"How are you?
"I happened upon the following animated GIF on a HFT related forum. It purports to show the rise of the algorithmic machines since 2007. Things get rather frantic in the second half of 2011, which says quite a lot.
David Fuller's view We are fine and thanks for the link above which will certainly be of interest to other people.
This is the first time-sequenced visual depicting the increasing influence of HFT that I have seen. I recommend watching it all the way through because a degree of mayhem occurs in 2011, as you will recall. If you click inside the GIF you will also find some discussion.
For more on this subject, use our search facility shown upper left, fourth item down and type high frequency in the Search box. It will produce 63 items.