Bloomberg Walmart Inc and Kroger Co are boosting the price of a popular at-home Covid-19 test after a deal with the White House to sell the kits at cost expired. The price of BinaxNOW tests at Walmart is rising to $19.88 this week from $14, the company said in an email Tuesday. Kroger said it reinstated “retail pricing” after …

  Bloomberg China’s tech stocks fall once again on Wednesday as firms backed by Tencent Holdings Ltd. came under pressure after it pared investment in the cohort for a second time in two weeks. The Hang Seng Tech Index fell 4.6% — the most since July — in a third straight day of declines, with overnight weakness in US peers …

  Bloomberg Warren Buffett’s Berkshire Hathaway Inc is planning a potential return to the yen bond market, just as a drop in the Japanese currency versus the greenback makes investments in nation’s companies more attractive. The US company has mandated banks for a potential benchmark yen-denominated bond offering. The deal may come in the near future, subject to market conditions. …