The meme coin market, valued at $67.4 billion, experienced a surge at the start of October before a sharp decline. BeInCrypto identifies three meme coins with potential for further gains: PUMP, M, and HarryPotterObamaSonic10Inu. PUMP has increased by 66.8% this month, reaching $0.0056, with a new all-time high of $0.0090. M has surged 243% over the past month, currently trading at $2.33, which is 28% below its all-time high. HarryPotterObamaSonic10Inu has risen 44% since the beginning of the month, now at $0.114. However, all three coins could face downside risks if bearish sentiment grows.