it to that record as well. and the nasdaq is still about 1.5% away from its closing high. the biggest gainer on the dow this year is cat ehrlicater. driven by hopes that donald trump will spend big on infrastructure. united health care up 30%. it is fallen recently. shares of goldman sachs and jpmorgan chase having a great year. up 26% each. amazon is now taking on grocery stores with a twist. amazon go is a new app tied to a physical grocery store. what happens here is customers check in at the entrance with the app and grab what you want. amazon claims it can track the items through computer programs and deep learning technology. what are those?