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Paul Silverstein's Stock Ratings
TD Cowen Analyst
Paul Silverstein is an analyst at TD Cowen. 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
8.79%
Smart Score
Overall Average Return Percentile
54th
Number of Ratings
52
| Buy Now | Get Alert | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 04/21/2023 | CALX | Buy Now | Calix | $54.16 | 45.86% | $78 → $79 | Maintains | Outperform | Get Alert | |
| 04/20/2023 | FFIV | Buy Now | F5 | $257.45 | -33.97% | $177 → $170 | Maintains | Outperform | Get Alert | |
| 04/19/2023 | ERIC | Buy Now | Telefonaktiebolaget L M | $9.61 | -27.12% | $8 → $7 | Maintains | Outperform | Get Alert | |
| 02/22/2023 | ADTN | Buy Now | Adtran | $8.38 | 269.93% | $34 → $31 | Maintains | Outperform | Get Alert | |
| 02/16/2023 | CSCO | Buy Now | Cisco Systems | $78.14 | -18.1% | $61 → $64 | Maintains | Outperform | Get Alert | |
| 02/14/2023 | ANET | Buy Now | Arista Networks | $126.64 | 77.68% | $212 → $225 | Maintains | Outperform | Get Alert | |
| 02/09/2023 | COHR | Buy Now | Coherent | $177.57 | -51.01% | $95 → $87 | Maintains | Outperform | Get Alert | |
| 02/03/2023 | CLFD | Buy Now | Clearfield | $30.29 | 276.36% | $141 → $114 | Maintains | Outperform | Get Alert | |
| 01/25/2023 | FFIV | Buy Now | F5 | $257.45 | -31.25% | $187 → $177 | Maintains | Outperform | Get Alert | |
| 01/23/2023 | ERIC | Buy Now | Telefonaktiebolaget L M | $9.61 | -16.71% | $10 → $8 | Maintains | Outperform | Get Alert | |
| 01/17/2023 | ERIC | Buy Now | Telefonaktiebolaget L M | $9.61 | 4.11% | $8 → $10 | Maintains | Outperform | Get Alert | |
| 01/04/2023 | CLFD | Buy Now | Clearfield | $30.29 | 365.5% | → $141 | Initiates | → Outperform | Get Alert | |
| 12/19/2022 | DZSI | Buy Now | DZS | — | — | → $25 | Initiates | → Outperform | Get Alert | |
| 12/13/2022 | ANET | Buy Now | Arista Networks | $126.64 | 67.41% | $203 → $212 | Maintains | Outperform | Get Alert | |
| 11/17/2022 | CSCO | Buy Now | Cisco Systems | $78.14 | -21.93% | $60 → $61 | Maintains | Outperform | Get Alert | |
| 11/01/2022 | ANET | Buy Now | Arista Networks | $126.64 | 60.3% | $163 → $203 | Maintains | Outperform | Get Alert | |
| 10/21/2022 | ERIC | Buy Now | Telefonaktiebolaget L M | $9.61 | -16.71% | $11 → $8 | Maintains | Outperform | Get Alert | |
| 09/02/2022 | CIEN | Buy Now | Ciena | $207.68 | -65.81% | $82 → $71 | Maintains | Outperform | Get Alert | |
| 08/18/2022 | CSCO | Buy Now | Cisco Systems | $78.14 | -23.21% | $58 → $60 | Maintains | Outperform | Get Alert | |
| 08/12/2022 | RKLY | Buy Now | Rockley Photonics Hldgs | — | — | $21 → $14 | Maintains | Outperform | Get Alert | |
| 08/02/2022 | ANET | Buy Now | Arista Networks | $126.64 | 28.72% | $154 → $163 | Maintains | Outperform | Get Alert | |
| 07/27/2022 | CALX | Buy Now | Calix | $54.16 | 31.09% | $48 → $71 | Maintains | Outperform | Get Alert | |
| 07/26/2022 | FFIV | Buy Now | F5 | $257.45 | -19.21% | $212 → $208 | Maintains | Outperform | Get Alert | |
| 06/06/2022 | CIEN | Buy Now | Ciena | $207.68 | -60.52% | $96 → $82 | Maintains | Outperform | Get Alert | |
