Sanders tweet causes drug company to lose $400M in a day
© Greg Nash

A tweet posted to Sen. Bernie SandersBernard (Bernie) SandersSanders ally pushes Dems on cutting superdelegates Sanders: ‘Trump's agenda is dead’ if Democrats win back majority Hannity snaps back at 'Crybaby' Todd: 'Only conservatives have to disclose relationships?' MORE’ (D-Vt.) Twitter account on Friday afternoon caused the stock of a pharmaceutical company to crash, costing the company millions of dollars.

Sanders told his 2.6 million followers that Ariad Pharmaceuticals Inc. had raised the price of its leukemia drug “to almost $199,000 a year.”

“Drug corporations’ greed is unbelievable,” the Vermont senator tweeted.

Shortly after the tweet, Ariad’s stock lost 15 percent of its value — or $387 million dollars — its biggest intraday decline in over a year, according to Bloomberg.

The drug mentioned in Sanders tweet, Iclusig, helps to treat a rare form of leukemia, and has indeed seen its price raised four times this year alone, to $16,000 for a 30-day pack.

Hillary ClintonHillary Diane Rodham ClintonClinton takes swipe at 'false equivalency' in media coverage of 2016 election Former presidents, first ladies come together to honor Barbara Bush Romney: Parts of Comey book read 'too much like a novel’ MORE had a similar effect on the drug company Mylan, which saw its shares plummet after she accused it of “price gouging” consumers who buy its EpiPen allergy shot.