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Debt SecuritiesFunction 310 min read

2.3 Corporate Bonds

Corporate debt issues range from highly secure equipment obligations to speculative junk debentures and hybrid convertible bonds with equity participation upside.

Key FINRA Exam Takeaways

  • Secured corporate debt: Mortgage bonds (real property), Collateral trust bonds (securities), Equipment trust certificates (rolling stock/airplanes).
  • Unsecured debt: Debentures (backed only by full faith and credit) and Subordinated debentures.
  • Convertible bonds: Conversion Ratio = Par ($1,000) ÷ Conversion Price.
  • Parity calculations: Parity of Stock = Market Price of Bond ÷ Conversion Ratio; Parity of Bond = Market Price of Stock × Conversion Ratio.
  • Trust Indenture Act of 1939 requires corporate debt issues >$50M to have an independent trustee protecting bondholders.

Secured vs. Unsecured Corporate Debt

Equipment Trust Certificates (ETCs) are secured by physical machinery, airplanes, or locomotives, holding high investment-grade ratings. Debentures rely solely on the issuer's general creditworthiness.

Convertible Bonds and Parity Calculations

Conversion Ratio = $1,000 Par ÷ Conversion Price. If Conversion Price is $25, the bond converts into 40 shares ($1,000 / $25). Parity Stock Price = Bond Price ÷ 40. If the bond trades at $1,200, parity stock price is $30.

Convertible Bond Parity Calculation

An investor owns an XYZ Corp 5% convertible bond trading at 108 ($1,080). The conversion price is $20. What is the parity price of the underlying common stock?

  1. Step 1: Calculate Conversion Ratio = $1,000 Par ÷ $20 Conversion Price = 50 shares.
  2. Step 2: Calculate Parity of Stock = Current Market Price of Bond ($1,080) ÷ 50 shares.
  3. Step 3: $1,080 ÷ 50 = $21.60.
Result: Parity price of the common stock is $21.60.
Knowledge Checkpoint • Section 2.3

An investor owns an ABC Corp convertible debenture with a conversion price of $40. The common stock of ABC is currently trading at $45 per share. What is the parity price of the bond?