I can't help but think this is a settlement between two low life, crooked, scheming, brokerages of the get-out-of-jail-free variety. After the market they would use the "dark market" that they am privileged to use to "settle up" to remain share neutral, but cash richer. They could play this game back and forth and just keep pocketing FRNs until they tire of the game and find a more lucrative form of thievery.
I only had one red share in my portfolio today. Being as it is now my second biggest holding, it really kept my overall gain down to 1.44% My star jr was up 16$ today. I am still waiting for the day that today's red stock is my star performer.