Investors with a lot of money to spend have taken a bullish stance on Li Auto (NASDAQ:LI). And retail traders should know. We noticed this today when the positions showed up on publicly available options history that we track here at Benzinga. Whether these are institutions or just wealthy individuals, we don’t know. But when something this big happens with LI, it often means somebody knows something is about to happen. Today, Benzinga’s options scanner spotted 28 options trades for Li Auto. This isn’t normal. The overall sentiment of these big-money traders is split between 53% bullish and 35…