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Short Selling the Issuer’s Stock in the Convertible Bond Arbitrage

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Academic paper

Profitable Price Impact: The Case of Convertible Bond Arbitrage

AuthorsMilad Nozari; Michael Pascutti; Heather Tookes

Institute
  • ?Yale School of Management - International Center for Finance
  • Yale University
  • ?Department of Economics
  • ?Yale University - International Center for Finance
  • ?Yale University - Yale School of Management

Strategy in a nutshell

The investment strategy focuses on firms with convertible bonds that were marketed for more than one day, excluding stocks priced below $5. Due to the significant stock price decline observed on the pricing day of convertible bonds, the strategy involves taking a short position on the bond's pricing day to capitalize on this predictable drop in stock value.

Economic rationale

The paper highlights significant stock price declines on convertible bond pricing days, driven by price pressure from hedging or potential stock manipulation, which may act as complementary forces. Convertible bonds are often issued at incorrect prices, enabling arbitrageurs to profit. Arbitrageurs have little incentive to limit short-selling intensity before bond pricing, as the downward price pressure benefits them through abnormally low strike prices embedded in the bonds. This dynamic results in temporarily inefficient stock prices and a potential wealth transfer from issuing firms to convertible bond buyers. Capitalizing on this phenomenon, short-selling stocks during bond pricing days is profitable, mirroring arbitrageurs’ strategies.

Backtest performance

Annualised return2.25%
Volatility4.47%
Sharpe ratio0.5