LONDON — Ongoing concerns about Greek debt dented Europe’s stock markets in mid-morning trading on Friday, with all the major indices losing ground.

The CAC 40 in Paris and the FTSE MIB in Milan were both down 1.1 percent, to 4,934.87 and to 23,088.43 respectively while the DAX in Frankfurt fell 1 percent to 11,233.25 and the FTSE 100 in London dipped 0.7 percent to 6,812.72.

The euro traded at $1.13, while the pound fetched $1.54, and the Swiss franc equaled $1.07 at 11:50 a.m. CET.

European retail and luxury stocks were also down, with the morning’s biggest fallers including MySale.com , 2.2 percent to 0.56 pounds; Yoox Group, 2.3 percent to 29.40 euros; Moncler, 1.5 percent to 17.02 euros; Luxottica Group, 1.7 percent to 59.65 euros; and Aeffe, 2.2 percent to 2.28 euros.

Among the few stocks that gained ground were Koovs.com, 2.1 percent to 0.74 pounds; and French Connection Group, 1 percent to 0.45 pounds.

The Greek government was due to pay the International Monetary Fund 300 million euros today, but has secured a new deadline of June 30 when its bailout deal with the European Union and the IMF expires. Greece is still negotiating the terms of its bailout deal with its international creditors.

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