Greece's stock exchange has reopened with a drop of more than 22 percent after a five-week shutdown imposed by the country's debt crisis and capital controls, with the nation's outflow-hit lenders leading the way.
The ATHEX plunged to 615.72 points a few minutes after opening at 5:30pm (local time) down 22.82 percent from its June 26 close.
Skai radio reported that €10 billion had been wiped out on the stock exchange in the opening 40 minutes.
It was still down nearly 20 percent during midday trade, with analysts noting the situation could deteriorate before the market aligns itself.
"The situation in Greek equity markets will have to get a lot worse before it gets better," said Luca Paolini, Pictet Asset Management's chief strategist in London. "There are still critical risks to be resolved."
Greece's main banks took a heavy blow at the opening with drops of around 30 percent.
But investors offloaded unreservedly on all the top Greek companies, including gaming giant OPAP, main electricity provider PPC, top telecoms operator OTE and leading refiners HELPE, who were also shedding between 20 and 30 percent.
"Naturally, pressure is expected, markets will not fail to comment on such an extensive shutdown," Constantine Botopoulos, head of the capital markets commission, told Skai radio ahead of the opening.
"But we must not get carried away. We must wait until the end of the week to see how the reopening will begin to be dealt with more coolly."
The stock exchange operates as normal for foreign investors but local traders face limits on their transactions as part of the capital controls imposed by the government last month.
As a result of the restrictions, Greek investors cannot buy securities with money from their bank accounts in Greece. They will, however, be able to use foreign bank accounts or make cash transactions.
The volatility cap has been reduced from 30 percent to 20 percent during the first three days of trading.
The country's lenders are in a vulnerable position because of outflows of billions of euros from deposits over the past six months.
Some €40 billion has been withdrawn from Greek banks since December, according to the country's banks association, amid fears over the fate of the Greek economy.
The reopening of the stock market comes after senior EU and IMF auditors held their first meetings with Greek ministers to finalise a new three-year bailout for the country which could be worth up to €86 billion.
The last trading session on the Athens stock exchange was on June 26, ending a few hours before Prime Minister Alexis Tsipras announced a referendum on the stringent bailout conditions demanded by Greece's international creditors.