Various commentators have suggested that in the wake of the US anti-trust approval the city now has a more benign view of BA, and then use this to support any number of propositions.
Their attention is drawn to the screenshot at the bottom of this post:
FT Alphaville Barclays, reconsidered (and updated). Fully 30% of BA's stock has been loaned out, to be used by short-sellers. That's a lot of money betting on BA's share price falling.