Cardano (ADA) experienced extreme price swings, surging by nearly 20% in the past 24 hours.Bullish momentum could be attributed to the potential listing of ADA on the Gemini exchange.The overall revival of the cryptocurrency sector and a possible dedicated spot ETF launch for ADA in the US also contribute to the price surge.Grayscale's filing and the regulatory review process signify a 70% chance of the ETF going live this year.