On this week's Silicon Insider podcast, tough-tied host Michael S. Malone, and special correspondent Scott Budman declare that it's "IPO Bonanza!" Five big tech companies have announced that they are filing to Go Public: Palantir (is it still officially a Valley company?), Airbnb, Osana, Snowflake and Unity -- all software companies. Given the timeline, did all of these companies undertake the long march to filing their S-1 during the pandemic?