EcoR1 Capital, LLC
EcoR1 Capital, LLC's purchase track record
How the stock did after each of EcoR1 Capital, LLC's open-market purchases, measured from the purchase date. Several fills within a week count as one purchase.
| Purchase | Stock | Amount | 3 months | 6 months | S&P 500, 6 mo. |
|---|---|---|---|---|---|
| 5/7/2026 | ATRA | $4.74M | -16.9% | pending | — |
| 1/12/2026 | AKTS | $40.00M | -20.3% | +17.6% | +7.7% |
| 5/15/2025 | ZYME | $636K | +24.0% | +60.5% | +13.9% |
| 4/16/2025 | ZYME | $1.46M | +20.2% | +65.5% | +26.5% |
| 3/31/2025 | ZYME | $5.12M | +5.4% | +44.7% | +18.7% |
| 3/19/2025 | ZYME | $3.61M | -1.3% | +24.1% | +16.3% |
| 3/11/2025 | ZYME | $15.25M | +11.7% | +30.2% | +16.9% |
| 1/10/2025 | ZYME | $6.92M | -19.6% | +0.9% | +7.4% |
| 1/2/2025 | ZYME | $2.63M | -20.5% | -11.8% | +7.0% |
| 12/30/2024 | ANAB | $1.10M | +40.6% | +67.9% | +5.1% |
| 12/24/2024 | ZYME | $4.87M | -9.5% | -9.3% | +0.9% |
| 8/14/2024 | ANAB | $10.00M | -40.1% | -53.4% | +10.9% |
| 6/16/2023 | ZYME | $27.20M | -16.3% | +12.1% | +7.0% |
| 3/28/2023 | ZYME | $1.60M | +1.4% | -21.1% | +7.6% |
| 1/18/2023 | ZYME | $5.01M | -1.1% | -21.3% | +16.2% |
| 1/10/2023 | ZYME | $15.54M | +15.4% | +2.7% | +13.3% |
| 6/21/2022 | VYGR | $2.66M | +13.8% | +11.9% | +1.5% |
| 5/5/2022 | ANAB | $14.45M | +7.0% | +38.2% | -10.3% |
| 5/5/2022 | PRTA | $30.84M | +11.2% | +98.8% | -10.3% |
| 1/12/2022 | PRTA | $11.25M | +0.1% | -18.6% | -19.6% |
Computed by MarketWall from SEC Form 4 filings and daily closing prices (close on the purchase date to the close about 3 and 6 months later). Companies that have since delisted are not included. Past results, not investment advice.
Associated companies
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 25, 2026
Evercore initiates coverage on TRAX with Outperform rating. Evercore ISI Group began coverage of First Tracks Biotherapeutics with an Outperform rating and a $65 price target. This adds to a bullish analyst narrative, as the average target from 11 analysts stands at $71.82. The stock is currently trading near its 52-week low, with recent volume spikes indicating heightened market attention.
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
October 1, 2026
AKTS launches second Phase 1b trial for AKY-2519. Aktis Oncology announced the start of a second Phase 1b clinical trial for its AKY-2519 candidate. The trial follows earlier testing and moves the drug further along the development pathway. This progress adds to the company's pipeline activity while the stock remains in a low RSI region, indicating recent price weakness.
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
October 13, 2026
ZYME News Highlights Potential Undervaluation and Raised Price Target. Recent coverage notes that Zymeworks may be about 39% undervalued based on its 2026 revenue guidance and the recent appointment of a chief investment officer. Truist Securities also kept its rating and lifted its price target to $34, reflecting continued confidence in the company's outlook.
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 25, 2026
Prothena included in Alzheimer's Day stock watchlist. Prothena was featured in a Yahoo Finance article listing four Alzheimer's drug stocks to watch on World Alzheimer's Day. This inclusion highlights the company's relevance in the neurodegenerative disease sector. The stock is currently trading near its 52-week low, with technical indicators showing a rejection at support levels.
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
October 13, 2026
AnaptysBio News Mixes Valuation Views With Litigation Risks. Recent articles highlight a split in opinion on AnaptysBio. Some sources argue the stock is undervalued based on its royalty model, while others point to significant litigation uncertainty. This debate occurs as the stock has seen a substantial rise, though it currently trades near its 52-week high.
