In: Finance
Assume you establish a protective put position on OVTI stock today by buying 100 shares of OVTI stock at $30 per share and buying a 6-month put option contract on the same stock. Each put option has a strike price of $30 and a premium of $2.50. What is the breakeven stock price for this strategy?
*Assuming contact size for Put option on OVTI = 100
So Portfolio = long 100 OVTI stocks + long 100 OVTI Puts6month_$30Strike
Profitabilityportfolio = 100*(ST - S0) + 100*MAX(K-ST,0) - Put Premium
implies Profitabilityportfolio = 100*(ST - 30) + 100* [MAX(30-ST?,0) - 2.5]
implies Profitabilityportfolio = 100*[ST + MAX(30-ST?,0)] - 3250
Breakeven occurs when Profitabilityportfolio = 100*[ST + MAX(30-ST?,0)] - 3250 = 0
implies 100*[ST + MAX(30-ST?,0)] = 3250
implies [ST + MAX(30-ST?,0)] = 32.5 ...(1) {dividing by 100 on both side}
eqn (1) is satisfied when ST = $32.5.
Hence breakeven point for this stategy is when ST = $32.5.
[Note: generic formula: Breakeven point of protective Put will occur when ST = S0 + Put Premium. So in our case when when ST = 30 + 2.5 = 32.5]
*you can also construct a table and tabulate profitability for different values of ST and trace out graph to arrive at breakeven point.