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Thomas Diffely's Stock Ratings
DA Davidson Analyst
Thomas Diffely is an analyst at DA Davidson. 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
15.8%
Smart Score
Overall Average Return Percentile
70th
Number of Ratings
116
| Buy Now | Get Alert | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 12/11/2025 | PLAB | Buy Now | Photronics | $36.89 | 21.98% | $30 → $45 | Maintains | Buy | Get Alert | |
| 11/21/2025 | KLIC | Buy Now | Kulicke & Soffa Indus | $47.78 | 15.11% | $55 → $55 | Maintains | Buy | Get Alert | |
| 11/04/2025 | ICHR | Buy Now | Ichor Holdings | $17.78 | 68.73% | $35 → $30 | Maintains | Buy | Get Alert | |
| 10/28/2025 | AMKR | Buy Now | Amkor Tech | $44.14 | -9.38% | $30 → $40 | Maintains | Buy | Get Alert | |
| 10/02/2025 | ACLS | Buy Now | Axcelis Technologies | $85.42 | 28.78% | $90 → $110 | Maintains | Buy | Get Alert | |
| 09/23/2025 | PDFS | Buy Now | PDF Solutions | $30.30 | -20.79% | $24 → $24 | Maintains | Buy | Get Alert | |
| 08/06/2025 | ACLS | Buy Now | Axcelis Technologies | $85.42 | 5.36% | $75 → $90 | Maintains | Buy | Get Alert | |
| 08/06/2025 | ICHR | Buy Now | Ichor Holdings | $17.78 | 96.85% | $45 → $35 | Maintains | Buy | Get Alert | |
| 05/29/2025 | PLAB | Buy Now | Photronics | $36.89 | -18.68% | $35 → $30 | Maintains | Buy | Get Alert | |
| 05/08/2025 | KLIC | Buy Now | Kulicke & Soffa Indus | $47.78 | 15.11% | $60 → $55 | Maintains | Buy | Get Alert | |
| 05/06/2025 | ICHR | Buy Now | Ichor Holdings | $17.78 | 153.09% | $50 → $45 | Maintains | Buy | Get Alert | |
| 04/29/2025 | AMKR | Buy Now | Amkor Tech | $44.14 | -32.03% | $36 → $30 | Maintains | Buy | Get Alert | |
| 04/14/2025 | PDFS | Buy Now | PDF Solutions | $30.30 | -20.79% | $36 → $24 | Maintains | Buy | Get Alert | |
| 12/12/2024 | PLAB | Buy Now | Photronics | $36.89 | -5.12% | $32 → $35 | Maintains | Buy | Get Alert | |
| 11/15/2024 | KLIC | Buy Now | Kulicke & Soffa Indus | $47.78 | 25.58% | $65 → $60 | Maintains | Buy | Get Alert | |
| 10/29/2024 | AMKR | Buy Now | Amkor Tech | $44.14 | -18.44% | $40 → $36 | Maintains | Buy | Get Alert | |
| 09/26/2024 | ICHR | Buy Now | Ichor Hldgs | $17.78 | 181.21% | → $50 | Initiates | → Buy | Get Alert | |
| 08/28/2024 | PDFS | Buy Now | PDF Solutions | $30.30 | 38.61% | $42 → $42 | Maintains | Buy | Get Alert | |
| 07/15/2024 | ACLS | Buy Now | Axcelis Technologies | $85.42 | 104.87% | $150 → $175 | Maintains | Buy | Get Alert | |
| 05/28/2024 | PDFS | Buy Now | PDF Solutions | $30.30 | 38.61% | $40 → $42 | Maintains | Buy | Get Alert | |
| 05/03/2024 | ACLS | Buy Now | Axcelis Technologies | $85.42 | 75.6% | $175 → $150 | Maintains | Buy | Get Alert | |
| 04/30/2024 | AMKR | Buy Now | Amkor Tech | $44.14 | -9.38% | $35 → $40 | Maintains | Buy | Get Alert | |
| 02/16/2024 | PDFS | Buy Now | PDF Solutions | $30.30 | 32.01% | $42 → $40 | Maintains | Buy | Get Alert | |
| 11/02/2023 | ACLS | Buy Now | Axcelis Technologies | $85.42 | 104.87% | $225 → $175 | Maintains | Buy | Get Alert | |
| 10/25/2023 | PDFS | Buy Now | PDF Solutions | $30.30 | 38.61% | $48 → $42 | Maintains | Buy | Get Alert | |
| 08/09/2023 | PDFS | Buy Now | PDF Solutions | $30.30 | 58.42% | $45 → $48 | Maintains | Buy | Get Alert | |
