Subordinated debt Distressed debt Government bond Infrastructure bond Municipal bond Global bond
Types of bonds by payout	Accrual bond Auction rate security Callable bond Commercial paper Consol Contingent convertible bond Convertible bond Exchangeable bond Extendible bond Fixed rate bond Floating rate note High-yield debt Inflation-indexed bond Inverse floating rate note Lottery bond Perpetual bond Puttable bond Reverse convertible securities Zero-coupon bond
Bond valuation	Clean price Convexity Coupon Credit spread Current yield Dirty price Duration I-spread Mortgage yield Nominal yield Option-adjusted spread Risk-free bond Weighted-average life Yield curve Yield spread Yield to maturity Z-spread
Securitized products	Asset-backed security Collateralized debt obligation Collateralized mortgage obligation Commercial mortgage-backed security Mortgage-backed security
Bond options	Callable bond Convertible bond Embedded option Exchangeable bond Extendible bond Puttable bond
Institutions	Commercial Mortgage Securities Association (CMSA) International Capital Market Association (ICMA) Securities Industry and Financial Markets Association (SIFMA)

See also

References