The euro built on sharp gains from a day earlier, rising to near two-year highs against the dollar and undermining European stocks, with Germany's DAX equity index down 1.5%.
The Irish market saw the ISEQ fall to 6,705.49, a drop of 1.03% today.
C&C and Malin Corporation each performed well while Hostelworld rallied from struggles earlier this week. Origin Enterprises, Paddy Power Betfair, and Datalex all lost today
Meanwhile, the FTSE index of major European stocks fell around half a percent while Frankfurt and Paris fell by almost 1%. The CAC in France also fell to 5117 (-1.57%).
The U.S. dollar sank to its lowest in more than a year against key world currencies on Friday as investors assessed comments from the European Central Bank and obstacles to U.S. President Donald Trump's domestic agenda, while world stock markets were poised to snap a 10-session streak of gains.
Gains in the yen, gold and U.S. Treasuries pointed to moves into safe-haven assets compared with stocks that are considered riskier. Oil prices sank more than 1 percent.
The New York markets followed the global trend this afternoon with both of the major indices posting losses. The Dow Jones Industrial Average fell by a quarter of a percent to 21556 while the Nasdaq fell slightly to 6384.
In Asia, MSCI's broadest index of Asia-Pacific shares outside Japan, which has gained about 5% the past two weeks, eased 0.2%, dragged down by falling materials and financial shares.
Japan's Nikkei dropped 0.2%.