RE: G and others v Brent This Week20 Aug 2019 13:11
They're not trying to raise the share price, but to pick up stock as inexpensively as possible, so it makes sense for them to pull back from the market from time to time, to see if the share price won't come back a bit (the reverse happened yesterday!).
Having said that, if they are aware of pending positive news, then the maintenance of a fair market would require them to cease buying until the market had been informed.