HFTs? Dark pools? Nah, same old NYSE. https://nypost.com/2018/12/06/ny-stock-exchange-let-morgan-stanley-make-after-hours-trade/
Notice ... To they are freaking out over who told, not how this happened! Arrogant sobs. https://nypost.com/2018/12/07/nyse-...t-expose/amp/#referrer=https://www.google.com
What 3rd market? Who would take the other side of large orders from Morgan Stanley unless they could arbitrage it?
OK, I'm not an insider so I don't really know how this happens. But this is the play in my conspiracy infected mind : 15:30 MS: Hey, I need 1M shares of XYZ sold at $90 or better. 15:31 DMM: No problem, will accumulate by market close. 15:55 DMM: Yo, I got the shares (avg price 90.75), send the order to my desk please. 15:57 DMM: Yo, WTF where is the order!? 15:59 MS: Hold on, the client tried to send to us but his PC is doing automatic Windows updates ... 80% done. 14:00 DMM: Are you F#@ kidding me ... I'm siting on million shares here! Need that order ASAP or it's my ass! 14:01 MS: Don't sweat it, you know I'm good for it. Just make it happen ... I will make it up to you!
Your conspiracy-infected mind also seems to employ time travel? Your timestamps have traveled back 2 hours.
This is in violation of fair dealing and fair market practice. This should be investigated by SEC. If MS can do this then everybody should be able to allowed to do this and very soon there would be no market cutoff time at the NYSE. Especially that in this case, MS being allowed to put in the 4 trades after hours when everyone else was not allowed to anymore did result in material financial benefit for MS. MS should at the very least, disgorge the profit it made from the close of NYSE on Friday to the open of NYSE on Monday. Should MS not had been allowed to put in the four trades, it wouldn't have made those profit so they are not entitled to them.