Deep-pocketed investors have adopted a bullish approach towards BlackRock (NYSE: BLK), and it's something market players shouldn't ignore. Our tracking of public options records at Benzinga unveiled this significant move today. The identity of these investors remains unknown, but such a substantial move in BLK usually suggests something big is about to happen.We gleaned this information from our observations today when Benzinga's options scanner highlighted 9 extraordinary options activities for BlackRock. ...