High-rolling investors have positioned themselves bullish on Jumia Technologies (NYSE:JMIA), 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 JMIA often signals that someone has privileged information. Today, Benzinga’s options scanner spotted 15 options trades for Jumia Technologies. This is not a typical pattern. The sentiment among these major traders is split, with 66% bullish and 26% bearish. Among all …