17 AI investors in Connecticut, including 15 in Fairfield County
We list 17 AI investors 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 (6), Greenwich (5) and Stamford (2). 15 of the 17 are in Fairfield County, so this page is also our list of AI investors in Fairfield County.
Top 5 AI investors in Connecticut, ranked by recent fund activity
Among firms with a published profile and a dated fund or deal in the last 24 months. The rule: Activity score out of 100: recency of the latest fund filing or dated deal (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (15) and completeness of the public record (10). Regional focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns. The same rule orders the whole list; it is repeated in the method box.
NSV
Type: VC firm · HQ: Greenwich, CT · Stages: Seed, Late stage · Focus: AI, Healthtech, Semiconductor, Mobility · Latest activity: Portfolio news, Oct 2026 · Private fund assets: $990M (SEC Form ADV)
Portfolio news dated Oct 2026; $990M on file (SEC Form ADV); states AI as a focus; names the US as where it invests; 5 named decision-makers on file.
Tamarack Global
Type: VC firm · HQ: Greenwich, CT · Focus: AI, Defense Tech, Energy, Industrial Tech · Latest activity: New fund, Sep 2026 · Fund size on file: $50M (SEC Form D, 2025)
Latest fund filing dated Sep 2026; $50M fund on file (SEC Form D, 2025); states AI as a focus; names the US as where it invests; 5 named decision-makers on file.
Altai Ventures
Type: VC firm · HQ: Westport, CT · Stages: Seed, Series A · Focus: AI, Insurtech, Fintech, SaaS · Latest activity: New fund, Oct 2026 · Fund size on file: $100M (SEC Form D, 2025)
Latest fund filing dated Oct 2026; $100M fund on file (SEC Form D, 2025); states AI as a focus; 8 named decision-makers on file.
Decisive Point VENTURES
Type: VC firm · HQ: Greenwich, CT · Focus: AI, Energy, Defense Tech, Robotics · Latest activity: New fund, Nov 2026 · Fund size on file: $60M (SEC Form D, 2023)
Latest fund filing dated Nov 2026; $60M fund on file (SEC Form D, 2023); states AI as a focus; 8 named decision-makers on file.
Outsiders Fund
Type: VC firm · HQ: Norwalk, CT · Stages: Seed, Series A · Focus: AI, Cybersecurity, Industrial Tech, Mobility · Latest activity: New fund, Jan 2026 · Fund size on file: $150M (SEC Form D, 2025)
Latest fund filing dated Jan 2026; $150M fund on file (SEC Form D, 2025); states AI as a focus; 8 named decision-makers on file.
First 10 of 17 AI investors in Connecticut
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| NSV | VC firm | Greenwich, CT | Seed, Late stage | AI, Healthtech, Semiconductor, Mobility | Portfolio news, Oct 2026 | $990M (SEC Form ADV) | 5 Nov 2026 | 5 names · Unlock |
| Tamarack Global | VC firm | Greenwich, CT | AI, Defense Tech, Energy, Industrial Tech | New fund, Sep 2026 | $50M (SEC Form D, 2025) | 4 Nov 2026 | 5 names · Unlock | |
| Altai Ventures | VC firm | Westport, CT | Seed, Series A | AI, Insurtech, Fintech, SaaS | New fund, Oct 2026 | $100M (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
| Decisive Point VENTURES | VC firm | Greenwich, CT | AI, Energy, Defense Tech, Robotics | New fund, Nov 2026 | $60M (SEC Form D, 2023) | 4 Nov 2026 | 8 names, firm email · Unlock | |
| Outsiders Fund | VC firm | Norwalk, CT | Seed, Series A | AI, Cybersecurity, Industrial Tech, Mobility | New fund, Jan 2026 | $150M (SEC Form D, 2025) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Vesey Ventures | VC firm | Westport, CT | Pre-seed, Seed, Series A | AI, Fintech, Cybersecurity, SaaS | New fund, May 2026 | $77M (SEC Form D, 2021) | 5 Nov 2026 | 3 names, firm email · Unlock |
| Hash3 | VC firm | Ridgefield, CT | Pre-seed, Seed | AI, Crypto and Web3, Fintech, SaaS | New fund, Dec 2025 | $28M (SEC Form D, 2022) | 4 Nov 2026 | 2 names, firm email · Unlock |
| Oak HC/FT | VC firm | Stamford, CT | Seed, Series A, Series B, Growth | AI, Fintech, Healthtech, Insurtech | New fund, Jul 2025 | 4 Nov 2026 | 5 names, firm email · Unlock | |
| 6th Man Ventures | VC firm | Westport, CT | Seed, Series A | AI, Crypto and Web3, Fintech, Developer Tools | New deal, Jan 2026 | 4 Nov 2026 | 2 names, firm email · Unlock | |
| Acadian Ventures | VC firm | Madison, CT | Pre-seed, Seed, Series A | AI, Future of Work, SaaS | New fund, Sep 2025 | $60M (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
You are seeing 10 of 17. The full list adds 7 more investors and 84 named decision-makers.
