Sina Finance 27, according to a report released by Wall Street investment bank Cowen on Thursday, although the weather conditions are generally favorable, but in the last shopping window in December, U. S. retail passenger flow is expected to remain weak.

The outlook for Cowen's US retail team is that US retail passenger traffic fell 7 per cent to 9 per cent in the fourth week of December from a year earlier, compared with an increase of 5.6 per cent a year earlier.

Analyst Oliver Chen Chen wrote: "the fourth week of December will be generally warmer than last year, which is a positive factor for last-minute holiday shopping."

Mr Cowen said retail traffic was also bad the week before, falling 11 per cent year-on-year in the week to December 21 and 9.4 per cent in the same period last year.