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Matthew O'Brien's Stock Ratings
Piper Sandler Analyst
Matthew O'Brien is an analyst at Piper Sandler. Analyst ratings are quantitative and qualitative analysis of a stock by Wall Street stock rating analysts. Stock ratings consist of expected future growth, current stock valuation and macroeconomic trends. Updated 12/15/2025
Updated: Dec 15, 2025
Overall Average Return
10.1%
Smart Score
Overall Average Return Percentile
58th
Number of Ratings
36
| Buy Now | Get Alert | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 07/01/2024 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 24.42% | $140 → $115 | Downgrade | Overweight → Neutral | Get Alert | |
| 05/08/2024 | ATEC | Buy Now | Alphatec Holdings | $19.71 | -13.75% | $19 → $17 | Maintains | Overweight | Get Alert | |
| 01/05/2023 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 40.65% | $120 → $130 | Maintains | Neutral | Get Alert | |
| 08/02/2022 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 29.83% | $130 → $120 | Maintains | Neutral | Get Alert | |
| 05/03/2022 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 40.65% | $110 → $130 | Maintains | Neutral | Get Alert | |
| 03/14/2022 | SPNE | Buy Now | SeaSpine Holdings | — | — | $28 → $21 | Maintains | Overweight | Get Alert | |
| 03/02/2022 | ATEC | Buy Now | Alphatec Holdings | $19.71 | -13.75% | $22 → $17 | Maintains | Overweight | Get Alert | |
| 02/24/2022 | PODD | Buy Now | Insulet | $291.51 | -21.1% | $295 → $230 | Maintains | Neutral | Get Alert | |
| 02/07/2022 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 19.01% | $135 → $110 | Maintains | Neutral | Get Alert | |
| 01/26/2021 | KRMD | Buy Now | KORU Medical Systems | $5.81 | -22.55% | $9 → $4.5 | Downgrade | Overweight → Neutral | Get Alert | |
| 01/08/2021 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 100.15% | $160 → $185 | Maintains | Overweight | Get Alert | |
| 11/05/2020 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 73.1% | → $160 | Maintains | Overweight | Get Alert | |
| 11/02/2020 | AZYO | Buy Now | Aziyo Biologics | — | — | → $20 | Initiates | → Overweight | Get Alert | |
| 10/29/2020 | IART | Buy Now | Integra Lifesciences | $13.47 | 248.92% | $53 → $47 | Maintains | Neutral | Get Alert | |
| 09/21/2020 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 73.1% | → $160 | Maintains | Overweight | Get Alert | |
| 08/04/2020 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 73.1% | → $160 | Maintains | Overweight | Get Alert | |
| 05/11/2020 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 73.1% | $175 → $160 | Maintains | Overweight | Get Alert | |
| 01/07/2020 | IART | Buy Now | Integra Lifesciences | $13.47 | 330.59% | $59 → $58 | Downgrade | Overweight → Neutral | Get Alert | |
| 01/07/2020 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | 83.92% | $140 → $170 | Upgrade | Neutral → Overweight | Get Alert | |
| 08/05/2019 | ATEC | Buy Now | Alphatec Holdings | $19.71 | -64.49% | → $7 | Initiates | → Overweight | Get Alert | |
| 07/27/2018 | BAX | Buy Now | Baxter Intl | $19.53 | 324.99% | $77 → $83 | Maintains | Overweight | Get Alert | |
| 05/24/2018 | ALGN | Buy Now | Align Tech | $162.73 | 99.72% | $300 → $325 | Maintains | Overweight | Get Alert | |
| 03/12/2018 | MOTS | Buy Now | Motus GI Hldgs | $0.00 | 6999900% | → $7 | Initiates | → Overweight | Get Alert | |
| 11/02/2017 | ZBH | Buy Now | Zimmer Biomet Holdings | $92.43 | — | — | Downgrade | Overweight → Neutral | Get Alert | |
| 05/22/2017 | DXCM | Buy Now | DexCom | $65.73 | 18.67% | → $78 | Reinstates | → Overweight | Get Alert | |
| 04/06/2017 | ABMD | Buy Now | Abiomed | — | — | — | Upgrade | Neutral → Overweight | Get Alert | |
| 03/03/2017 | MDXG | Buy Now | MiMedx Group | $7.12 | 40.45% | → $10 | Initiates | → Overweight | Get Alert | |
| 07/02/2015 | SPNE | Buy Now | SeaSpine Holdings Corporation - Common Stock | — | — | → $24 | Initiates | → Overweight | Get Alert | |
| 03/10/2015 | IART | Buy Now | Integra Lifesciences | $13.47 | 397.4% | → $67 | Initiates | → Overweight | Get Alert | |
| 08/15/2013 | IART | Buy Now | Integra Lifesciences | $13.47 | 271.2% | $41 → $50 | Upgrade | Neutral → Overweight | Get Alert | |
| 04/11/2013 | IART | Buy Now | Integra Lifesciences | $13.47 | 204.38% | $46 → $41 | Maintains | Neutral | Get Alert | |
| 04/09/2013 | ABMD | Buy Now | Abiomed | — | — | → $18 | Downgrade | Overweight → Neutral | Get Alert | |
| 02/22/2013 | IART | Buy Now | Integra Lifesciences | $13.47 | 241.5% | $43 → $46 | Maintains | Neutral | Get Alert | |
| 07/30/2012 | IART | Buy Now | Integra Lifesciences | $13.47 | 204.38% | $40 → $41 | Maintains | Neutral | Get Alert | |
| 05/17/2012 | ABMD | Buy Now | Abiomed | — | — | $25 → $27 | Maintains | Overweight | Get Alert | |
| 02/24/2012 | IART | Buy Now | Integra LifeSciences Holdings | $13.47 | 152.41% | $35 → $34 | Maintains | Neutral | Get Alert |
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