According to Deep Tide TechFlow, on December 3rd, Coinmarketcap data showed that the Altcoin Season Index has surpassed its annual high, currently reported at 83.
The CMC Altcoin Season Index is used to determine whether the market is in a season dominated by altcoins. Data shows that in the past 90 days, 83 of the top 100 cryptocurrencies by market capitalization have outperformed Bitcoin.