How is data science applied in investment banking? What do data scientists do at investment banks? What tools are they using? What kind of analysis are they doing? Why are they doing it? Etc.
In investment banks, this role is called "Quant" (Quantitative analyst). A quantitative analyst is a person who specializes in the application of mathematical and statistical methods to financial and risk management problems. The occupation is similar to those in industrial mathematics in other industries.

https://www.phaidoninternational.com/industryinsights/the-growth-of-quants-in-investment-banks-71503010311421

https://www.investopedia.com/articles/active-trading/111214/quants-what-they-do-and-how-theyve-evolved.asp

https://www.investopedia.com/articles/financialcareers/08/quants-quantitative-analyst.asp

https://en.wikipedia.org/wiki/Quantitative_analyst