Pure Play
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.
Investopedia Commentary
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.
See also: Stock
pure play