The following public trade types are displayed on the stock pages of
Trading Devices for reference:

D   =  Odd lot transaction
M   =  Manual or Special lot non-Direct Business transaction
P   =  Pre-open transaction (trade concluded before market open including
       that concluded but not recorded in the system before market close
       of the previous trading day)
U   =  Auction transaction
X   =  Manual or Special lot Direct Business transaction
Y   =  Automatch Direct Business transaction
" " =  Automatch non-Direct Business transaction
*   =  Rejected/Cancelled transaction