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15 AI investors in Fairfield County
9 of the 15 have a fund filing or a dated deal in the last 12 months; the median fund size on file is $60M (SEC Form D, 9 firms); the most recent fund filings are from Decisive Point VENTURES (Nov 2026), Altai Ventures (Oct 2026) and Tamarack Global (Sep 2026); of the 12 with a stage on file, seed (12), Series A (6) and pre-seed (6); the count covers the metro area, by city: Westport (6), Greenwich (5) and Stamford (2); the paid file holds 72 named decision-makers for them.
The first 5 in list order: NSV, Tamarack Global, Altai Ventures, Decisive Point VENTURES and Outsiders Fund. They are ranked with the rest of the list, by the same rule.
How these 17 break down
By city
| City | On this list | Share |
|---|---|---|
| Westport | 6 | 35% |
| Greenwich | 5 | 29% |
| Stamford | 2 | 12% |
By stage
| Stage | On this list | Share |
|---|---|---|
| Pre-Seed | 7 | 41% |
| Seed | 13 | 76% |
| Series A | 7 | 41% |
Stage is our research. A firm can back more than one stage.
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 15 | 88% |
| Accelerator | 1 | 6% |
| Corporate VC | 1 | 6% |
Method and limits
- Source
- All 17 rows carry an SEC filing (Form D or Form ADV). All 17 have a website we checked. 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. Sector: the firm states AI as a focus on its own site, or we observed it in the firm's portfolio. Place: head office in Connecticut.
- Order
- Firms with a published profile come first. Activity score out of 100: recency of the latest fund filing or dated deal (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (15) and completeness of the public record (10). Regional focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 6 Nov 2026.
- Fill rates
- Of 17 rows: stage 13, sector 17, fund size 14, website 17. In the paid file: named decision-makers on 16 rows, firm email on 9, LinkedIn page on 9, check size on 2.
- Corrections
- Email [email protected] or use the update form. We act within 5 working days.
Questions
How many AI investors in Connecticut are there?
We list 17 as of November 2026. 9 of the 17 have a fund filing or a dated deal in the last 12 months. The cities with the most are Westport (6), Greenwich (5) and Stamford (2).
Which AI investors in Connecticut raised a new fund in the last 12 months?
7 of the 17 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 is the typical fund size of AI investors in Connecticut?
The median fund size on file for this list is $60M, across the 11 firms with a size on an SEC Form D. The fund on file is each firm's main fund, which is not always its newest. The other 6 do not disclose a size there.
How do I contact AI investors in Connecticut?
The paid file holds 84 named decision-makers across 16 of these 17 and a firm email for 9. We publish the address a firm lists itself, never a personal email. Each free row links to a profile with the firm's website.
Where does the data on AI investors in Connecticut come from?
All 17 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.
Related lists
AI investors in California (464)AI investors in New York (159)AI investors in Massachusetts (61)AI investors in Florida (60)AI investors in Texas (56)AI investors in Illinois (35)AI investors in Washington (26)AI investors in Colorado (23)AI investors in Utah (17)SaaS investors in Connecticut (17)Healthtech investors in Connecticut (16)AI investors in Pennsylvania (15)
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