Im Analyzing Pfizer inc.

1) What would be some good examples for Risk Factors for the company as a result of a lot of Pfisers Revenues coming from outside the United States?

a) What Forex Exposure management tools might the company use?

b) How effective is their risk management program if they do have (did they make money or lose money from hedging activities)?

c) does Pfizer use Swaps and Forwards? If not what instruments do they use? What is the value of these instruments and how do they impact the company.

Thank you in advance!