Rosneft is a Russian state oil company who were recently mentioned in that dodgy dossier on trump that included the bizarre golden shower stuff.

In that dossier it stated that trump was promised 19% of Rosneft in return for dropping the sanctions on Russia, which works out at about $11bn.

Well quite possibly a coincidence, but...The other day 19.5 % of Rosneft was sold in a very convoluted deal involving a multitude of shell companies and ultimately ending up in a Cayman islands account.
19.5% looks a lot like 19% plus a commission.

Of course that doesn't mean anything necessarily, especially as the sanctions are still to be dropped. But....