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Adjustable Long-Term Putable Security: A Comprehensive Overview

A dual currency bond with floating interest rate and an inbuilt put option that provides flexibility and risk management.

An Adjustable Long-Term Putable Security (ALTPS) is a sophisticated financial instrument that combines features of dual currency bonds, floating interest rates, and put options. It is designed to offer investors flexibility and risk management in dynamic market conditions.

Types

  1. Single-Callable Adjustable Long-Term Putable Security: Offers a one-time option to the investor to redeem the bond before maturity.
  2. Multi-Callable Adjustable Long-Term Putable Security: Allows multiple redemption opportunities at specified intervals.
  3. Currency-Swappable Adjustable Long-Term Putable Security: Includes an option to swap the bond’s currency at certain intervals.

Floating Interest Rate

A floating interest rate means that the bond’s interest payments vary with market interest rates. The rate typically resets at predefined intervals based on benchmark rates like LIBOR or EURIBOR.

Put Option

A put option embedded in the security allows investors to sell the bond back to the issuer before maturity at predetermined conditions. This feature provides a safety net against adverse market movements.

Valuation Model for Put Option

The valuation of the embedded put option can be done using the Black-Scholes model or binomial tree model. The formula for the Black-Scholes model is:

$$ P = K \cdot e^{-rT} \cdot N(-d2) - S \cdot N(-d1) $$

where:

  • \( P \) is the price of the put option
  • \( K \) is the strike price
  • \( r \) is the risk-free interest rate
  • \( T \) is the time to maturity
  • \( N \) is the cumulative distribution function of the standard normal distribution
  • \( S \) is the spot price
  • \( d1 \) and \( d2 \) are intermediary steps calculated in the Black-Scholes formula

Importance

ALTPS are important for investors seeking exposure to foreign currencies with an added layer of interest rate flexibility and early exit options. They are applicable in diverse investment portfolios for risk diversification.

Considerations

  • Market Risks: Interest rate and currency fluctuations can impact returns.
  • Liquidity: May be less liquid compared to traditional bonds.
  • Complexity: Requires sophisticated knowledge to understand and manage.
  • Dual Currency Bond: A bond issued in one currency but with principal or interest payments in another currency.
  • Floating Rate Note (FRN): A bond with variable interest rates adjusted periodically.
  • Put Option: A financial contract giving the owner the right to sell an asset at a specified price.

Expressions

  • Call the Bond: Exercise the put option.
  • Yield Chasing: Seeking higher returns through complex instruments like ALTPS.

FAQs

  1. Q: How often are interest rates on an ALTPS adjusted? A: Typically, they are adjusted at predefined intervals, such as quarterly or semi-annually, based on benchmark rates.

  2. Q: What is the main advantage of an ALTPS? A: It offers flexibility with floating interest rates and protection through the put option.

  3. Q: Are there any significant risks? A: Yes, market volatility and liquidity risks are significant considerations.

Revised on Monday, May 18, 2026