Cardano analyst Dan Gambardello has identified two crucial resistance levels for ADA in October: $0.87 and $1.25. ADA, currently trading at $0.856, has struggled to surpass the $0.87 mark, while the $1.25 level is seen as a significant 'bull market door.' Breaking these levels could indicate a bullish shift for Cardano. Gambardello and other analysts have projected that ADA could potentially reach $6.25 or even $10.025 if it overcomes these resistances.