The growth of altcoins is explained by several factors.
Firstly, the improvement in sentiment in the cryptocurrency market: the rise of Bitcoin often stimulates interest in alternative assets.
Secondly, news about technological updates, partnerships, or the addition of altcoins to large exchanges increases their liquidity and demand.
The third factor is the development of DeFi and NFT, where many altcoins play a key role. Speculation and hype on social media also push prices up, especially for "meme coins".
Finally, unique values such as transaction speed or smart contracts make altcoins attractive. All of this together creates an "altcoin season" when their growth outpaces Bitcoin.