Nio stock fell further below key levels Tuesday with Nine (NIO) earnings for the second quarter due early Wednesday. X Nio’s EV deliveries rose 14%, year over year, in Q2. But they slowed in July and August vs. June, so outlook will be key. The once red-hot Chinese EV startup has seen headwinds mount. Those headwinds include new export curbs on Nvidia (NVDA), a Nio chip supplier. It also includes fierce new competition and fresh Covid-19 lockdowns in China. Investors will be keen to learn how Nio is managing through persistent supply challenges while pursuing ambitious growth strategies. The emerging...