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

A tweet posted to Sen. Bernie SandersBernard (Bernie) SandersBrown launches tour in four early nominating states amid 2020 consideration Gillibrand announces exploratory committee to run for president on Colbert Dem chairman Cummings meets with Trump health chief to discuss drug prices 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 ClintonGillibrand announces exploratory committee to run for president on Colbert Former PepsiCo CEO being considered for World Bank chief post: report Live coverage: Trump AG pick grilled on Mueller probe at confirmation hearing 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.