By Tanya Agrawal
(Reuters) - Wall Street was set to open lower on Thursday on concerns about a Greek default and an unexpected rise in weekly jobless claims.
European officials downplayed talk that Greece and its lenders were drafting an agreement that would provide Athens much-needed debt relief.
Initial claims for state unemployment benefits rose by 7,000 to a seasonally adjusted 282,000 for the week ended May 23, the Labor Department said on Thursday. Economists on average had expected claims falling to 270,000.
World markets were also under pressure after investors in China said several major brokerages had tightened requirements on margin financing, triggering fears of further steps to reduce leverage in the red-hot market.
Wednesday was the strongest day for the S&P 500 since May 14 and the Nasdaq Composite's strongest since late January, lifting it to its first record close since April 24.
However, low volumes and muted trading activity at the start of summer suggested the gains were not sustainable.
"There is a loss of liquidity in the market," said Jack Ablin, chief investment officer at BMO Private Bank in Chicago.
"Investors should party as long as the music is playing because once it stops you're going to have to deal with the headache."
S&P 500 e-mini futures
Dow Jones industrial average e-mini futures <1YMc1> were down 60 points and Nasdaq 100 e-mini futures
Avago
Abercrombie & Fitch
GoPro
Sanderson Farms
(Additional reporting by Sweta Singh in Bengaluru; Editing by Savio D'Souza)