Altcoins are struggling to keep up with Bitcoin's price increase due to a combination of factors. One reason is that Bitcoin's dominance rate or share in the overall crypto market continues to rise, threatening to reverse alternative cryptocurrencies' (altcoins) rally from early 2021. As Bitcoin's value increases, investors may rotate out of altcoins and into Bitcoin, causing altcoins to underperform. Additionally, historical data following Bitcoin's second and third halvings illustrates a significant shift in market dynamics where the altcoin market is seen to rise versus Bitcoin. This shift may be due to more miners going offline and the difficulty adjustment getting easier, causing some of the capital to move from Bitcoin to altcoins either as a diversification strategy or because a critical mass of people are using them for something beyond blind speculation.