Turkey's benchmark stock index fell 0.27 percent or 321.07 points to open at 118,629.70 points on Thursday.
The banking and holding sector indices lost 0.43 percent and 0.28 percent, respectively.
Among all sector indices, real estate investment trusts sector index was the best performer -- gaining 0.26 percent. Telecommunication sector index has seen the biggest fall -- down by 0.44 percent.
Turkey's exports up by 14.8 percent to reach $12.9B year-on-year in February, the Turkish Exporters Assembly announced Thursday.
The U.S. dollar/Turkish lira exchange rate slightly went up to 3.8060 as of 9.30 a.m. local time (0630GMT), compared with Wednesday's closing rate of 3.8010.
The euro/lira rate fell to 4.6450 on Thursday morning, compared with 4.6460 at the previous day's close.
The price of Brent oil was $64.66 per barrel as of 09.45 a.m. local time (0645GMT) Thursday, versus $65.19 at close on Wednesday.