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
October 16, 2026
Tango Therapeutics to Present Phase 1/2 Vopimetostat Data at ESMO 2026. Tango Therapeutics announced that it will share updated results from its Phase 1/2 study of vopimetostat combined with daraxonrasib or zoldonrasib in patients with MTAP‑deleted/RAS‑mutated metastatic pancreatic cancer and non‑small cell lung cancer at the ESMO Congress 2026. The data focus on a targeted patient group and may provide insight into the early‑stage safety and activity of the combination therapies. The stock is currently near a long‑standing support level, which could be monitored as the conference proceeds.
Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
October 15, 2026
Corvus Pharma Q2 2026 Earnings Call Transcript Released. Corvus Pharmaceuticals released the transcript of its Q2 2026 earnings call. The document offers details on the company’s recent financial results and guidance for the upcoming period. Investors can review the call to better understand the company’s performance and strategic priorities.
Transaction History
| ATRA | ▲ Buy | Open Market | 507,407 | $4.7M | 5/7/2026 | View on chart |
| TRAX | ▼ Sell | Open Market | 4,705,575 | $65.0M | 4/20/2026 | View on chart |
| AKTS | ▼ Sell | Other | 128,506 | — | 1/12/2026 | View on chart |
| AKTS | ▼ Sell | Other | 202,862 | — | 1/12/2026 | View on chart |
| AKTS | ▲ Buy | Open Market | 2,077,779 | $37.4M | 1/12/2026 | View on chart |
| AKTS | ▲ Buy | Open Market | 144,443 | $2.6M | 1/12/2026 | View on chart |
| AKTS | ▼ Sell | Other | 2,270,879 | — | 1/12/2026 | View on chart |
| ZYME | ▼ Sell | Tax Withholding | 41 | $521 | 6/26/2025 | View on chart |
| ZYME | ▼ Sell | Other | 5,086,480 | $509 | 6/26/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 5,919 | $70K | 5/19/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 49,502 | $566K | 5/15/2025 | View on chart |
| PRTA | ▼ Sell | Open Market | 1,984,053 | $15.2M | 5/6/2025 | View on chart |
| PRTA | ▼ Sell | Open Market | 977,693 | $7.9M | 5/5/2025 | View on chart |
| PRTA | ▼ Sell | Open Market | 3,317,938 | $27.7M | 5/2/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 54,760 | $631K | 4/17/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 73,953 | $826K | 4/16/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 196,438 | $2.2M | 4/4/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 120,770 | $1.4M | 4/3/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 74,360 | $881K | 4/2/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 48,658 | $565K | 4/1/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 4,397 | $52K | 3/31/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 43,848 | $537K | 3/26/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 53,501 | $690K | 3/25/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 22,689 | $297K | 3/24/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 31,033 | $397K | 3/21/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 73,476 | $950K | 3/20/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 58,306 | $737K | 3/19/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 113,880 | $1.4M | 3/18/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 56,277 | $688K | 3/17/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 468,356 | $5.8M | 3/13/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 292,934 | $3.6M | 3/12/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 320,690 | $3.7M | 3/11/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 19,748 | $274K | 1/17/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 121,681 | $1.7M | 1/16/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 39,029 | $547K | 1/15/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 54,500 | $739K | 1/14/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 74,125 | $993K | 1/13/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 204,098 | $2.7M | 1/10/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 21,021 | $296K | 1/8/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 157,880 | $2.3M | 1/2/2025 | View on chart |
