The crypto Fear and Greed Indexes are showing increased investor optimism as the market nears a $4 trillion valuation. CoinMarketCap's index has risen to 59 from 51 earlier this month, while Alternative.me's index has climbed to 71. These indexes, which assess market sentiment through metrics such as price momentum, volatility, social trends, and trading volume, suggest a shift from fear to greed. Although not yet in 'extreme greed' territory, the trend indicates growing confidence among investors and hints at potential market overheating.