When to convert to admiral shares?

[Rando]

I'm assuming you are talking about Vanguard Admiral shares? If your account is at Vanguard it automatically moves you into Admiral shares once you hit the threshold, at least it has with me.  If you're buying Admiral shares through another brokerage I wouldn't try to time the market, just do it.

[lakelife]

After this next deposit into my roths I will have the minimum to invest in the admiral version of my stocks. Obviously this is cheaper so I want to move them. When is the best time to do this? Do I wait till this latest drop corrects back to even then move them? Thanks