(Repeats to add Wrapup tag to headline)
SHANGHAI, June 28 (Reuters) - Chinese stocks, on track for their worst month in years, erased early losses on Thursday but the yuan fell again as investors remained anxious about the economic outlook amid the fight with the United States on trade.
The benchmark CSI300 Index and the Shanghai Composite Index both dropped by more than half a percent in early trade. At the midday break, the SSEC was up 0.2 percent and the CSI300 by 0.3 percent.
The Shanghai benchmark has fallen about 9 percent in June, and it is on course for the worst month since January 2016, when it tumbled 22 percent.
The spot yuan market opened at 6.6177 per dollar and was changing hands at 6.6151 as of 0335 GMT, 131 pips or 0.19 percent weaker than the previous late session close.
In each of the past six days, the yuan has slid, taking it to the lowest levels since December 2017.
The yuan has dropped 3.1 percent in June, more than in any other month since 1994 when China unified the market exchange rate.
“The market volatility in China is being driven by a combination of factors – Sino-U.S. trade tensions, concerns over corporate bond defaults in China and uncertainties to the growth outlook,” Tai Hui, J.P. Morgan Asset Management’s chief market strategist for Asia-Pacific said in a note.
“Worries over corporate bond defaults are arguably the most dominant factor at this point, since the prospects of higher USD interest rates and subsequent USD strength are raising concerns that companies who have been heavy USD debt issuers could face challenges to service their debt, repay or refinance.”
Chinese 10-year treasury futures for September delivery , the most traded contract, were 0.18 percent higher on Thursday.
A government think-tank report that appeared briefly online said that China should be wary of any financial panic stemming from uncertainties, such as bond defaults, tight liquidity and trade frictions with the United States. (Reporting by John Ruwitch, Samuel Shen, Winni Zhou and Andrew Galbraith; Editing by Richard Borsuk)