| 08/01/2023 | AMKR | Buy Now | Amkor Tech | $44.14 | -18.44% | $32 → $36 | Maintains | Buy | Get Alert | |
| 05/10/2023 | PDFS | Buy Now | PDF Solutions | $30.30 | 48.51% | $40 → $45 | Maintains | Buy | Get Alert | |
| 05/02/2023 | AMKR | Buy Now | Amkor Tech | $44.14 | -27.5% | $35 → $32 | Maintains | Buy | Get Alert | |
| 03/16/2023 | LIDR | Buy Now | AEye | $2.25 | -55.56% | $5 → $1 | Downgrade | Buy → Neutral | Get Alert | |
| 02/10/2023 | ONTO | Buy Now | Onto Innovation | $156.44 | -39.27% | $90 → $95 | Maintains | Buy | Get Alert | |
| 01/11/2023 | ACLS | Buy Now | Axcelis Technologies | $85.42 | 22.92% | $88 → $105 | Maintains | Buy | Get Alert | |
| 10/20/2022 | LRCX | Buy Now | Lam Research | $166.04 | 125.85% | $400 → $375 | Maintains | Neutral | Get Alert | |
| 10/17/2022 | FORM | Buy Now | FormFactor | $55.50 | -27.93% | $45 → $40 | Maintains | Buy | Get Alert | |
| 10/17/2022 | KLIC | Buy Now | Kulicke & Soffa Indus | $47.78 | 15.11% | $70 → $55 | Maintains | Buy | Get Alert | |
| 08/31/2022 | PLAB | Buy Now | Photronics | $36.89 | -24.1% | $30 → $28 | Maintains | Buy | Get Alert | |
| 08/19/2022 | AMAT | Buy Now | Applied Mat | $262.93 | -41.05% | $170 → $155 | Maintains | Buy | Get Alert | |
| 07/27/2022 | TER | Buy Now | Teradyne | $195.54 | -38.63% | $145 → $120 | Maintains | Buy | Get Alert | |
| 06/30/2022 | AMKR | Buy Now | Amkor Tech | $44.14 | -32.03% | → $30 | Initiates | → Buy | Get Alert | |
| 05/26/2022 | PLAB | Buy Now | Photronics | $36.89 | -18.68% | $26 → $30 | Maintains | Buy | Get Alert | |
| 05/20/2022 | AMAT | Buy Now | Applied Mat | $262.93 | -35.34% | $185 → $170 | Maintains | Buy | Get Alert | |
| 05/16/2022 | LIDR | Buy Now | AEye | $2.25 | 433.33% | $15 → $12 | Maintains | Buy | Get Alert | |
| 11/11/2021 | LIDR | Buy Now | AEye | $2.25 | 566.67% | → $15 | Initiates | → Buy | Get Alert | |
| 11/05/2021 | NPTN | Buy Now | NeoPhotonics | — | — | $15 → $16 | Downgrade | Buy → Neutral | Get Alert | |
| 10/07/2021 | TER | Buy Now | Teradyne | $195.54 | -28.4% | $135 → $140 | Upgrade | Neutral → Buy | Get Alert | |
| 06/10/2021 | NBA | Buy Now | New Beginnings Acq | — | — | → $20 | Initiates | → Buy | Get Alert | |
| 06/04/2021 | FORM | Buy Now | FormFactor | $55.50 | — | — | Upgrade | Neutral → Buy | Get Alert | |
| 04/07/2021 | AMAT | Buy Now | Applied Mat | $262.93 | -37.25% | $145 → $165 | Maintains | Buy | Get Alert | |
| 04/01/2021 | ONTO | Buy Now | Onto Innovation | $156.44 | -48.86% | $75 → $80 | Maintains | Buy | Get Alert | |
| 03/09/2021 | NPTN | Buy Now | NeoPhotonics | — | — | $11 → $15 | Upgrade | Neutral → Buy | Get Alert | |
| 02/17/2021 | IPGP | Buy Now | IPG Photonics | $77.80 | 285.63% | $210 → $300 | Maintains | Buy | Get Alert | |
| 02/10/2021 | IIVI | Buy Now | II-VI | — | — | $60 → $115 | Maintains | Buy | Get Alert | |
| 01/29/2021 | TER | Buy Now | Teradyne | $195.54 | -30.96% | $155 → $135 | Maintains | Neutral | Get Alert | |
| 01/26/2021 | FORM | Buy Now | FormFactor | $55.50 | -9.91% | $36 → $50 | Downgrade | Buy → Neutral | Get Alert | |
| 01/26/2021 | AMAT | Buy Now | Applied Mat | $262.93 | — | — | Upgrade | Neutral → Buy | Get Alert | |
| 10/22/2020 | TER | Buy Now | Teradyne | $195.54 | -48.86% | $90 → $100 | Maintains | Neutral | Get Alert | |
| 06/23/2020 | ICHR | Buy Now | Ichor Hldgs | $17.78 | 96.85% | → $35 | Upgrade | Neutral → Buy | Get Alert | |
