Presumably when there are people spending $300 million to drop a cable into the Atlantic Ocean so they can get trades to and from Europe in 59.6 milliseconds, as opposed to the 64 milliseconds the other chumps will be stuck with, a time advantage is valuable.
In the case of locked-up government data, the press is monetizing its access, essentially. The value is in the headline, which anybody could type up, and not just anybody can get in the room.
But reporting moves markets all the time, and not just from embargoed press releases. In some cases it moves them in major ways. Like when the NYT wiped $10 billion off Walmart’s market cap in one day with its blockbuster bribery and coverup scoop. Or when Reuters took a 10 percent chunk out of Chesapeake Energy in less than one trading session with its reporting on now-defenestrated CEO Aubrey McClendon’s conflicts of interest. Those are outliers, clearly, but reporting moves markets all the time.
It makes you wonder if Chinese military hackers are the only ones trying to get into Dow Jones and Bloomberg and Reuters.