Ah, dude... I'm no financial expert myself, but I do know that share price all by itself doesn't tell you what a company is worth, or how well it is performing. To know what it's worth, you'd have to also consider how many shares there are, not just what each one costs. The result (shares * price) is called market capitalization, or sometimes "market cap" for short. A company with 1 million shares at 100$ per share would have the same market cap as one with 10 million shares at 10$. But, though it tells you more than share price alone, a single snapshot of market cap alone would still not tell you about a company's performance. For that, you have to look at trends, (the trend in share price being one). And to do it right, you have to consider other data like P/E ratio, and harder to quantify information like acquisitions, investment in R&D, sustainability of the business plan, impact of cultural and political trends, etc. It's horrendously complex and inexact. Sort of like weather forecasting.