38 is the total number of securities MPM ASSET MANAGEMENT LLC has owned. The longest MPM ASSET MANAGEMENT LLC has owned a single stock is 24 quarters.
| Period | Weighting | Quarter | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Ticker | Name | Longest | Shortest | Min. | Avg. | Max. | First | Latest | ↓ Count |
| CHMA | Chiasma, Inc. | 24 | 24 | 3.31% | 9.06% | 19.84% | Q3 2015 | Q2 2021 | 24 |
| PETX | Aratana Therapeutics, ... | 24 | 24 | 0.37% | 5.12% | 26.84% | Q2 2013 | Q1 2019 | 24 |
| CNAT | Conatus Pharmaceutical... | 23 | 23 | 0.61% | 2.82% | 9.68% | Q3 2013 | Q1 2019 | 23 |
| RYTM | Rhythm Pharmaceuticals... | 19 | 19 | 1.59% | 21.15% | 69.94% | Q4 2017 | Q2 2022 | 19 |
| HARP | Harpoon Therapeutics, ... | 19 | 19 | 0.68% | 11.64% | 31.87% | Q1 2019 | Q3 2023 | 19 |
| SNDX | Syndax Pharmaceuticals... | 19 | 19 | 4.70% | 9.29% | 14.47% | Q1 2016 | Q3 2020 | 19 |
| RDUS | Radius Health, Inc. | 17 | 17 | 25.50% | 58.63% | 76.39% | Q2 2014 | Q2 2018 | 17 |
| TCRR | TCR2 Therapeutics, Inc. | 17 | 17 | 1.69% | 13.66% | 29.12% | Q1 2019 | Q1 2023 | 17 |
| PRTO | Proteon Therapeutics, ... | 17 | 17 | 0.65% | 1.74% | 3.00% | Q4 2014 | Q4 2018 | 17 |
| EPZM | EpiZyme, Inc. | 15 | 15 | 3.42% | 14.64% | 35.87% | Q2 2013 | Q4 2016 | 15 |
| RPTX | Repare Therapeutics, Inc. | 14 | 14 | 9.20% | 13.98% | 27.72% | Q2 2020 | Q3 2023 | 14 |
| ITOS | iTeos Therapeutics, Inc. | 13 | 13 | 15.53% | 20.92% | 30.12% | Q3 2020 | Q3 2023 | 13 |
| DYN | Dyne Therapeutics, Inc. | 13 | 13 | 12.72% | 19.42% | 27.32% | Q3 2020 | Q3 2023 | 13 |
| ONCR | Oncorus, Inc. | 11 | 11 | 0.06% | 3.85% | 13.04% | Q4 2020 | Q2 2023 | 11 |
| MGNX | MacroGenics, Inc. | 11 | 11 | 0.01% | 3.36% | 20.98% | Q4 2013 | Q2 2016 | 11 |
| PIP | PharmAthene, Inc. | 11 | 11 | 1.30% | 3.07% | 4.92% | Q2 2013 | Q4 2015 | 11 |
| ELGX | Endologix, Inc. | 11 | 11 | 1.45% | 2.91% | 4.70% | Q1 2016 | Q3 2018 | 11 |
| ETRM | EnteroMedics, Inc. | 11 | 11 | 0.03% | 0.47% | 1.10% | Q2 2013 | Q4 2015 | 11 |
| SGMO | Sangamo Biosciences, Inc. | 11 | 11 | 0.02% | 0.07% | 0.17% | Q4 2013 | Q2 2016 | 11 |
| PTLA | Portola Pharmaceutical... | 10 | 10 | 7.68% | 13.56% | 26.55% | Q2 2013 | Q3 2015 | 10 |
| HOWL | Werewolf Therapeutics,... | 10 | 10 | 3.68% | 8.28% | 17.04% | Q2 2021 | Q3 2023 | 10 |
| VSTM | Verastem, Inc. | 10 | 10 | 0.16% | 3.12% | 10.67% | Q2 2013 | Q3 2015 | 10 |
| MSTX | Mast Therapeutics, Inc. | 10 | 10 | 0.11% | 0.25% | 0.47% | Q1 2014 | Q2 2016 | 10 |
| Entrada Therapeutics, ... | 8 | 8 | 14.20% | 25.25% | 37.45% | Q4 2021 | Q3 2023 | 8 | |
| AMYT | Amryt Pharma plc | 7 | 7 | 6.23% | 8.64% | 16.21% | Q3 2021 | Q1 2023 | 7 |
| TRIV | Trivascular Technologi... | 7 | 7 | 1.37% | 4.53% | 9.31% | Q2 2014 | Q4 2015 | 7 |
| NVRO | Nevro Corporation | 7 | 7 | 1.51% | 3.40% | 7.02% | Q4 2014 | Q2 2016 | 7 |
| PCRX | Pacira Pharmaceuticals... | 5 | 5 | 1.16% | 5.19% | 11.18% | Q2 2013 | Q2 2014 | 5 |
| CLDN | Celladon Corporation | 5 | 5 | 3.23% | 4.30% | 5.75% | Q1 2014 | Q1 2015 | 5 |
| CLCD | CoLucid Pharmaceutical... | 5 | 5 | 0.01% | 0.04% | 0.06% | Q2 2015 | Q2 2016 | 5 |
| ALT | Altimmune, Inc. | 5 | 5 | 0.00% | 0.01% | 0.01% | Q2 2017 | Q2 2018 | 5 |
| KBIO | Kalobios Pharmaceutica... | 3 | 3 | 3.36% | 4.57% | 6.60% | Q2 2013 | Q4 2013 | 3 |
| AVEO | AVEO Pharmaceuticals, ... | 3 | 3 | 0.81% | 1.51% | 2.44% | Q2 2013 | Q4 2013 | 3 |
| ADAP | Adaptimmune Therapeuti... | 2 | 2 | 2.63% | 2.74% | 2.85% | Q2 2023 | Q3 2023 | 2 |
| ZLCS | Zalicus, Inc. | 2 | 2 | 1.38% | 1.63% | 1.88% | Q2 2013 | Q3 2013 | 2 |
| CERC | Cerecor, Inc. | 2 | 2 | 0.36% | 0.52% | 0.69% | Q4 2015 | Q1 2016 | 2 |
| VLRX | Valeritas Holdings, Inc. | 2 | 2 | 0.04% | 0.04% | 0.04% | Q1 2017 | Q2 2017 | 2 |
| ETRM | EnteroMedics, Inc. | 2 | 2 | 0.01% | 0.01% | 0.02% | Q1 2016 | Q2 2016 | 2 |
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The securities at the top of the list , including Chiasma, Inc., Aratana Therapeutics, Inc., and Conatus Pharmaceuticals, Inc., are the highest-conviction holdings of MPM ASSET MANAGEMENT LLC.
The conviction is calculated by counting the number of quarters a security has been reported by MPM ASSET MANAGEMENT LLC. The higher the number, the higher the conviction and longer the holding period.
This page lists all the securities that MPM ASSET MANAGEMENT LLC owns currently or has owned in the past.