This link works ... Not a complete explanation but it does straighten out the dates.
More recently, market researcher and retail investor Ryan Rigg observed that the company had already held this position on June 30, 12 days before the assassination attempt, but filed it with the US Securities and Exchange Commission (SEC) on July 12 – one day before the attack."
Even if true this still sounds like criminal activity, two weeks is not too much lead time for those wankers to have been acting on an illegal tip off.