The document discusses three portfolio analysis models: the BCG matrix, Ansoff matrix, and GE matrix.
The BCG matrix classifies businesses based on their relative market share and market growth rate as Stars, Cash Cows, Question Marks or Dogs. The Ansoff matrix describes four growth strategies: market penetration, market development, product development, and diversification.
The GE matrix evaluates businesses based on their industry attractiveness and competitive strength. Industry attractiveness considers factors like market growth and risk, while competitive strength looks at a company's assets, market share and costs. It sorts businesses into nine categories for strategic planning purposes.