I wonder if it would not be possible to move markers a few pixels up or down from the closing value if there are more than one marker on the same day.
Say one has account fees on 12-01-2014 and you have income paid out on the same day. Normally when one moves the mouse over the markers you will only be able to see the one transaction as the mouse would always pick up the same transaction.
I know this might not be practical specially when there are more than 2 markers and the markers present the actual price at which the transaction took place. One might also add a note or alert as a marker and then it could become messy

You or other users might have a suggestion.
Regards.
fundman247.