SINGAPORE - A-Sonic Aerospace's stock surged 13 per cent yesterday to a recent high, prompting a query from the Singapore Exchange (SGX). The company, which is on the SGX Watchlist, responded that it did not know why its stock price had leapt to 64 cents before closing up seven cents, or 13 per cent, at 60.5 cents. A-Sonic said in a statement after the market's close that it was not aware "of any information not previously announced concerning the company, its subsidiaries or associated companies which, if known, might explain the trading". However, it suggested that interest in the stock could have been fanned by the company's strong and steady financial performance and dividend payout: "After evaluation and assessment, the market might have particularly taken into consideration the following in our results." On March 2, A-Sonic announced it had chalked up a net profit of $8.71 million for the year ended Dec 31. Its stock has risen about 60 per cent since then. The company was profitable in the two prior years as well. Net profit was $3.45 million in the 12 months to Dec 31, 2019, and $1.99 million in 2018. The company has paid dividends in the past three years. A-Sonic's net tang...