There is a related link that zooms into trading during the demo event (postmarket hours)
Palantir Live Demo Day LIVE January 26, 2021 Event ended started at 4:30 PM and ended 5:38 PM ET 00:00:29 Introduction 00:08:07 Foundry Demo 00:30:26 Foundry Roadmap 00:39:26 Gotham Introduction 00:42:21 Gotham Demo 00:54:11: Apollo