Empty spaces between records

Yes,

For stock market data you need a different axis type, called the CategoryAxis

Take a look at this: Category Axis documentation.

• NumericAxis, DateTimeNumericAxis are value axis. this means they measure the x-distance based on value
• CategoryAxis: measures the x-distance based on index.

Everything in a chart with a CategoryAxis is measured according to the index of the first series. This adds some extra complications, for example:

• Every series must have the same length (same number of points)
• Moving averages which have empty points at the start should have values prepended with X=date, Y=NaN

However, if you do that, you will achieve a stock market chart with collapsed values at weekends and overnight.

Take a look particularly at the Creating a CategoryAxis with Financial Data example in the Category Axis documentation. Also see our Multi Pane Stock Charts demo which uses EUR/USD data and a category axis on the XAxis.

Best regards
Andrew