Investors with a lot of money to spend have taken a bullish stance on Seagate Tech Hldgs (NASDAQ:STX). And retail traders should know. We noticed this today when the trades showed up on publicly available options history that we track here at Benzinga. Whether this is an institution or just a wealthy individual, we don’t know. But when something this big happens with STX, it often means somebody knows something is about to happen. Today, Benzinga’s options scanner spotted 10 options trades for Seagate Tech Hldgs. This isn’t normal. The overall sentiment of these big-money traders is split betw…