The Morningstar Star Rating for Stocks is assigned based on an analyst's estimate of a stocks fair value. It is projection/opinion and not a statement of fact. Morningstar assigns star ratings based on an analyst's estimate of a stock's fair value. Four components drive the Star Rating: (1) our assessment of the firm's economic moat, (2) our estimate of the stock's fair value, (3) our uncertainty around that fair value estimate and (4) the current market price. This process culminates in a single-point star rating that is updated daily. A 5-star represents a belief that the stock is a good value at its current price; a 1-star stock isn't. If our base-case assumptions are true the market price will converge on our fair value estimate over time, generally within three years. Investments in securities are subject to market and other risks. Past performance of a security may or may not be sustained in future and is no indication of future performance.