Investment bankers must conduct market research and due diligence for potential deals, clients, or investors. Data analytics can help with this task by gathering and analyzing comprehensive and reliable information from various sources and techniques. For instance, public databases and reports provide financial, operational, regulatory, and legal data on companies, industries, markets, and economies. Data analytics can also access and extract the most relevant and updated data from various platforms and formats. Additionally, proprietary databases and tools offer specialized data on deals, transactions, valuations, and performance. Finally, surveys and interviews collect qualitative data on customer preferences, satisfaction, feedback, and behavior. Data analytics can design more effective surveys by using methods such as sampling, segmentation, clustering, and sentiment analysis.