EcoR1 Capital VYGR Position
Active3-Fund ConvergenceEcoR1 Capital increased their position in Voyager Therapeutics Inc. (VYGR) in Q4 2025, holding $15.7M worth of shares across 4,002,847 shares.
The position was first reported in Q1 2023 and has been tracked across 12 quarterly 13F filings.
VYGR is a convergence signal: 3 specialist biotech funds hold this stock, suggesting high institutional conviction.
There is an upcoming Phase 2 readout for VY7523 in 410 days (May 31, 2027), making the timing of EcoR1's position particularly relevant.
About Voyager Therapeutics Inc.
Voyager Therapeutics, Inc., a gene therapy company, focuses on the development of treatments and next-generation platform technologies. The company's lead clinical candidate is the VY-AADC, which is in open-label Phase 1 clinical trial for the treatment of Parkinson's disease. Its preclinical programs comprise VY-SOD102 for the treatment of amyotrophic lateral sclerosis; VY-HTT01 for Huntington's disease; VY-FXN01 for Friedreich's ataxia; and Tau program for the treatment of tauopathies, including Alzheimer's disease, progressive supranuclear palsy, and frontotemporal dementia, as well as for spinal muscular atrophy. The company has collaboration and license agreements with Neurocrine Biosciences, Inc., Pfizer Inc., and Novartis Pharma, A.G. for the research, development, and commercialization of adeno-associated virus gene therapy products. Voyager Therapeutics, Inc. was incorporated in 2013 and is headquartered in Cambridge, Massachusetts.
Full company profile →Short Interest
6.3%
3.7 days to cover
EcoR1 Capital VYGR Position History
| Quarter | Action | Shares | Change | Value |
|---|---|---|---|---|
| Q4 2025 | Increased | 4,002,847 | +3,332,544 | $15.7M |
| Q3 2025 | Decreased | 670,303 | -3,247,243 | $3.1M |
| Q2 2025 | Held | 3,917,546 | — | $12.2M |
| Q1 2025 | Held | 3,917,546 | — | $13.2M |
| Q4 2024 | Held | 3,917,546 | — | $22.2M |
| Q3 2024 | Held | 3,917,546 | — | $22.9M |
| Q2 2024 | Held | 3,917,546 | — | $31.0M |
| Q1 2024 | Increased | 3,917,546 | +66,039 | $36.5M |
| Q4 2023 | Held | 3,851,507 | — | $32.5M |
| Q3 2023 | Held | 3,851,507 | — | $29.8M |
| Q2 2023 | Held | 3,851,507 | — | $44.1M |
| Q1 2023 | New | 3,851,507 | +3,851,507 | $29.7M |
Frequently Asked Questions
Does EcoR1 Capital own VYGR?
Yes. As of Q4 2025, EcoR1 Capital holds 4,002,847 shares of Voyager Therapeutics Inc. (VYGR) valued at $15.7M. This data comes from their SEC 13F filing.
How many hedge funds own VYGR?
3 specialist biotech hedge funds currently hold VYGR, including Driehaus Capital, Deerfield Management. When 3 or more specialist funds hold the same stock, BiotechEdge flags it as a convergence signal.
When did EcoR1 Capital first buy VYGR?
EcoR1 Capital's position in VYGR was first reported in Q1 2023. 13F filings are reported with a 45-day delay, so the actual purchase may have occurred earlier in the quarter.
Is EcoR1 Capital's VYGR position increasing or decreasing?
EcoR1 Capital increased their VYGR position in the most recent quarter, adding 3,332,544 shares.
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