High-rolling investors have positioned themselves bearish on Quanta Services (NYSE:PWR), and it's important for retail traders to take note.\This activity came to our attention today through Benzinga's tracking of publicly available options data. The identities of these investors are uncertain, but such a significant move in PWR often signals that someone has privileged information.Today, Benzinga's options scanner spotted 8 options trades for Quanta Services. This is not a typical pattern.The sentiment amo ...