altho 'the other investor' was identified with more details around 2:06am 7/23, eastern time, when barclay made the announcement, followed by a 2.6% jump in london that morning.
It's headline everywhere early morning of 7/23 as it is almost the biggest event that morning in london. Even when I mentioned blackstone during lunch that day, someone said that she had seen something about bayclay related to blackstone this morning.

It's hard to believe that anyone in financial sector would be surprised to see that at noon of 7/23.
It doesn't matter it's first on BBC or wsj, it's on the wire when it hit the wire.

Can not believe someone use the headline in london market as 'unoffical insider information' to brag about 12 hours later in US.

Even for a 'professional', who missed the headline in london market, and got friend's text message(an interesting communication channel) later on, still thought it is an 'unofficial insider information', he would be fired right away by his boss and/or clients.

professional? my ass.