Trading strategies are specific, predefined sets of rules and criteria that traders use to make decisions about buying and selling assets in financial markets. These strategies can be based on a variety of factors, such as technical analysis, fundamental analysis, market trends, or quantitative models. Some common trading strategies include trend following, mean reversion, momentum trading, and arbitrage. Trend following strategies involve buying assets that are increasing in value and selling assets that are decreasing in value, based on the belief that trends will continue in the short or long term. Mean reversion strategies involve buying assets that are undervalued and selling assets that are overvalued, based on the assumption that prices will return to their historical averages. Momentum trading strategies involve buying assets that are performing well and selling assets that are performing poorly, based on the idea that assets that are gaining momentum will continue to do so in the near future. Arbitrage strategies involve taking advantage of price differences between two or more markets or assets to generate profits with little to no risk. Overall, trading strategies are designed to help traders make informed and systematic decisions about buying and selling assets in order to maximize profits and minimize risks in financial markets.