The analyst discusses a Bitcoin crash due to a whale selling 24,000 BTC, causing a $4,000 crash in minutes. BTC dropped from $114,000 to $110,000 in 15 minutes. Ethereum almost hit $5,000 but dropped to $4,700. Bitcoin dominance has been declining for two months and has reached 57%. The analyst suggests this often precedes an altcoin rally. Last year, Bitcoin dominance dropped 11% which led to an XRP rally. He suggests having a position in altcoins and Ethereum before a strong altcoin season begins. He mentions that historical data suggests September is a down month for Bitcoin, followed by rallies in October, November, and December. The analyst also mentions the importance of being aware of liquidation levels and avoiding heavy leverage.