Business sentiment at large Japanese manufacturers improved for a second straight quarter, as concerns over U.S. tariff policy have somewhat lessened, according to the Bank of Japan's quarterly tankan survey released Wednesday.

The tankan data show that the business sentiment index for large manufacturers rose to 14, compared to 13 in the previous quarter, matching a market forecast.

The reading for midsized manufacturing companies increased to 12, up from 10, while the figure for smaller companies was unchanged at 1.