OK, let the speculation begin. What kind of news?
It would appear that the distribution of the news is very limited given the volume. It did seem like the volume increased in the last 2/3 hours along with a strong move of the pps.
I can only think of one or more settlements. That you would want to wait for a Monday to announce, not late on a Friday. IMHO,that kind of news would enable a pps run. And the knowledge would be quite limited, so more or less reflective of the volume we saw late in the day.
Any other speculation? Opty