Mature companies often have diversified product portfolios. Internal product development and acquisitions contribute to portfolio size over time, and larger enterprises have the infrastructure to support the marketing of a broader offering. Geographic expansion can also augment a product portfolio, with products varying in popularity among cities or countries. Diversification tends to limit growth potential while reducing downside risk, so mature firms tend to exhibit less operational volatility. This reduces the amount of speculation in equity valuation. The Proctor & Gamble Company is an example of such a company, with 65 different, well-known personal and household goods brands including Bounty, Crest and Tide.