By Caroline Valetkevitch
NEW YORK (Reuters) - World markets were shaken on Wednesday by a crash in Chinese stocks and concerns after euro zone leaders set an end-of-week deadline for Greece to produce proposals to secure a loan deal, while commodities prices stabilized.
U.S. stocks were down 1 percent in early trading after a 6.75 percent plunge in China shares overnight <.CSI300>. Securities regulators there warned investors were being gripped by "panic sentiment."
The yen rose to a six-week high against the dollar as investors sought safe-haven assets. Benchmark copper
More than 30 percent has been knocked off the value of Chinese shares since mid-June, and investors are worried China's market turmoil could destabilize the global economy.
"Greece and China have been at the forefront of investors' minds right now, although China is the bigger factor simply because of its size and its role as a global market player," said Ninh Chung, head of investment strategy and portfolio management at SVB Asset Management in San Francisco.
Minutes from the most recent Federal Reserve meeting also were on tap for U.S. markets.
MSCI's all-country equities world index <.MIWD00000PUS> lost 0.8 percent, while the Dow Jones industrial average <.DJI> fell 179.48 points, or 1.01 percent, to 17,597.43.
The S&P 500 <.SPX> lost 20.61 points, or 0.99 percent, to 2,060.73 and the Nasdaq Composite <.IXIC> dropped 58.00 points, or 1.16 percent, to 4,939.46.
In Asia, Hong Kong shares <.HIS> dropped 8 percent, and Japan's Nikkei <.N225> and stocks in Australia <.AXJO> took heavy blows, leaving investors only the yen
European shares <.FTEU3> were up 0.1 percent and looked on course earlier to snap a four-day losing streak.
In addition to China, eyes are still also on Greece, which made a formal request for a three-year loan deal from the euro zone rescue fund.
The bloc's leaders on Tuesday gave Athens until the end of the week to come up with proposals for reforms in return for loans. Without the aid, Greece is likely to crash out of Europe's single currency.
Against the dollar, the euro was up 0.4 percent at $1.1053
SOME COMMODS EDGE UP
Commodity markets, highly exposed to China, were slowly starting to regain their footing.
Oil prices pulled out of their dive, with U.S. crude
The selloff in metals markets also eased. Spot gold
Beijing's steps to stabilize its turbulent markets in recent weeks have had little success. More than 500 China-listed companies announced trading halts on the Shanghai and Shenzhen Exchange on Wednesday, taking suspensions to about 1,300, or 45 percent of the market. The yuan touched a four-month low in the offshore market.
The Australian dollar, often used as a liquid proxy for China plays, slumped to a six-year low against the U.S. dollar of $0.7389
In the bond market, the yield on the 10-year U.S. Treasury note
(Additional reporting by Marc Jones in London and Gertrude Chavez-Dreyfuss in New York; Editing by Ruth Pitchford and Meredith Mazzilli)