A company devoted to one line of business, or a company whose stock price is highly correlated with the fortunes of a specific investing theme or strategy. Taobiz explains Pure Play For example, a startup R&D company developing a new technology would be considered pure play because its success depends upon a single product. Coca-Cola would also be considered a pure play in the beverage business. Whereas Pepsi wouldn't be pure play, because it has activities in the food business.