(Bloomberg) -- As Brexiteer Jacob Rees-Mogg struggles to garner enough support to oust Theresa May, one of his investment firm’s wagers is also looking questionable.

Somerset Capital Management, which the U.K. lawmaker founded, massively increased its long position in Alpha Bank AE this year. But the Greek lender has seen its stock price plunge 40 percent in 2018 amid lingering doubts about the mountain of bad loans weighing on its balance sheet.

The investment firm’s misjudgment comes as Rees-Mogg’s political reputation as the darling of the Conservative Party’s right wing takes a knock. His attempt to oust Prime Minister May by encouraging colleagues to write letters of no confidence has so far failed.

Read more: Bid to Topple May Sputters as Brexiteer Revolt Struggles

Somerset owned a 1.46 percent stake in Alpha Bank as of Oct. 31, according to data compiled by Bloomberg. At the time it was worth about 30 million euros ($34 million). While Somerset first disclosed a holding in the lender on Sept. 30, 2017, it acquired most of its stake in the first quarter of this year, fund filings show.

In that three-month period, Alpha Bank traded in a range of 1.68 euros to 2.12 euros, with an average price of 1.93 euros. On Tuesday, the stock dropped 8 percent to close at a record low of 1.07 euros in Athens, suggesting that the bet has been a losing one for Rees-Mogg’s firm.

A spokeswoman for Somerset said nobody at the firm was available to comment. The investment company has disclosed equity holdings of $2.4 billion.

To contact the reporters on this story: Nikos Chrysoloras in Brussels at nchrysoloras@bloomberg.net;John Martens in Brussels at jmartens1@bloomberg.net

To contact the editors responsible for this story: Vidya Root at vroot@bloomberg.net, Paul Armstrong, Ross Larsen

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