Some of hedge fund billionaire George Soros' short positions dating back to 2012 were published on the Dutch financial market regulator’s website this week due to "human error" according to the regulator AFM, according to Bloomberg. Dutch bank ING is among the positions exposed and its stock price is tumbling...

As Bloomberg notes, the short positions, bets on a stock declining, were “between 0.2 percent and 0.5 percent,” of shares outstanding in the companies shorted, AFM spokesman Ward Snijders said by phone on Thursday. The Dutch regulator publishes shorts of 0.5 percent or higher on its website on a daily basis. The smaller amounts were posted by mistake, he said.



The Financial Times earlier reported that some of the positions, including bets against Dutch banks, including ING Groep NV, appeared briefly on the website on Tuesday evening. ING declined to comment on Thursday.



Short positions, which are typically closely guarded, in Deutsche Bank AG jumped when it was revealed in June that Soros had bet that the stock would fall after the U.K. voted to leave the European Union. The German bank fell 14 percent on the first day after the ballot.

The Dutch regulator’s spokesman couldn’t disclose whether there has been contact with Soros following Tuesday’s error. A spokesman for Soros didn’t immediately respond to an e-mail seeking comment.