| 2024-08-08 | Daiwa Capital | “Neutral” → “Outperform” upgrade |
| 2024-03-22 | Argus Research | “Buy” → “Hold” downgrade |
| 2024-01-04 | TD Cowen | “Outperform” → “Market Perform” downgrade |
| 2023-10-16 | Jefferies | “Hold” → “Buy” upgrade |
| 2023-06-29 | Credit Suisse | “Outperform” → “Neutral” downgrade |
| 2023-05-11 | Daiwa Capital | “Outperform” → “Neutral” downgrade |
| 2023-02-07 | Daiwa Capital | “Neutral” → “Outperform” upgrade |
| 2023-01-26 | UBS | “Buy” → “Neutral” downgrade |
| 2023-01-17 | Wells Fargo | “Overweight” → “Equal Weight” downgrade |
| 2023-01-04 | Bank of America | “Buy” → “Neutral” downgrade |
| 2022-12-13 | Goldman Sachs | “Neutral” → “Buy” upgrade |
| 2022-01-05 | Bank of America | “Neutral” → “Buy” upgrade |
| 2021-12-13 | UBS | “Neutral” → “Buy” upgrade |
| 2021-05-06 | Mizuho | “Buy” → “Neutral” downgrade |
| 2021-02-04 | DZ Bank | “Hold” → “Buy” upgrade |
| 2020-12-16 | RBC Capital | “Outperform” → “Sector Perform” downgrade |
| 2020-11-10 | Bernstein | “Market Perform” → “Perform” revised |
| 2020-10-12 | Atlantic Equities | “Overweight” → “Neutral” downgrade |
| 2020-06-16 | Leerink Partners | “Market Perform” → “Perform” revised |
| 2019-08-28 | DZ Bank | “Sell” → “Hold” upgrade |
| 2019-07-30 | Bank of America | “Buy” → “Neutral” downgrade |
| 2019-07-30 | Morgan Stanley | “Overweight” → “Equal Weight” downgrade |
| 2019-01-31 | Argus Research | “Neutral” → “Outperform” upgrade |
| 2019-01-31 | Credit Suisse | “Neutral” → “Outperform” upgrade |
| 2019-01-23 | UBS | “Buy” → “Neutral” downgrade |
| 2018-12-11 | J.P. Morgan | “Overweight” → “Neutral” downgrade |
| 2018-11-01 | BMO Capital | “Outperform” → “Market Perform” downgrade |
| 2018-04-05 | Barclays | “Overweight” → “Equal Weight” downgrade |
| 2017-09-20 | Morgan Stanley | “Equal Weight” → “Overweight” upgrade |
| 2017-08-02 | BMO Capital | “Market Perform” → “Outperform” upgrade |
| 2017-07-20 | Credit Suisse | “Outperform” → “Neutral” downgrade |
| 2017-05-16 | Citigroup | “Neutral” → “Sell” downgrade |
| 2016-11-29 | Barclays | “Equal Weight” → “Overweight” upgrade |
| 2016-11-02 | Argus Research | “Buy” → “Hold” downgrade |
| 2016-11-02 | BMO Capital | “Outperform” → “Market Perform” downgrade |
| 2016-10-13 | Jefferies | “Buy” → “Hold” downgrade |
| 2015-11-25 | Truist | “Reduce” → “Neutral” upgrade |
| 2015-10-20 | TD Cowen | “Market Perform” → “Outperform” upgrade |
| 2015-10-02 | Morgan Stanley | “Equal Weight” → “Overweight” upgrade |
| 2015-02-09 | BMO Capital | “Market Perform” → “Outperform” upgrade |
| 2014-07-28 | BMO Capital | “Outperform” → “Market Perform” downgrade |
| 2014-02-04 | Jefferies | “Hold” → “Buy” upgrade |
| 2014-01-10 | TD Cowen | “Outperform” → “Market Perform” downgrade |
| 2013-11-14 | LBBW Research | “Hold” → “Buy” upgrade |
| 2013-07-12 | Jefferies | “Buy” → “Hold” downgrade |
| 2013-07-02 | Standpoint Research | “Hold” → “Sell” downgrade |
| 2012-11-27 | MKM Partners | “Buy” → “Neutral” downgrade |