I need a thorough case study report for a health insurance firm named: HUMANA. Case study report with the following topics covered below.

The firm's strategic moves/commitments that help to sustain its competitive advantage

Note: It would be good to find out if the firm is currently, or was recently, involved in these activities:

Merger or acquisition

Joint venture and/or strategic partnership

Entry into or exit from any geographic region or market segment

Value provided to customers :

1. Benefit (related to demand)

2. Costs (related to supply)