No idea what the process for getting this information released is... but it feels unlikely to be a coincidence that on the day a 2nd extremely effective vaccine is announced to the world... Airbnb files their public S1.

A lot of that document talks about COVID-19 and how it's effected their business (no surprise there) but also several mentions of vaccines. Mostly in the following phrase (repeated 3 times in the document, I think):

> The extent and duration of the adverse impact of COVID-19 on the Company over the longer term remain uncertain and dependent on future developments that cannot be accurately predicted at this time, such as the severity and transmission rate of COVID-19, the extent and effectiveness of containment actions taken, including mobility restrictions, the timing, availability, and effectiveness of vaccines, and the impact of these and other factors on travel behavior in general and on the Company’s business.