Whale investors have accumulated 300 million ADA worth nearly $200 million as Cardano's price dropped 20% this week.Cardano's price movement has been linked to Bitcoin's decline, influenced by global economic uncertainty and trade tensions.ADA has dropped 1.4% in the last 24 hours and 14.4% over the past week, but a rebound may occur if Bitcoin stages a recovery.Cardano's key support level is $0.62, and if whale accumulation continues, ADA may attempt to break the $0.70 resistance.