I was exploring some of the settings of our Bid-Ask charts for some documentation I was preparing, and I came across this unusual feature that is really kind of interesting to look at. Here’s a little run-through of how to reproduce my experience.
First open up a chart for your favorite contract. Then change the Chart Type setting to Bid-Ask Volume. Double-click on any bar profile to open the plotter customization settings.
Uncheck the Bar Histograms checkbox, then take a look at your chart. Nothing special, should just show some transparent candles with bid/ask values inside. Now go back to the settings, turn on the Bar Histograms, and then check Constant Width and ensure Opaque Volume is not checked. Then turn off Bar Histograms again. Now zoom out until the candles disappear. You should see something akin to Tetris building out on the screen:
But wait, there’s more(!). Open the settings once again, and change the Bid-Ask Chart Type setting to Delta and observe.
Now it’s more like The Game of Life (the programming/math one). I’ll let the analysts have a go at making some good sense out of these chart types, but I think the first example is pretty fun to look at.