High-rolling investors have positioned themselves bullish on Pan American Silver (NYSE:PAAS), 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 PAAS often signals that someone has privileged information.Today, Benzinga's options scanner spotted 12 options trades for Pan American Silver. This is not a typical pattern.The se ...