Analysis of speculative bubbles in cryptocurrencies: Altcoin examples

Cryptocurrencies have emerged as a groundbreaking innovation in the global financial world, bringing decentralisation and blockchain technology. However, the volatility and speculative nature of these assets have led to the formation of speculative bubbles, especially among altcoins. This study examines the dynamics and characteristics of speculative bubbles in the altcoin market, focusing on key examples to identify patterns and contributing factors. The altcoins used in the study are Ankr, Avax, Chainlink, Doge, Fetch.ai, Filecoin, Mana, Render, Sandbox, Shiba, and 10 data sets. Generalised Sup Augmented Dickey Fuller (GSADF) method is used to test for the presence of a speculative bubble. The results show that all altcoins are open to speculative bubble and speculative movements.