Share your insights or perspective on the financial matter presented in the input.

Do query services like Google Finance and Yahoo Finance go back to correct busted and adjusted trades?
No. Busts are very infrequent, and if an equity were illiquid enough to be affected, the bust cost would be enormous. For a liquid equity, the amount of busted volume is insignificant except during a flash crash or flash spike.  Then it would be reasonable to redownload.