What are the application prospects of big data technology in the financial industry?

Specifically, for example, real-time fraud detection, big data credit reporting, public opinion analysis of social media and so on. As far as personal experience is concerned, it is feasible to use machine learning to detect users' credit records, supervise the risk of loans, and strengthen risk control. Others don't know much about what finance refers to here. If it refers to business and bus, there are simply too many application prospects. Finally, I heard that a senior CS PhD was tricked into making a quantitative trading model in the financial field by an elder I know, wrote a model and earned hundreds of thousands an hour, and now he has immigrated to the UK. What is the meaning of big data? There is a view that if I can master the state of every particle in the world, I can predict the future. In fact, everything is traceable, but there are too many influencing factors and human cognitive ability is limited, so it is necessary to refine the characteristics and extract the main influencing factors.