Citi CFO Mark Mason: We've been investing in AI tools

Yeah. Well, look, the first thing to go along with that topline momentum that I referenced, 8% topline growth and growth across each of those segments was very good expense discipline throughout the quarter. So, you saw our expenses were up about 2%, they're down 1% at the half.That expense discipline does come with investment as well. We've been investing in technology, we've been investing in our transformation work, and we've been investing in AI tools. to your question.We've taken kind of a multi-pronge ...