The 'Fear & Greed Index' for cryptocurrencies has jumped to 65, indicating a shift from neutral to greedy sentiment in the market. The index, published by crypto data provider Alternative, ranges from 0-100, with 0 representing extreme fear and 100 representing extreme greed. The index is calculated using a variety of factors, including volatility, trading volume, social media sentiment, surveys, Bitcoin's market cap dominance, and Google Trends. The recent increase in the index is likely due to a combination of factors, including a decrease in volatility, an increase in trading volume, and positive sentiment on social media. This surge in greed comes after a period of extreme fear in the crypto market, with the index reaching as low as 8 in June 2022. The shift to greed indicates that investors are becoming more confident in the future prospects of cryptocurrencies. However, it is important to note that the index is based on sentiment, and sentiment can change quickly. Investors should be aware of the risks involved in investing in cryptocurrencies and should only invest what they can afford to lose.