I wouldn’t even remotely care.
Valuations go up and down once you IPO. They always do:
It’s just in private companies, it’s very rare you can see it. Valuations aren’t marked up and down with any regularity, and even if they are, usually you can’t see them.
Every CEO has to deal with this post-IPO. The stock price never goes up forever.
Now — it’s become a little part of pre-IPO Unicorn and Decacorn life as well.
What I would care about is growing revenue and hitting the plan. Assuming DropBox is on track, the fact that some mutual fund decided their investment is down 24% at the moment … No. Big. Deal.