 While investors remained cautious of the increasing infection rate of the COVID-19 Omicron variant, energy sector-related exchange traded funds strengthened on Tuesday following a rebound in risk appetite. On Tuesday, the ALPS Alerian MLP ETF NYSEArca: AMLP increased 2.5, and the JPMorgan Alerian MLP Index ETN NYSEArca: AMJ advanced 2.2. 