What they do:
FundOS — AI operations for fund managers
Quick facts:
HQ: Norwalk, CT, United States
Top Startups in Connecticut
This list has 23 startups and was last updated on Oct 15, 2026. Biggest hubs: New Haven (6), Stamford (3), and Shelton (2). Latest round: Thetis Pharmaceuticals raised $560K (Oct 13, 2026).
23 startups
Quick facts:
HQ: Westport, CT, United States
Incorporated: 2023
Funding:
$70M · Equity · May 2026
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HQ: New Haven, CT, United States
Incorporated: 2021
Funding:
$30M · Options · May 2026
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HQ: New Haven, CT, United States
Funding:
$26.4M · Equity · May 2026
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HQ: New Haven, CT, United States
Incorporated: 2025
Funding:
$13.5M · Equity · Feb 2026
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HQ: Lakeville, CT, United States
Incorporated: 2023
Funding:
$8.9M · Equity · Mar 2026
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HQ: Thomaston, CT, United States
Funding:
$8.66M · Equity · Mar 2026
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HQ: Stamford, CT, United States
Funding:
$6.61M · Equity · May 2026
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HQ: Shelton, CT, United States
Funding:
$6M · Equity · Feb 2026
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HQ: New Haven, CT, United States
Incorporated: 2022
Funding:
$4.55M · Equity · Jan 2026
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HQ: Naugatuck, CT, United States
Funding:
$3.45M · Debt · Feb 2026
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HQ: Riverside, CT, United States
Incorporated: 2026
Funding:
$2.7M · Equity · Feb 2026
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HQ: Milford, CT, United States
Incorporated: 2023
Funding:
$2.58M · Equity · Feb 2026
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HQ: Shelton, CT, United States
Funding:
$2.5M · Equity · Feb 2026
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HQ: Weston, CT, United States
Incorporated: 2025
Funding:
$2.43M · Equity · Jun 2026
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HQ: New Haven, CT, United States
Incorporated: 2025
Funding:
$2.1M · Equity · Feb 2026
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HQ: Newtown, CT, United States
Funding:
$2.02M · Equity · Apr 2026
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HQ: Stamford, CT, United States
Incorporated: 2026
Funding:
$2M · Options · Jun 2026
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HQ: Stamford, CT, United States
Incorporated: 2023
Funding:
$1.78M · Equity · Feb 2026
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HQ: Old Greenwich, CT, United States
Incorporated: 2025
Funding:
$1M · SAFE · Apr 2026
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HQ: New Haven, CT, United States
Incorporated: 2025
Funding:
$1M · Equity · Feb 2026
Quick facts:
HQ: Deep River, CT, United States
Funding:
$560K · Debt · Oct 2026
Simmery
Shut down
Quick facts:
HQ: Wallingford, CT, United States
YC S05Early stage
Questions and answers
How many startups are on this list?
There are 23 startups on this list, last updated on Oct 15, 2026.
Which of them are hiring?
None of them shows open roles right now.
Which of them raised money recently?
Latest rounds: Thetis Pharmaceuticals — $560K Debt (Oct 2026), Nanomind — $2M Options (Jun 2026), and MAMS Holdco — $2.43M Equity (Jun 2026).
Where are they based?
The biggest hubs are New Haven (6), Stamford (3), and Shelton (2).