• A box spread is an option arbitrage strategy that combines buying a bullish call spread with a corresponding bearish put spread.

  • The end win of a boxed spread will always be the difference between the two strike prices.
  • The longer the time until expiration, the lower the market price of the box spread today.
  • The costs of implementing a box spread, in particular the commissions charged, can be an important factor in its potential profitability.
  • Traders use box spreads to synthetically borrow or lend for money management purposes.