Profit-taking a day after a historic 14.37-percent surge in shares on Monday led to a 4.82-percent drop on Tuesday, with the general price index again under the 1,000-point threshold, closing at 958.12.
Most shares also mostly declined following the previous session's record-breaking increases, due to the announcement of the Alpha Bank-Eurobank merger deal. Eurobank's share price, for instance, lost 13.84 percent in the day's trading, while heavily traded National Bank lost 6.13 percent.
Turnover was an improved 126.77 million euros.
The Big Cap index posted a decrease of 5.49 pct, the Mid Cap index ended 5.71 pct lower and the Small Cap index was down 1.80 pct.
Only the Trade sector posted gains (1.65 pct), while Financial Services (-9.22), Raw Materials (-8.88) and Healthcare (-8.48 pct) posting the biggest percentage gains of the day.
Broadly, advancers trailed decliners by 50 to 114 with another 25 issues remained unchanged. 

Sector indices ended as follows:
Insurance: -2.38%
Industrials: -4.24%
Commercial: +1.65%
Construction: -4.49%
Media: Unchanged
Oil & Gas: -0.24%
Personal & Household: -3.91%
Raw Materials: -8.88%
Travel & Leisure: -5.03%
Technology: -2.60%
Telecoms: -6.46%
Banks: -6.76%
Food & Beverages: -2.00%
Health: -8.48%
Utilities: -8.37%
Chemicals: -3.62%
Financial Services: -9.22%

The stocks with the highest turnover were National Bank, Alpha Bank and Eurobank.

Selected shares from the FTSE/ASE-20 index closed in euros as follows:
Alpha Bank: 2.51
Public Power Corp (PPC): 6.21
HBC Coca Cola: 14.66
Hellenic Petroleum: 5.81
National Bank of Greece: 3.37
EFG Eurobank Ergasias: 1.93
OPAP: 8.65
OTE: 4.20
Bank of Piraeus: 0.76
Titan: 13.57

Foreign Exchange rates – Wednesday
Reference buying rates per euro released by the European Central Bank:
U.S. dollar 1.461
Pound sterling  0.896
Danish kroner  7.563
Swedish kroner 9.327
Japanese yen 112.21
Swiss franc  1.201
Norwegian kroner 7.888
Canadian dollar 1.431
Australian dollar 1.373