Upgrades by analysts, especially with significant price target adjustments, typically lead to positive short-term price movements. The upgrade from 'Market Perform' to 'Outperform' and the substantial increase in the price target from $49 to $68 suggest a strong bullish outlook on Jackson Finl by Keefe, Bruyette & Woods. This is likely to generate investor optimism and could drive the stock price up in the short term.