| 02/17/2022 | CSCO | Buy Now | Cisco Systems | $78.14 | -15.54% | $61 → $66 | Maintains | Outperform | Get Alert | |
| 02/14/2022 | CSCO | Buy Now | Cisco Systems | $78.14 | -21.93% | $64 → $61 | Maintains | Outperform | Get Alert | |
| 09/09/2021 | RKLY | Buy Now | Rockley Photonics Hldgs | — | — | → $22 | Initiates | → Outperform | Get Alert | |
| 08/06/2021 | ADTN | Buy Now | Adtran | $8.38 | 246.06% | → $29 | Upgrade | Market Perform → Outperform | Get Alert | |
| 07/30/2021 | NOK | Buy Now | Nokia | $6.20 | 29.03% | $5 → $8 | Upgrade | Market Perform → Outperform | Get Alert | |
| 05/26/2021 | EMKR | Buy Now | EMCORE | — | — | → $16 | Initiates | → Outperform | Get Alert | |
| 02/10/2021 | IIVI | Buy Now | II-VI | — | — | $86 → $124 | Maintains | Outperform | Get Alert | |
| 02/05/2021 | MSI | Buy Now | Motorola Solns | $360.59 | -40.1% | $183 → $216 | Maintains | Outperform | Get Alert | |
| 06/01/2020 | CIEN | Buy Now | Ciena | $207.68 | -66.78% | $58 → $69 | Maintains | Outperform | Get Alert | |
| 12/20/2019 | FFIV | Buy Now | F5 | $257.45 | -34.36% | $185 → $169 | Maintains | Outperform | Get Alert | |
| 11/06/2018 | CALX | Buy Now | Calix | $54.16 | -74.15% | $6 → $14 | Upgrade | Market Perform → Outperform | Get Alert | |
| 07/23/2018 | IIVI | Buy Now | II-VI | — | — | → $57 | Initiates | → Outperform | Get Alert | |
| 07/11/2018 | MSI | Buy Now | Motorola Solns | $360.59 | — | — | Upgrade | Market Perform → Outperform | Get Alert | |
| 02/22/2018 | AAOI | Buy Now | Applied Optoelectronics | $28.93 | 83.18% | $60 → $53 | Maintains | Outperform | Get Alert | |
| 11/07/2017 | BSFT | Buy Now | BroadSoft | — | — | — | Downgrade | Outperform → Market Perform | Get Alert | |
| 01/30/2017 | NPTN | Buy Now | NeoPhotonics | — | — | — | Initiates | → Outperform | Get Alert | |
| 08/18/2016 | CSCO | Buy Now | Cisco Systems | $78.14 | -48.81% | $39 → $40 | Maintains | Outperform | Get Alert | |
| 02/25/2016 | AAOI | Buy Now | Applied Optoelectronics | $28.93 | -13.6% | $23 → $25 | Maintains | Outperform | Get Alert | |
| 02/10/2016 | CALX | Buy Now | Calix | $54.16 | — | — | Downgrade | Outperform → Market Perform | Get Alert | |
| 02/04/2016 | ADTN | Buy Now | Adtran | $8.38 | — | — | Upgrade | Underperform → Market Perform | Get Alert | |
| 05/06/2014 | BSFT | Buy Now | BroadSoft, Inc. | — | — | → $27 | Upgrade | Market Perform → Outperform | Get Alert | |
| 10/21/2013 | AAOI | Buy Now | Applied Optoelectronics | $28.93 | -48.16% | → $15 | Initiates | → Outperform | Get Alert | |
| 09/03/2013 | NOK | Buy Now | Nokia | $6.20 | — | — | Upgrade | Underperform → Market Perform | Get Alert | |
| 05/07/2013 | FFIV | Buy Now | F5 | $257.45 | — | — | Initiates | → Outperform | Get Alert | |
| 05/07/2013 | CALX | Buy Now | Calix | $54.16 | — | — | Initiates | → Outperform | Get Alert | |
| 05/07/2013 | CIEN | Buy Now | CIENA Corporation | $207.68 | — | — | Initiates | → Outperform | Get Alert | |
| 05/07/2013 | ADTN | Buy Now | Adtran | $8.38 | — | — | Initiates | → Underperform | Get Alert | |
| 05/07/2013 | CSCO | Buy Now | Cisco Systems | $78.14 | — | — | Initiates | → Outperform | Get Alert |
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