›the activity of buying and selling shares in particular companies, and the people and organizations involved in this: It's not a good time to invest in the stock market.The company is planning to float on the stock market.There are more than 2,000 firms listed on London's stock market.In a volatile stock market, the dull, worthy stocks are often the safest option.the stock market closes/opensThe stock market closed 5.77% higher at 1,822.45 points.a stock market rises/fallsThe Japanese stock market fell over 100 points.The current stock market crash is the worst since the 1970s oil crisis.Returns on stock market investments declined.Asian/European/world etc. stock marketsCorporate giants are still dominating world stock markets.