The Swiss National Bank (SNB) revealed on Friday that abandoning its currency cap on the euro in January cost the central bank 50.1 billion Swiss francs ($52 billion) in the first half of the year.
In its interim earnings release, the central bank detailed the full extent of its balance sheet pain, as unlike most of its major counterparts, the SNB is privately run and has shareholders to report to like a regular company.
"(The) appreciation of the Swiss franc led to exchange rate-related losses on all investment currencies," the SNB said in a news release on Friday.
The central bank said that 3.2 billion Swiss francs had also been lost on its holdings of gold.
SNB shares are listed on the stock exchange, with approximately 55 percent held by public shareholders (including regional member states of Switzerland, called cantons).
Ipek Ozkardeskaya, a market analyst at London Capital Group, said that SNB dividends might also be squeezed by the central bank's heavy losses over the last six months. This could prove problematic she said, given the economic slowdown in Switzerland.
For 2015, the SNB's dividend is 15 Swiss francs per share, before tax.
"At these times of economic slowdown, Swiss cantons need cash for public spending in order to sustain the economic activity. Unexpected costs on cantons' budget is all but needed nowadays," Ozkardeskaya said in a research note on Friday morning.
Switzerland's gross domestic product fell by 0.2 percent in the first quarter of 2015, but there are signs the economy is fighting back.