Players have moved in late on Friday to make sure the market doesn’t close on a down note for the week. That way, media can report “the Dow closed up on Friday reversing the previous down market”, etc. They don’t have to report anything other than that to give the impression that the market closed up for the week.
Go look at the graph for the DOW and tell me that wasn’t a deliberate Friday afternoon ploy. The market had been down all day until it started moving up around 3:30. I do not see any amazing news that would have caused the sudden reverse course.