| 06/18/2020 | MKSI | Buy Now | MKS Instruments | $159.06 | -5.7% | → $150 | Upgrade | Neutral → Buy | Get Alert | |
| 06/01/2020 | FORM | Buy Now | FormFactor | $55.50 | -45.95% | $25 → $30 | Upgrade | Neutral → Buy | Get Alert | |
| 04/02/2020 | MKSI | Buy Now | MKS Instruments | $159.06 | -46.56% | → $85 | Downgrade | Buy → Neutral | Get Alert | |
| 04/02/2020 | FORM | Buy Now | FormFactor | $55.50 | -62.16% | $31 → $21 | Downgrade | Buy → Neutral | Get Alert | |
| 04/02/2020 | ACLS | Buy Now | Axcelis Technologies | $85.42 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 04/02/2020 | AMAT | Buy Now | Applied Mat | $262.93 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 01/24/2020 | TER | Buy Now | Teradyne | $195.54 | -63.18% | $60 → $72 | Maintains | Neutral | Get Alert | |
| 12/13/2019 | FORM | Buy Now | FormFactor | $55.50 | -49.55% | $25 → $28 | Reiterates | → Buy | Get Alert | |
| 12/05/2019 | ACLS | Buy Now | Axcelis Technologies | $85.42 | -64.88% | → $30 | Initiates | → Buy | Get Alert | |
| 11/21/2019 | KLIC | Buy Now | Kulicke & Soffa Indus | $47.78 | — | — | Upgrade | Neutral → Buy | Get Alert | |
| 11/15/2019 | AMAT | Buy Now | Applied Mat | $262.93 | -79.08% | $45 → $55 | Maintains | Neutral | Get Alert | |
| 10/24/2019 | ICHR | Buy Now | Ichor Hldgs | $17.78 | — | — | Upgrade | Neutral → Buy | Get Alert | |
| 07/08/2019 | KLIC | Buy Now | Kulicke & Soffa Indus | $47.78 | -45.58% | $30 → $26 | Downgrade | Buy → Neutral | Get Alert | |
| 07/08/2019 | ICHR | Buy Now | Ichor Hldgs | $17.78 | 40.61% | $32 → $25 | Downgrade | Buy → Neutral | Get Alert | |
| 07/08/2019 | AMAT | Buy Now | Applied Mat | $262.93 | -82.89% | $55 → $45 | Downgrade | Buy → Neutral | Get Alert | |
| 03/08/2019 | ICHR | Buy Now | Ichor Hldgs | $17.78 | 68.73% | → $30 | Initiates | → Buy | Get Alert | |
| 05/08/2018 | XCRA | Buy Now | Xcerra | — | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 04/26/2018 | TER | Buy Now | Teradyne | $195.54 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 04/05/2018 | CDNS | Buy Now | Cadence Design Sys | $320.80 | — | — | Upgrade | Neutral → Buy | Get Alert | |
| 03/15/2018 | IIVI | Buy Now | II-VI | — | — | → $55 | Initiates | → Buy | Get Alert | |
| 02/23/2018 | XCRA | Buy Now | Xcerra | — | — | — | Upgrade | Neutral → Buy | Get Alert | |
| 11/15/2017 | KLIC | Buy Now | Kulicke & Soffa Indus | $47.78 | -26.75% | $25 → $35 | Maintains | Buy | Get Alert | |
| 05/04/2017 | QRVO | Buy Now | Qorvo | $88.19 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 04/25/2017 | CDNS | Buy Now | Cadence Design Sys | $320.80 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 04/11/2017 | XCRA | Buy Now | Xcerra | — | — | $12 → $10.25 | Downgrade | Buy → Neutral | Get Alert | |
| 10/10/2016 | CDNS | Buy Now | Cadence Design Sys | $320.80 | — | — | Upgrade | Neutral → Buy | Get Alert | |
| 04/06/2016 | AMAT | Buy Now | Applied Mat | $262.93 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 04/06/2016 | CDNS | Buy Now | Cadence Design Sys | $320.80 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 09/21/2015 | IPGP | Buy Now | IPG Photonics | $77.80 | 41.4% | → $110 | Initiates | → Buy | Get Alert | |
| 04/13/2015 | CDNS | Buy Now | Cadence Design Sys | $320.80 | -93.77% | → $20 | Downgrade | Buy → Neutral | Get Alert | |
