Interest Only (IO) Strips

AAA

DEFINITION of 'Interest Only (IO) Strips'

The interest portion of mortgage, Treasury or bond payments, which is separated and sold individually from the principal portion of those same payments. The periodic payments of several bonds can be "stripped" to form synthetic zero-coupon bonds.

Also, an IO strip might be part of a larger collateralized mortgage obligation (CMO), asset-backed security (ABS) or collateralized debt obligation (CDO) structure.

INVESTOPEDIA EXPLAINS 'Interest Only (IO) Strips'

Financial engineers, such as Wall Street dealers, frequently strip and restructure bond payments in an effort to earn arbitrage profits. Zero-coupon Treasury strips are an important building block in many financial calculations and bond valuations. For example, the zero coupon or spot-rate Treasury yield curve is used in option-adjusted spread (OAS) calculations and for other valuations of bonds with embedded options.

RELATED TERMS
  1. Bond

    A debt investment in which an investor loans money to an entity ...
  2. Collateralized Mortgage Obligation ...

    A type of mortgage-backed security in which principal repayments ...
  3. Collateralized Debt Obligation ...

    An investment-grade security backed by a pool of bonds, loans ...
  4. Asset-Backed Security - ABS

    A financial security backed by a loan, lease or receivables against ...
  5. Mortgage-Backed Security (MBS)

    A type of asset-backed security that is secured by a mortgage ...
  6. Zero-Coupon Bond

    A debt security that doesn't pay interest (a coupon) but is traded ...
RELATED FAQS
  1. How can I create a yield curve in Excel?

    You can create a yield curve in Microsoft Excel if you are given the time to maturities of bonds and their respective yields ... Read Full Answer >>
  2. What are the different formations of yield curves?

    There are three main different formations of yield curves: normal, inverted and flat yield curves. The yield curve describes ... Read Full Answer >>
  3. Why would a company issue a rights offering?

    Companies most commonly issue a rights offering to raise additional capital. A company may need extra capital to meet its ... Read Full Answer >>
  4. What is the difference between share purchase rights and options?

    There is a big difference between share purchase rights and options. With share purchase rights, the holder may or may not ... Read Full Answer >>
  5. What is the difference between an option-adjusted spread and a Z-spread in reference ...

    Unlike the Z-spread calculation, the option-adjusted spread takes into account how the embedded option in a bond can change ... Read Full Answer >>
  6. In what ways can a sinking fund affect bond returns?

    The effective yield of a bond sinking fund to an investor should not be considered similar to a bond nonsinking fund. Both ... Read Full Answer >>
Related Articles
  1. Retirement

    Bond Basics Tutorial

    Investing in bonds - What are they, and do they belong in your portfolio?
  2. Professionals

    Why You Should Avoid Fixating on Bond Duration

    Financial advisors and their clients should then focus on a bond fund’s portfolio rather than relying on any single metric like duration.
  3. Investing

    The Case For Stocks Today

    Last week, U.S. equities advanced with the S&P 500 Index notching new records. Investors are now getting nervous with rate and currency volatility spiking.
  4. Mutual Funds & ETFs

    Why You May Want To Be (And Stay) In Bonds

    Bonds are complicated, and it’s easy to feel intimidated or confused. Fortunately, you don’t need to be a numbers geek to be an informed investor.
  5. Mutual Funds & ETFs

    How To Short The U.S. Bond Market

    The U.S. bond market has enjoyed a strong bull run over the past few years as the Federal Reserve has lowered interest rates to historic low levels.
  6. Investing

    Why Some Investors Are Tilting Toward TIPS

    Last month’s five-year TIPS auction drew nearly $48 billion in interest, a sign of recent renewed demand for this inflation indexed asset among investors.
  7. Investing

    What More Volatility Means For Momentum Stocks

    One byproduct of the recent tick higher in bond yields: a meaningful rise in volatility for both stocks and bonds.
  8. Mutual Funds & ETFs

    The EMAG Emerging Mkts Bond ETF: Worth the Risk?

    The Market Vectors Emerging Markets Aggregate Bond ETF (EMAG) might offer long-term rewards, but is now the best time to jump in?
  9. Mutual Funds & ETFs

    5 Dividend ETFs with Growth Potential

    A quick look at a few ETFs with substantial growth potential.
  10. Options & Futures

    How & Why Interest Rates Affect Options

    The Fed is expected to change interest rates soon. We explain how a change in interest rates impacts option valuations.

You May Also Like

Hot Definitions
  1. Moving Average - MA

    A widely used indicator in technical analysis that helps smooth out price action by filtering out the “noise” from random ...
  2. Yield Curve

    A line that plots the interest rates, at a set point in time, of bonds having equal credit quality, but differing maturity ...
  3. Productivity

    An economic measure of output per unit of input. Inputs include labor and capital, while output is typically measured in ...
  4. Variance

    The spread between numbers in a data set, measuring Variance is calculated by taking the differences between each number ...
  5. Terminal Value - TV

    The value of a bond at maturity, or of an asset at a specified, future valuation date, taking into account factors such as ...
  6. Rule Of 70

    A way to estimate the number of years it takes for a certain variable to double. The rule of 70 states that in order to estimate ...
Trading Center