Stocks of primary aluminium at Japan's major ports were 227,700t at the end of June, according to an estimate from local trade house Marubeni.
The figure represents a modest 5.4% rise from stocks of 216,100t at the end of May, which is being attributed to a combination of delayed shipments arriving last month and soft local demand.
Mill product shipments in Japan - a rough proxy for demand - fell year-on-year in the last three reported months (Mar-May 07).
Despite that Japanese port stocks are still low by recent historical standards, particularly relative to 2005, when they were consistently close to or above the 300,000t mark
.