The Cambridge-based pharmaceutical company told investors last year that it was making strong progress on developing a coronavirus jab and that it had agreed contracts to deliver 400 million doses. But experts raised concerns over a lack of data on the jab’s effectiveness on people aged over 55 when the FTSE 100 company revealed its test results in November. […] It comes as the government is in negotiations with EDF about building another nuclear plant, Sizewell C in Suffolk. […] It is likely down to short covering as hedge funds back out of their positions in light of what has happened to heavily shorted stocks like GME. […] As a result of the short covering, or rather in anticipation of it, some traders (maybe some on Reddit, who knows?) may be front-running and contributing to the pump.
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