Why did G4S shares not increase in the last few hours of trading prior to going ex dividend on 02.05.19

Hi All,

I notice that most stocks increase on the day prior to their ex dividend date, but the G4S stock did not do so today, it actually decreases throughout the day.

Can anyone provide me with some insight as to why?

Thank you!

Ex-div is only one of numerous aspects related to the share price. Everything from company being featured in the news related to data security to knowing that they plan to fire their COO or hire a new CMO will impact share price because there will always be someone buying and someone selling, all the time. Therefore, you can never know whether it is just the ex-div being the root of the problem or a combination of many other factors that pose more significance to investors than the dividend payment.