| ANAB | ▲ Buy | Open Market | 6,646 | $86K | 1/2/2025 | View on chart |
| ZYME | ▲ Buy | Open Market | 146,501 | $2.1M | 12/31/2024 | View on chart |
| ANAB | ▲ Buy | Open Market | 13,268 | $172K | 12/31/2024 | View on chart |
| ZYME | ▲ Buy | Open Market | 58,988 | $853K | 12/30/2024 | View on chart |
| ANAB | ▲ Buy | Open Market | 65,184 | $842K | 12/30/2024 | View on chart |
| ZYME | ▲ Buy | Open Market | 101,659 | $1.5M | 12/27/2024 | View on chart |
| ZYME | ▲ Buy | Open Market | 16,692 | $240K | 12/26/2024 | View on chart |
| ZYME | ▲ Buy | Open Market | 11,958 | $169K | 12/24/2024 | View on chart |
| TNGX | ▼ Sell | Open Market | 62,318 | $205K | 11/7/2024 | View on chart |
| TNGX | ▼ Sell | Open Market | 1,143,124 | $3.3M | 11/7/2024 | View on chart |
| TNGX | ▼ Sell | Open Market | 1,494,558 | $4.9M | 11/6/2024 | View on chart |
| ANAB | ▲ Buy | Open Market | 273,972 | $10.0M | 8/14/2024 | View on chart |
| ZYME | ▲ Buy | Open Market | 3,350,000 | $27.2M | 6/16/2023 | View on chart |
| ZYME | ▲ Buy | Open Market | 200,000 | $1.6M | 3/28/2023 | View on chart |
| ZYME | ▲ Buy | Open Market | 163,400 | $1.6M | 1/20/2023 | View on chart |
| ZYME | ▲ Buy | Open Market | 144,100 | $1.4M | 1/19/2023 | View on chart |
| ZYME | ▲ Buy | Open Market | 203,000 | $2.0M | 1/18/2023 | View on chart |
| ZYME | ▲ Buy | Open Market | 440,000 | $4.3M | 1/17/2023 | View on chart |
| ZYME | ▲ Buy | Open Market | 342,100 | $3.4M | 1/13/2023 | View on chart |
| VYGR | ▼ Sell | Open Market | 110,000 | $935K | 1/11/2023 | View on chart |
| ZYME | ▲ Buy | Open Market | 106,300 | $837K | 1/11/2023 | View on chart |
| ZYME | ▲ Buy | Open Market | 920,000 | $7.0M | 1/10/2023 | View on chart |
| VYGR | ▼ Sell | Open Market | 336,400 | $2.7M | 1/10/2023 | View on chart |
| VYGR | ▼ Sell | Open Market | 456,000 | $3.5M | 1/9/2023 | View on chart |
| VYGR | ▲ Buy | Open Market | 376,000 | $2.1M | 6/23/2022 | View on chart |
| VYGR | ▲ Buy | Open Market | 101,400 | $536K | 6/21/2022 | View on chart |
| PRTA | ▲ Buy | Open Market | 1,062,736 | $30.8M | 5/5/2022 | View on chart |
| PRTA | ▼ Sell | Open Market | 1,062,736 | $30.8M | 5/5/2022 | View on chart |
| ANAB | ▼ Sell | Open Market | 668,237 | $14.5M | 5/5/2022 | View on chart |
| ANAB | ▲ Buy | Open Market | 668,237 | $14.5M | 5/5/2022 | View on chart |
| PRTA | ▲ Buy | Open Market | 300,000 | $11.3M | 1/12/2022 | View on chart |
| CRVS | ▼ Sell | Open Market | 2,000,000 | $9.9M | 10/1/2021 | View on chart |
| CRVS | ▼ Sell | Open Market | 3,000,000 | $15.1M | 9/30/2021 | View on chart |
AI Market Commentary
AI-generatedAll commentary →Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 30, 2026
Atara Biotherapeutics Resubmits Tabelecleucel BLA to FDA
Atara Biotherapeutics and its partner Pierre Fabre have filed a new biologics license application for the Tabelecleucel therapy with the U.S. FDA. The resubmission follows the earlier filing and reflects the companies' effort to move the product toward approval. The stock is currently near a long‑standing support level, which may be watched as the regulatory process continues.
Atara Biotherapeutics Resubmits Tabelecleucel BLA to FDA. Atara Biotherapeutics and its partner Pierre Fabre have filed a new biologics license application for the Tabelecleucel therapy with the U.S. FDA. The resubmission follows the earlier filing and reflects the companies' effort to move the product toward approval. The stock is currently near a long‑standing support level, which may be watched as the regulatory process continues.