Net open interest and number of traders

You can find the following items in net OI bar chart

1. Flip
2. Extremes
3. Positioning Trend

Flip : net bullish to net bearish or net bearish to net bullish change in positioning is flip.
Extreme : We can also find extremes in net OI bar chart and net number of traders by three years rolling STD
Positioning trend : We can study the trend change by using net OI bar chart.