Hiromichi Kato, (he/him) a PhD student in the Department of Mathematics uses the power of math to inform financial market decisions. Hiro uses mathematical models to calculate accurate derivative values. By providing more accurate derivative values, stock market traders have a better way of assessing credit risks. This ensures that mathematical models that are used to calculate credit risks, as part of risk assessments, better reflect today's real markets and are as useful and accurate as possible tools for financial decision-making.