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HTQHow To Quant
Problem

A trader constructs a bull spread on a stock currently trading at S_0 = \100$ by:

  • Long 1 call with strike K_1 = \95C_1 = $10$
  • Short 1 call with strike K_2 = \110C_2 = $3$

Both calls share the same expiry; each contract covers 100 shares.

Questions

  1. What is the net premium paid per share?
  2. What are the maximum profit and maximum loss per share?
  3. What is the breakeven stock price at expiry?
  4. What is the profit per share if S_T = \105$?