Forecasting methods or models that can be used to generate forecasts of Macquarie Group’s share price.

You are an analyst working for Mercer (consulting firm), your supervisor asks you to identify one benchmark model and 3 different forecasting methods or models that can be used to generate forecasts of Macquarie Group’s share price.
Your task is to write an introduction of this report.
It may include:
Describe the problem – share price forecast/choose model
Why do it?
What is the purpose?
Value to business?