Throwing in a scenario18 Feb 2019 23:04
Board sees JD's move purchasing 8M+ shares. Say's hey whats going on we don't want a take over whether it be agreed or hostile so someone on the Board buys a matching 8M+. Now not enough shares available currently to fulfill JD's requirements so only way is to entice Institutional Investors and Pi's to sell so price rises dramatically.
Sweet dreams