High-risk, high-return stock investment strategies usually involve accurate judgments on market fluctuations, corporate prospects, and the economic environment. Here are some strategies for your reference: 1. **Small-cap stock investment**: Stocks of small companies are usually more volatile, but if the company succeeds, the returns can be very impressive. You can focus on companies with growth potential but small market capitalization. 2. **Tech stocks**: Invest in companies in emerging technologies (such as artificial intelligence, blockchain, biotechnology, etc.). These industries are developing rapidly and have great potential, but the corresponding risks are also higher. 3. **Value investing**: Look for undervalued companies in the market, especially during economic uncertainty or industry downturns. This strategy requires strong analytical skills to dig out overlooked high-quality assets. 4. **High-volatility stocks**: Look for stocks with large stock price fluctuations and try to buy at the bottom and sell at the peak. This strategy requires investors to be sensitive to market changes and requires good risk management. 5. **Leveraged ETFs (Exchange Traded Funds)**: Invest in leveraged ETFs, which can amplify the returns of market trends, but the risks are also increased accordingly. Suitable for experienced investors. 6. **Event-driven strategy**: Pay attention to upcoming mergers and acquisitions, restructuring, financial report releases and other events that are expected to have a significant impact on stock prices. Requires a keen insight into market dynamics. 7. **Short-term trading**: Use technical analysis for intraday or short-term trading, buy and sell quickly, and strive to profit from small fluctuations. This strategy requires good market grasp and quick response. 8. **Industry cycle investment**: Analyze the cyclicality of different industries and choose to buy and sell at the right time. For example, invest in cyclical industries (such as automobiles, construction, etc.) during the economic recovery period. Please note that high-risk investments may bring huge losses. Before adopting these strategies, conduct sufficient research and risk assessment to ensure that you can afford the possible losses, and consider consulting a professional financial advisor.