Fine Structure Ventures is a venture capital fund affiliated with FMR LLC, the parent company of Fidelity Investments. The firm focuses on early-stage investments in disruptive scientific and technological innovations, typically participating in Seed, Series A, and Series B rounds. Their investment strategy is geared towards fostering groundbreaking advancements in various sectors, including energy, biotechnology, and advanced materials.
Notable portfolio companies include Commonwealth Fusion Systems, which has raised $1.8 billion, Mainspring Energy with $290 million, and Debut Biotech with $62.6 million. The firm’s team comprises scientists and investors who work closely with entrepreneurs to provide strategic guidance and support. Fine Structure Ventures leverages its deep expertise and extensive network to offer unique value-add services, enhancing the growth and success of its portfolio companies.
Fine Structure Venture - Portfolio Snapshot
Portfolio activity breakdown across disclosed investments and stages
Total Investments19
Current Portfolio Count16
Total Portfolio Exits0
Top Investment Stages
Series A11 (57.9%)
Seed3 (15.8%)
Series B3 (15.8%)
Series E2 (10.5%)
Stage Mix
Series A 58%Seed 16%Series B 16%Series E 11%
Concentration shown as share of disclosed investments by stage.
Fine Structure Venture - Classification
- NAICS
- 520000Finance and Insurance
- 523000Securities, Commodity Contracts, and Other Financial Investments and Related Activities
- 523900Other Financial Investment Activities
- 523990All Other Financial Investment Activities
- 523999Miscellaneous Financial Investment Activities
- SIC
- 6700Holding And Other Investment Offices
- 6790Miscellaneous Investing
- 6799Investors, Not Elsewhere Classified
Show 6 more industry codes
- NAICS
- 525000Funds, Trusts, and Other Financial Vehicles
- 523910Miscellaneous Intermediation
- 523940Portfolio Management and Investment Advice
- SIC
- 6000Depository Institutions
- 6720Investment Offices
- 6722Management Investment Offices, Open-end