Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

What is “beta” for an investment or a portfolio, and how do I use it?
I don't think either of these answers are accurate. A beta of 0 means that your stock/portfolio does not change accordingly or with the market, rather it acts independent. A beta above 0 means the stock follows what the market does. Which means if the market goes up the stock goes up, if the market goes down, the stock goes down. If the stock's beta is more than 1 the stock will go up more if the market goes up, or go down more if the market goes down. Inversely if the stock is less than 0 the stock will follow the market inversely. So if the market goes up, the stock goes down. If the market goes down, the stock goes up. Again a greater negative beta, the more this relationship will be exaggerated.