** Shares of chip design software maker Synopsys SNPS.O down 1.3% at $488.48, while simulation software company Ansys ANSS.O falls 1.6% to $338.02 premarket
** China's market regulator has postponed approval of a proposed SNPS and ANSS deal, the Financial Times reports
** SNPS said last year it would buy ANSS in a $35 billion cash-and-stock deal
** Transaction was expected to close in the first half of this year
** Washington's move to ban chip design software sales by U.S. companies to China contributed to the delay - report
** Synopsys declined to comment on the report; Ansys and the Chinese regulator did not immediately respond to Reuters' requests for comment
** SNPS and its rival Cadence Design Systems CDNS.O said last month they received letters from U.S. Department of Commerce's Bureau of Industry and Security regarding new export curbs on sales to China
** As of last close, SNPS and ANSS each up ~2% YTD
(Reporting by Jaspreet Singh in Bengaluru)
((Jaspreet.Singh@thomsonreuters.com ; https://twitter.com/i_jass))