At least some of the big trading on the 12th probably was from S&P 500 index funds selling off their stock. That's balanced of course by the MidCap400 index funds picking up the stock. I suppose that after the split that Leidos would stay on the MidCap400 but I guess we will see about that.
Lots of manipulators. Company is borrowing money to pay dividends. They want to split up the company then reverse the stock to jack up the price. It will not work and they are incompetents. Shamsters. Barely legal.