Indonesia’s rupiah fell to 18,010 per U.S. dollar, its weakest level since August 4, breaching 18,000 for the first time in nearly two months as rising global bond yields, higher oil prices and U.S.-Iran tensions pressured Asian currencies. The 10-year U.S. Treasury yield rose above 5.27%, a 19-year high, while the dollar held near a two-month peak. Jakarta’s benchmark stock index fell as much as 2.2% after a new Indonesia Stock Exchange rule took effect, reducing the minimum share-trading price to 1 rupiah from 50. The index was down 94 points, or 1.3%, at 6,064 in Tuesday morning trading, its lowest level since late July, before recovering some losses to stand 0.6% lower at 0745 GMT. The rule was intended to improve liquidity and price discovery after an MSCI downgrade warning in January over transparency and investability concerns; the benchmark had fallen more than 30% this year. Bank Indonesia’s bond-buying and the prospect that suppressed yields could shift adjustment into the currency also weighed on the rupiah. Investors remained cautious ahead of August trade data and September inflation figures, as well as September purchasing managers’ index readings from official and private sources in China. Nearly all sectors declined, with technology, cyclical, transport and energy stocks leading losses, although Bank Rakyat Indonesia and Bank Mandiri rose more than 1%.