Previous Next AMTD Digital falls 79% as trading volume wanes after a massive surge briefly valued the Chinese tech firm at over $400 billion Business Insider India 2 hours ago Matthew Fox © Spencer Platt/Getty Images AMTD Digital falls 79% as trading volume wanes after a massive surge briefly valued the Chinese tech firm at over $400 billion Shares of high-flying AMTD Digital fell as much as 79% over the past two days as trading volume declined. The obscure Chinese-tech firm was briefly worth more than $400 billion after the stock surged on no news. The thinly traded stock saw…