Deep-pocketed investors have adopted a bearish approach towards T-Mobile US (NASDAQ:TMUS), 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 TMUS 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 T-Mobile US. This level of activity is out of the ordinary. The general mood among these heav…