High-rolling investors have positioned themselves bullish on Shake Shack (NYSE:SHAK), 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 SHAK often signals that someone has privileged information. Today, Benzinga’s options scanner spotted 9 options trades for Shake Shack. This is not a typical pattern. The sentiment among these major traders is split, with 77% bullish and 0% bearish. Among all the options we i…