Investment Firms in Arlington, Virginia, United States
Situated across the Potomac River from Washington, D.C., it has emerged as a significant hub for venture capital, particularly in sectors like defense technology, artificial intelligence, and healthcare. Its ecosystem is distinguished by its proximity to federal agencies and national security infrastructure, which attracts firms specializing in government-oriented and dual-use technologies. The presence of established investment firms and a focus on growth-stage companies further solidifies its role in the regional innovation economy.
Arlington, Virginia, United States's investment landscape is shaped by Biotech & Life Sciences, with 44% of its 9 investment firms focused on this sector. The most active by portfolio size are Sands Capital, In-Q-Tel, and Washington Harbour Partners.
Biotech & Life Sciences dominates the investment landscape in Arlington, with 44% of investment firms focused on this sector.
Arlington has a long history of venture capital, with the Nature Conservancy operating since 1951.
Last updated: 28 April 2026
Investment Firms
9
Total Investments
174
Top Sector
Biotech & Life Sciences
Top Stage
Series A
Top Investment Sectors in Arlington
The most popular sector focus among Arlington investment firms is Biotech & Life Sciences, with 4 investment firms (44%) investing in the space. This is followed by AI (4), Defense & Space (4), Climate & Energy (4), Cybersecurity (3).
Investment Stages in Arlington
Arlington investment firms are most active at the Series A stage (7 investment firms). This is followed by Seed (4), Series C (3), Series D (3), Series B (3).
Sands Capital
Arlington, Virginia, United States
68 investments
Series C, Series A
Healthcare, Fintech, Biotech & Life Sciences …
In-Q-Tel
Arlington, Virginia, United States
60 investments
Series B, Series A
Defense & Space, Cybersecurity, AI …
Washington Harbour Partners
Arlington, Virginia, United States
16 investments
Series B, Series A
Defense & Space, AI, Manufacturing …
Marlinspike
Arlington, Virginia, United States
11 investments
Series A, Series D
Logistics & Supply Chain, Defense & Space, AI …
Stand Together Ventures Lab
Arlington, Virginia, United States
7 investments
Seed, Series A
Education, Enterprise Software, Logistics & Supply Chain …
the Nature Conservancy
Arlington, Virginia, United States
4 investments
Series B, Series A
Climate & Energy, Food & Agriculture, Biotech & Life Sciences
In-Q-Tel, Inc.
Arlington, Virginia, United States
3 investments
Biotech & Life Sciences, Logistics & Supply Chain, Developer Tools
E2MC
Arlington, Virginia, United States
3 investments
Seed, Series A
Defense & Space, Climate & Energy
Stonemill Ventures
Arlington, Virginia, United States
2 investments
Cybersecurity