The initiation of coverage by Mizuho with a Buy rating and a significant price target suggests a strong bullish outlook for HGV. The detailed analysis by the analyst, including expected revenue synergies from the Bluegreen transaction and the strategic shift to selling more owned inventory, which carries higher EBITDA per transaction, provides a solid foundation for expecting a positive short-term impact on HGV's stock price. Additionally, the stock's positive price action following the announcement further supports this outlook.