According to @ai_9684xtpa, a trader capitalized on low Ethereum mainnet gas fees to make quick profits. The trader bought 5,093 ETH at an average price of $2,376 around 8 hours ago and sold them in 36 transactions over the past 40 minutes at an average price of $2,406. This resulted in a profit of $150,000 from an initial investment of $12.1 million.