That big 1.8 billion ES trade was probably Putin going long - note the huge $80,000,000 draw down this trade incurred only hours into it - talk about the puke bucket. If they made it through that jolt they scored a few hundred fast points and still going!
http://ismboard.com/how-the-biggest-e-mini-futures-trade-of-2016-sent-the-market-soaring/
http://ismboard.com/how-the-biggest-e-mini-futures-trade-of-2016-sent-the-market-soaring/
. Suprised this trade did not register in IB or TradeStation on the intra-day volume.