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This is a Finmath question.Problem 1 As an employee of Stark Industries, you participate in the employee stock purchase plan. The share price of Stark

This is a Finmath question.Problem 1
As an employee of Stark Industries, you participate in the employee stock purchase plan. The
share price of Stark today is S0=40. One year from today, the company will deduct $3000
from your paycheck, and in exchange you will acquire shares of Stark at the below-market price of
min(30,0.75S1) per share (a 25% discount to the price today or to the price in a year, whichever
is lower). The entire $3000 will be spent on Stark shares (including fractional shares if necessary).
There is no risk that Stark will default on this plan, and no risk that you will leave the company
in the next year.
Stark stock follows a geometric Brownian motion with =0.22. It pays no dividends. The
interest rate on the bank account is r=0.05. Markets are frictionless.
If this question asks you for a value or a position, your final answer must be a number. When
you state a position, we will assume it is a long position, unless you either use a "-" sign or say
"short".
(a) The stock purchase plan (consisting of the debit of $3000 and the receipt of shares) is an
asset to you. Find its time-0 value.
(b) The value of the plan will fluctuate as Stark stock fluctuates. Suppose you don't want to be
subject to this risk. What time-0 position, in vanilla options, should you take, in order to
hedge perfectly that risk? (Assume that European calls and puts on Stark are available at
any strikes and expiries that you desire.) Does this position need to be rebalanced over the
course of the year?
(c) Now suppose that options on Stark are not available. What time-0 position in Stark stock
should you take, in order to hedge perfectly that risk? Does this position need to be rebalanced
over the course of the year?
By "hedge perfectly", I mean that the stock purchase plan together with your proposed hedge (a
self-financing portfolio strategy) should have a total time-1 value which is non-random.
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