--- title: "49 Venture Capital Firms in Connecticut: 43 in Fairfield County" last_updated: "2026-11-06" rows: "49" free_rows: "24" source: "SEC filings" canonical: "https://theinvestordatabase.com/lists/venture-capital-firms-in-connecticut/" --- # 49 venture capital firms in Connecticut, including 43 in Fairfield County We list 49 venture capital firms in Connecticut as of November 2026: each has an SEC filing on file, and the list was last checked on 6 Nov 2026. The cities with the most head offices on this list are Westport (13), Greenwich (11) and Stamford (9). 43 of the 49 are in Fairfield County, so this page is also our list of venture capital firms in Fairfield County. - 49 firms - 18 with a fund filing or dated deal in the last 12 months - $50M median fund size on file (SEC Form D, 27 firms) - 144 named decision-makers on file ## First 24 of 49 venture capital firms in Connecticut | Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile | |---|---|---|---|---|---|---|---|---| | NSV | VC firm | Greenwich, CT | Seed, Late stage | Healthtech, AI, Semiconductor, Mobility | Portfolio news, Oct 2026 | $990M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/nsv/ | | Altai Ventures | VC firm | Westport, CT | Seed, Series A | Insurtech, Fintech, AI, SaaS | New fund, Oct 2026 | $100M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/altai-ventures/ | | Decisive Point VENTURES | VC firm | Greenwich, CT | | AI, Energy, Defense Tech, Robotics | New fund, Nov 2026 | $60M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/decisive-point-ventures/ | | Tamarack Global | VC firm | Greenwich, CT | | Defense Tech, Energy, AI, Industrial Tech | New fund, Sep 2026 | $50M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/tamarack-global/ | | Samaritan Partners | VC firm | Darien, CT | Seed | Impact, Healthtech | New fund, Aug 2026 | $10M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/samaritan-partners/ | | Fairview Private Markets | Fund manager | West Hartford, CT | | | New fund, Aug 2026 | $108M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/fairview-private-markets/ | | Outsiders Fund | VC firm | Norwalk, CT | Seed, Series A | AI, Cybersecurity, Industrial Tech, Mobility | New fund, Jan 2026 | $150M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/outsiders-fund/ | | Vesey Ventures | VC firm | Westport, CT | Pre-seed, Seed, Series A | Fintech, AI, Cybersecurity, SaaS | New fund, May 2026 | $77M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/vesey-ventures/ | | Hash3 | VC firm | Ridgefield, CT | Pre-seed, Seed | Crypto and Web3, Fintech, AI, SaaS | New fund, Dec 2025 | $28M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/hash3/ | | Acadian Ventures | VC firm | Madison, CT | Pre-seed, Seed, Series A | Future of Work, AI, SaaS | New fund, Sep 2025 | $60M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/acadian-ventures/ | | Mamba Growth | VC firm | Riverside, CT | Growth | | New deal, Jul 2025 | $103M (SEC Form D, 2024) | 2026-11-05 | https://theinvestordatabase.com/investors/mamba-growth/ | | Story Ventures | VC firm | Westport, CT | Pre-seed, Seed | Healthtech, AI, Fintech, Deep Tech | | $455M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/story-ventures/ | | Regeneron Ventures | Corporate VC | Greenwich, CT | | Healthtech, Biotech, Medtech | | $479M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/positive-selection/ | | 6th Man Ventures | VC firm | Westport, CT | Seed, Series A | Crypto and Web3, Fintech, Developer Tools, AI | New deal, Jan 2026 | | 2026-11-04 | https://theinvestordatabase.com/investors/6th-man-ventures/ | | Red Beard Ventures | VC firm | Westport, CT | Seed | Crypto and Web3, Gaming, Media, Robotics | New fund, Sep 2025 | $26M (SEC Form D, 2022) | 2026-11-04 | https://theinvestordatabase.com/investors/red-beard-ventures/ | | OAK Management Corporation | VC firm | Wilton, CT | Growth, Any stage | Healthtech, Biotech, Fintech, Consumer | | $117M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/oak-management-corporation/ | | TF Technology Investments | VC firm | Trumbull, CT | | AI, Developer Tools, Media, Energy | New fund, May 2025 | $12M (SEC Form D, 2025) | 2026-11-05 | https://theinvestordatabase.com/investors/tf-technology-investments/ | | AF Ventures | VC firm | Greenwich, CT | Growth | Healthtech, Food and Beverage, Consumer, CPG | | $119M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/af-ventures/ | | Wheelhouse360 | VC firm | Stamford, CT | | Logistics, Consumer, Media, Healthtech | | $53M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/wheelhouse360/ | | Max Ventures | VC firm | Old Greenwich, CT | Pre-seed, Seed | | New fund, Sep 2024 | $50M (SEC Form D, 2023) | 2026-11-05 | https://theinvestordatabase.com/investors/max-ventures/ | | HighCape Capital | VC firm | Westport, CT | Growth | Biotech, Healthtech, Proptech, Medtech | | $48M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/highcape-capital/ | | M28Capital | VC firm | Stamford, CT | | Healthtech, Biotech, Medtech | | $113M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/m28capital/ | | Interactive Venture Partners | Corporate VC | Greenwich, CT | Pre-seed, Seed, Series A | AI, Healthtech, Generalist, SaaS | | $20M (SEC Form ADV) | 2026-11-05 | https://theinvestordatabase.com/investors/interactive-venture-partners/ | | Oak HC/FT | VC firm | Stamford, CT | Seed, Series A, Series B, Growth | Fintech, Healthtech, AI, Insurtech | New fund, Jul 2025 | | 2026-11-04 | https://theinvestordatabase.com/investors/oak-hc-ft/ | You are seeing 24 of 49. The full list adds 25 more firms and 144 named decision-makers. Get all 49 firms and 144 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/venture-capital-firms-in-connecticut This page: https://theinvestordatabase.com/lists/venture-capital-firms-in-connecticut/ ## 43 venture capital firms in Fairfield County 16 of the 43 have a fund filing or a dated deal in the last 12 months; the median fund size on file is $50M (SEC Form D, 22 firms); the most recent fund filings are from Decisive Point VENTURES (Nov 2026), Altai Ventures (Oct 2026) and Tamarack Global (Sep 2026); of the 22 with a stage on file, seed (15), growth-stage (8) and Series A (6); the count covers the metro area, by city: Westport (13), Greenwich (11) and Stamford (9); the paid file holds 121 named decision-makers for them. The first 5 in list order: NSV, Altai Ventures, Decisive Point VENTURES, Tamarack Global and Samaritan Partners. ## Method and limits - Source: All 49 rows carry an SEC filing (Form D or Form ADV). 33 of the 49 have a website we checked; the other 16 rest on the filing or register entry alone. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research. - Inclusion rule: Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. This list holds VC firms, fund managers and corporate venture arms; accelerators and angel networks are in their own lists. Place: head office in Connecticut. - Order: Activity score out of 100: recency of the latest fund filing or dated deal (50: full marks within 3 months, then stepping down at 6, 12 and 24 months), size of the fund on file on a log scale (35) and completeness of the public record (15). It is a measure of activity and fit, not of quality or returns. - Fill rates: Of 49 rows: stage 23, sector 27, fund size 43, website 33. In the paid file: named decision-makers on 37 rows, firm email on 13, LinkedIn page on 11, check size on 3. ## Questions ### How many VC firms are in Connecticut? We list 49 as of November 2026. 18 of the 49 have a fund filing or a dated deal in the last 12 months. By type: VC firm (46), Corporate VC (2) and Fund manager (1). ### Which cities in Connecticut have the most VC firms? Westport (13), Greenwich (11) and Stamford (9). ### Which Connecticut VC funds filed with the SEC in the last 12 months? 15 of the 49 have a fund filing dated in the last 12 months. The most recent on this list are Decisive Point VENTURES (Nov 2026), Altai Ventures (Oct 2026) and Tamarack Global (Sep 2026). ### What stages do venture capital firms in Connecticut back? Of the 23 with a stage on file, seed (16), growth-stage (8) and pre-seed (7). A firm can back more than one stage, and 26 rows have no stage on file yet. ### Where does the data on venture capital firms in Connecticut come from and how often is it updated? All 49 rows have an SEC filing on file (Form D or Form ADV). Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were last checked on 6 Nov 2026 at the latest. The whole file is re-verified twice a year. ### Can I download the list of venture capital firms in Connecticut as a spreadsheet? Yes. The file holds all 49 rows in Excel and CSV, with 144 named decision-makers and 13 firm emails, for $49 one-time. 24 rows are free on this page.