taylor: thanks to glen o'donnell. analyst at forester.ater, nations around the world are taking drastic measures to stop the spread to have deadly coronavirus. we'll go inside one biotech firm where scientists are racing to create antibodies, next. plus tiktok has a new u.s. rival. it's a reboot of an old favorite app, vine. we'll take a closer look at it next. this is bloomberg. ♪ taylor: online mattress retailer casper is seeking an i.p.o. valuation just over $744 million, a drop its heyday of $1.1 billion. in a regulatory filing monday, the start-up plans to sell 8.35 million shares for $17-$19 each. this makes it short of the $1 billion needed to be a unicorn company. founded in 2014, casper popularized the bed in a box industry. i was joined by liana baker in new york to discuss the first closely watched i.p.o. of the year. >> it is about a 30% drop and it is all about the timing. that $1.1 billion evaluation that casper had came in march 2019 that was before the debacle and the aftermarket performance of uber, lyft and peloton. and