| 04/10/2015 | CDNS | Buy Now | Cadence Design Sys | $320.80 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 03/16/2015 | QRVO | Buy Now | Qorvo | $88.19 | 13.39% | $70 → $100 | Upgrade | Neutral → Buy | Get Alert | |
| 10/29/2014 | IPGP | Buy Now | IPG Photonics | $77.80 | 10.55% | $83 → $86 | Maintains | Buy | Get Alert | |
| 10/21/2014 | CDNS | Buy Now | Cadence Design Sys | $320.80 | -93.77% | $21 → $20 | Maintains | Buy | Get Alert | |
| 10/09/2014 | IIVI | Buy Now | II-VI | — | — | → $16 | Upgrade | Neutral → Buy | Get Alert | |
| 04/16/2014 | CDNS | Buy Now | Cadence Design Sys | $320.80 | -94.39% | $17 → $18 | Maintains | Buy | Get Alert | |
| 02/13/2014 | AMAT | Buy Now | Applied Mat | $262.93 | -92.01% | $20 → $21 | Maintains | Buy | Get Alert | |
| 02/11/2014 | PLAB | Buy Now | Photronics | $36.89 | -72.89% | $11 → $10 | Maintains | Buy | Get Alert | |
| 01/31/2014 | MKSI | Buy Now | MKS Instruments | $159.06 | -76.74% | $35 → $37 | Maintains | Buy | Get Alert | |
| 01/30/2014 | CDNS | Buy Now | Cadence Design Sys | $320.80 | -94.7% | $16 → $17 | Maintains | Buy | Get Alert | |
| 01/21/2014 | TER | Buy Now | Teradyne, Inc. | $195.54 | -87.21% | $22 → $25 | Maintains | Buy | Get Alert | |
| 12/13/2013 | IPGP | Buy Now | IPG Photonics | $77.80 | 6.69% | $75 → $83 | Maintains | Buy | Get Alert | |
| 11/15/2013 | AMAT | Buy Now | Applied Mat | $262.93 | -92.39% | → $20 | Maintains | Buy | Get Alert | |
| 09/12/2013 | CDNS | Buy Now | Cadence Design Sys | $320.80 | -95.01% | → $16 | Upgrade | Neutral → Buy | Get Alert | |
| 09/12/2013 | CDNS | Buy Now | Cadence Design Sys | $320.80 | -95.01% | → $16 | Upgrade | Neutral → Buy | Get Alert | |
| 08/16/2013 | AMAT | Buy Now | Applied Mat | $262.93 | -93.15% | $15 → $18 | Upgrade | Neutral → Buy | Get Alert | |
| 05/17/2013 | AMAT | Buy Now | Applied Mat | $262.93 | — | — | Downgrade | Buy → Neutral | Get Alert | |
| 03/12/2013 | CDNS | Buy Now | Cadence Design Sys | $320.80 | -95.32% | $17 → $15 | Downgrade | Buy → Neutral | Get Alert | |
| 02/14/2013 | AMAT | Buy Now | Applied Mat | $262.93 | -93.53% | $16 → $17 | Maintains | Buy | Get Alert | |
| 02/11/2013 | AMAT | Buy Now | Applied Mat | $262.93 | -93.91% | $15 → $16 | Maintains | Buy | Get Alert | |
| 01/31/2013 | CDNS | Buy Now | Cadence Design Sys | $320.80 | -94.7% | $15 → $17 | Maintains | Buy | Get Alert | |
| 11/13/2012 | AMAT | Buy Now | Applied Mat | $262.93 | -94.3% | $17 → $15 | Maintains | Buy | Get Alert | |
| 11/02/2012 | FORM | Buy Now | FormFactor | $55.50 | -81.98% | $12 → $10 | Maintains | Buy | Get Alert | |
| 10/23/2012 | MKSI | Buy Now | MKS Instruments | $159.06 | -74.85% | $35 → $40 | Maintains | Buy | Get Alert | |
| 07/05/2012 | TER | Buy Now | Teradyne | $195.54 | -86.7% | → $26 | Maintains | Buy | Get Alert | |
| 04/27/2012 | TER | Buy Now | Teradyne | $195.54 | -86.7% | $22 → $26 | Maintains | Buy | Get Alert | |
| 04/26/2012 | CDNS | Buy Now | Cadence Design Systems | $320.80 | -95.32% | $14 → $15 | Maintains | Buy | Get Alert | |
| 04/24/2012 | MKSI | Buy Now | MKS Instruments | $159.06 | -74.85% | → $40 | Maintains | Buy | Get Alert | |
| 04/09/2012 | FORM | Buy Now | FormFactor | $55.50 | -78.38% | → $12 | Initiates | → Buy | Get Alert |
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