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

How can you correlate a company stock's performance with overall market performance?
Generally, if you are trend trading, and if the market as a hole is going up strongly and an individual stock is falling sharply on the same day, I would tend to stay away from buying that stock at the moment. The market is showing strength whilst at the same time the stock is showing weakness. The general rule of thumb for trend trading is to buy rising stocks in a rising market. Or you could look to short sell falling stocks in a falling market.