Cameron Winklevoss, billionaire co-founder of Gemini, said on January 1 that Ethereum is the most underpriced cryptocurrency on the board due to its distance from its all-time high (ATH). He looks to have been correct. He said that Ethereum is 50% away from its all-time high at around $1,400 from January 2018. It appears he was right. Ethereum is up 7.63% in the past day, up 62.66% in the past week since his prediction, and reached a high of $1,224 today. There are several key reasons to be optimistic about Ethereum in 2021. Eth 2.0 has launched, which will solve a lot of fee and scale issues over time, and total value locked in defi peaked at $16 billion. If Ethereum gets cheaper to use through Eth 2.0, defi can grow much faster. Lastly, the number of whales accumulating Ethereum has increased, according to Santiment. It appears Ethereum will faces a strong resistance level at $1,000. But above this, there should be little resistance to its record-high of $1,400. Winklevoss said he's had a bag of ETH since around 2016 when Gemini first started listing the #2 cryptocurrency. Ethereum's market cap on January 3 exceeded $100 billion, according to CoinGecko, and now sits at $138 billion as the global cryptocurrency market cap hits $1 trillion.