Takeover rumors about Twitter surface with seeming regularity. But one on Tuesday showed a new level of sophistication in an effort to pump up the company's stock.

Shares of Twitter briefly spiked after an article that appeared to come from the Bloomberg News website contended that the company had received a takeover offer worth $31 billion. Analysts and Twitter users quickly started poking holes in the online piece and deemed it a fake. No such report ran on the Bloomberg terminal, where its official news reports first appear.

New York Times