But news will have a negative impact on the stock rally. When bad news comes out, the stock market may be affected and fall, which is the news that has a negative impact on the stock price. In the stock and securities markets, what do you mean by long and short, long, bullish and bearish? Bulls: people who are optimistic about the stock market prospects, buy stocks first, and sell stocks to earn the difference when the stock price rises to a certain price. Short position: refers to the investor's change that the stock price has risen to the highest point and will soon fall, or the stock has begun to fall, and it continues to fall and is sold at a high price. Negative: push the stock price down, negative factors and news. Lido: It is a factor and news that stimulates the stock price to rise and is beneficial to bulls. Sky: This is an act of taking a pessimistic view of the stock price prospect. Borrow shares to sell, or sell stock futures, and then buy them back after a long time. Short-term: the act of turning the stock price into bearish in the short term, and selling and covering the position by borrowing shares in the short term. Changduo: It is a kind of behavior that is optimistic about the long-term stock price and thinks that the stock price will continue to rise for a long time, so buy stocks and hold them for a long time, and then sell them after the stock price rises for a long time to earn the difference income. Short-term: it is the behavior of optimistic about the stock price, buying the stock and selling it without a slight increase in the stock price. Fill in the blank: it is the act of buying back previously sold shares.