let's bring in one of those traders profiled in that piece, katy kaminski, chief research strategist and portfolio manager who has about $6.5 billion in assets under management. katy, a great profile to read, mainly because it is all about the quan. i am curious, start with away quan trading has really changed for you. we knew of the blue ups -- the blowup, and the pandemic that upends the industry again. what have you noticed is the biggest shift about the quan industry? katy: the most important thing is quan is a spectrum and these days, everything is influenced by quan. it used to be very much a niche part of our business, but after what we have seen in technology and all the data science, quan is in everything we do in finance. for me, that is a good and exciting change. and it is part of everything we do because it is about data. caroline: it is about infrastructure as well. as we speak to you, how much has that been stress tested? i think it has been a great example of how technology can really revolutionize business. for us who have been more your tried-and-true classic want --