1. Eric Lefkofsky, the billionaire co-founder of Groupon, is making a comeback in the tech industry with a new AI-powered healthcare startup called Tempus. Tempus, which Lefkofsky founded in 2015, has filed for an initial public offering (IPO) and is seeking to raise up to $100 million. The company's mission is to use artificial intelligence and machine learning to help healthcare providers make more informed decisions and improve patient outcomes.

2. Tempus has built a comprehensive database of clinical and molecular data, which it uses to develop AI-powered tools for cancer diagnosis, treatment selection, and patient monitoring. The company has partnered with leading healthcare organizations, including the Mayo Clinic and the University of Chicago Medicine, to access patient data and develop its technology. Tempus claims to have analyzed data from over 1 million patients and has a growing network of over 1,000 oncology practices.

3. The IPO filing comes at a time when the healthcare technology sector is attracting significant investor interest, with companies like Verily, Tempus's competitor, also going public. Lefkofsky's track record as a successful entrepreneur, having co-founded Groupon and several other tech companies, is likely to generate interest in Tempus's IPO. The company's focus on using AI to improve cancer care could also make it an attractive investment for investors looking to capitalize on the growing demand for innovative healthcare solutions.