Current ES open interest volume?

Where can I find the current day's tick volume? A bit of historical, maybe past 1-2 weeks would be nice too.

i mean for free of course.

 

??..............futuresource.com

 

Here's an excel file I downloaded with Ensign and TWS. I don't know why the last 3 days show "0" for OI.

 

i looked at futuresource prior to posting. how do i find the tick volume on futuresource?

the excel file shows trading volume, not tick volume.

 

i just realized that my subject line is incorrect. i meant tick volume, not open interest volume.