Assuming you alredy know the competitors and our market share, this is still not enough to appreciate what's going on on this market.
The minimum we should ask for to complete the picture at high level would be :
- trends over the last year (market share, diversification)
- Main differences with competitors (product, segment targetted, distribution, pricing)
- Potential substitution / new entrants
- external factors potentially impacting market in favor of one or other (regulation, etc.)
I think we would need more info on the case background (at least what is the central question) to provide more specific insights.