Bluebird Bio (BLUE) has a bullish outlook from Barclays analyst Gena Wang, who recently raised the price target to $40 from $2, citing significant valuation adjustments and strategic restructuring, including a reverse stock split. The stock's potential upside is driven by the improved financial model and growth prospects of key products like Skysona and Zynteglo. However, trading is currently halted pending news, which could introduce additional volatility.