Marker on hover on the yAxis
it would be nice if a data point is hovered the y-value is not displayed in the tooltip but as a marker in the y-axis.
check this chart for a demonstration: http://www.boerse-go.de/jandaya/#Ticker/Profil/DAX
Levi Page commented
This is one of the things really lacking from HighCharts vs. AmCharts. Support for an additional Y-Axis Tooltip as well as a guide line between the chart tooltip and y-axis tooltip would be awesome.