Altcoin Meaning: What It Is and Why Altcoins Are Sliding

Coins Money (altcoin meaning)

The altcoin meaning is simple: any crypto that isn’t Bitcoin, now 40.04% of the market. CoinGecko data puts Bitcoin dominance at 59.96% today. That means every other coin combined, from Ethereum to Dogecoin to dollar stablecoins, adds up to roughly $1.02 trillion of a $2.54 trillion market, and over the past 30 days most of the big ones have fallen two to three times harder than Bitcoin.

Crypto Market This Week: Bitcoin Holds $75K as Altcoins Slide

Gold-coloured physical bitcoin coin resting on a silver laptop keyboard (crypto market this week)

Bitcoin sat at $75,734 on November 8, 2026, down 2.62% in seven days, and most big altcoins fell harder. That is the crypto market this week in one line, based on CoinGecko data: BTC also lost 7.86% over 30 days, and its share of the market rose to 59.32% as money either left crypto or moved into Bitcoin.