What kind news or information would make the price of a stock go up?
There is a highly related question which is much easier to answer: what normally value-increasing news about a company would cause that company to fall in value in the public stock market? By answering that, we can answer your question by proxy. The answer to that question being: anything that makes investors believe that the company won't be able to maintain the level of profit. For example, let's say a company announces a 300% profit growth compared to the previous year. This should push the stock upwards; maybe not by 300%, but certainly by quite a bit. Let's also say that this company is in the business of designing, manufacturing and selling some highly useful gadget that lots of people want to buy. Now suppose that the company managed such an profit increase by one of: In scenario 1 (firing the engineering department), it is highly unlikely that the company will be able to come up with, manufacture and sell a Next Generation Gadget. Hence, while profit is up now, it is highly likely to go down in the months and years coming up. Because stock market investors are more interested in future profits than in past profits, this should push the value of the company down. In scenario 2 (selling off the machinery), the company may very well be able to come up with a Next Generation Gadget, and if they can manufacture it, they might very well be able to sell it. However, no matter how you slice it, the short-term costs for manufacturing either their current generation Gadget, or the Next Generation Gadget, are bound to go up because the company will either need to rent machinery, or buy new machinery. Neither is good for future profits, so the value of the company again should go down in response. In scenario 3 (their product getting a large boost), the company still has all the things that allowed them to come up with, produce and sell Gadgets. They also have every opportunity to come up with, manufacture and sell Next Generation Gadgets, which implies that future profits, while far from guaranteed, are likely. In this case, the probability remains high that the company can actually maintain a higher level of profit. Hence, the value of the company should rise. Now apply this to a slightly more realistic scenario, and you can see why the value of a company can fall even if the company announces, for example, record profits. Hence, you are looking for news which indicate a present and sustained raised ability to turn a profit. This is the type of news that should drive any stock up in price, all else being equal. Obviously, buyer beware, your mileage may vary, all else is never equal, nothing ever hits the average, you are fighting people who do this type of analysis for a living and have every tool known available to them, etc etc. But that's the general idea.