The most closely watched and market-influencing research ratings from Wall Street are now compiled in one place. Below are the research rating changes that investors need to know today, organized by The Fly.

Five major increases:

• Oppenheimer has upgraded the rating of AMD ( AMD ) from "flat" to "outperforming the market", with a target price of $600. The firm stated that it has once again delivered a positive financial report.
• Rothschild and Co Redburn have upgraded the rating of Airbnb ( ABNB ) from "sell" to "neutral", and raised the target price from $135 to $190. The firm stated that earlier this year, it did not notice that the "behind-the-scenes" efforts of Airbnb had already laid the foundation for accelerating its core business.
• JPMorgan has upgraded the rating of Tronox ( TROX ) from "reduce holdings" to "neutral", without providing a target price. The reason for the upgrade is valuation, but it also stated that the operating environment of Tronox remains "full of uncertainties and negative".
• Jefferies has upgraded the rating of TripAdvisor ( TRIP ) from "underperforming the market" to "hold", and lowered the target price from $8 to $7. Jefferies indicates that the valuation of TripAdvisor is "lower than that of its peers", as well as the potential catalytic factors brought about by increased participation from aggressive investors, which may make the risk-return ratio more balanced at the current stock price level.
• JPMorgan has upgraded the rating of Unum Group ( UNM ) from "Neutral" to "Overweight", and lowered the target price from $98 to $90. The firm states that even after lowering its estimates, the risk-return profile of Unum remains attractive, as stable employment and wage trends should support the business.

Five major downgrades:

• JPMorgan has downgraded its rating of DraftKings ( DKNG ) from 'Overweight' to 'Neutral', reduced the target price from $30 to $21, and removed the stock from the analyst's list of key focuses. The firm stated that after releasing the third-quarter earnings, it has less confidence in DraftKings's EBITDA for 2027 and 2028. UBS and Stifel have also downgraded DraftKings to a Neutral rating.
• KeyBanc downgraded the rating of Zillow Group ( ZG ) from "Overweight" to "Industry Weight", without providing a target price. The reason for the downgrade is that the company's third-quarter performance was weaker than expected, as well as a "significant reset of the forward outlook".
• Aletheia downgraded the rating of Nvidia ( NVDA ) from "Buy" to "Hold", without providing a target price. The reason for the downgrade includes risks related to Nvidia's new AI calculation partnership plan, as well as "potential turmoil" in the context of the investigation into the company's CEO.
• Rothschild and Co Redburn have downgraded their rating of TransUnion ( TRU ) from "Buy" to "Neutral", and raised the target price from $89 to $91. They remain optimistic about the long-term growth and profit margin expansion opportunities of TransUnion, but indicate that the company's third-quarter report has raised some short-term concerns.
• JPMorgan has downgraded the rating of Molson Coors ( TAP ) from "Neutral" to "Reduce Holdings", and lowered the target price from $41 to $37. The firm stated that the continuous weakness in the US beer category, the competitive environment in the UK, and the pressure of increasing costs exceeding cost savings have led to a significant downgrade of the forecast, "painting a difficult picture that continues until 2027".