The negative climate on markets across the world forced the Greek bourse into a bit of a tumble yesterday, despite some mid-cap resistance. The Athens Exchange (ATHEX) general index closed at 4,205.90 points yesterday from 4,266.84 points on Thursday, a significant drop of 1.43 percent. The blue chip FTSE/ATHEX 20 index fell by 1.87 percent, reaching 2,223.71 points. The mid-cap FTSE/ATHEX 40 index grew by 0.26 percent, while the small-cap FTSE/ATHEX 80 index fell by 0.29 percent. The FTSE/ATHEX International lost 1.57 percent to close at 5,895.39 points. Only two blue chips stayed afloat yesterday: Hellenic Technodomiki TEV (up 0.73 percent) and Hellenic Petroleum (0.40 percent). Leading the losers were EFG Eurobank (down 3.65 percent), Hellenic Post Bank (3.55 percent), Viohalco (3.49 percent), Bank of Cyprus (2.83 percent) and National Bank (2.63 percent). All but four sectoral indices moved southward, with the worst losses coming for banks (down 2.41 percent) and insurance (1.47 percent). Technology stocks went up by 1.20 percent. Turnover amounted to 1,084 million euros, of which 588 million euros concerned block trades, including the transaction of 71.7 percent of Neochimiki at 19 euros per share.