All Rankings

Top Series A Companies in the US 2026

Private companies headquartered in the United States whose latest recorded round was Series A, ranked by disclosed lifetime funding.

Known total funding for 100 of 100 ranked companies: $35.6B.

Showing top 100 matching companies · Ranked by total funding raised

Use company data through the API.
Example request
curl "https://indexed.vc/api/v1/companies?countries=United+States&operatingStatus=active&sort=total_funding_raised&order=desc&limit=100" -H "X-API-Key: YOUR_API_KEY"

The API has no funding stage filter, so this includes every stage, not only Series A.

The API has no company type filter, so public companies can appear; this list counts private companies only.

The API cannot leave out companies whose latest round is a grant; this list does.

Data from Indexed.vcUpdated

Methodology: up to 100 active companies matching this list's filters are ordered by disclosed total funding in USD. Companies whose latest round is one of: Grant are excluded. Totals include recorded grants and other qualifying funding, not just equity. Open a company profile for its funding summary and available detail. How this data is built.

1
Groq

Groq delivers fast, low cost AI inference using custom LPU (Language Processing Unit) chips and G...

Mountain View, United States201–500Artificial Intelligence, Hardware
Series ATotal funding$4.2BAug 2026
2
Altos Labs

Altos Labs combines academic science and industry development to create medicines that restore ce...

San Francisco, United States501–1000Life Sciences, Biotech
Series ATotal funding$3.0BJan 2022
3
Noon

Noon is an online shopping platform for customers in Egypt, offering authentic products across el...

Riyadh, United States5001–10000E-Commerce
Series ATotal funding$1.5BMay 2026
4
Lila Sciences

Lila Sciences combines artificial intelligence with autonomous laboratories to accelerate scienti...

Cambridge, United States51–200Artificial Intelligence, Biotech
Series ATotal funding$1.3BJun 2026
5
World Labs

World Labs is a spatial intelligence AI company building Large World Models (LWMs) to perceive, g...

San Francisco, United States11–50Artificial Intelligence, Infrastructure
Series ATotal funding$1.2BFeb 2026
6
Flapping Airplanes

Research-first AI lab pursuing data-efficient, brain-inspired model training approaches.

San Francisco, United States1–10Artificial Intelligence, Machine Learning
Series ATotal funding$1.0BOct 2026
7
Xaira Therapeutics

Xaira Therapeutics is an integrated biotechnology company driving advances in artificial intellig...

South San Francisco, United States51–200Artificial Intelligence, Biotech
Series ATotal funding$1.0BApr 2024
8
Pacific Fusion

Pacific Fusion was founded in 2023 to develop pulsed magnetic inertial fusion for abundant, affor...

Fremont, United States51–200Energy
Series ATotal funding$900.0MOct 2024
9
TypeSafe AI

TypeSafe AI develops Jev, an AI model that returns typed decisions with calibrated probabilities ...

United StatesArtificial Intelligence, Developer Tools
Series ATotal funding$870.0MOct 2026
10
Beeline Medicines

Beeline Medicines is a clinical-stage biotechnology company developing precision therapies for pe...

Boston, United States11–50Biotech, Healthcare
Series ATotal funding$852.6MJul 2026
11
Fluidstack

Fluidstack builds and operates data centers, combining hardware and software to deliver gigawatts...

San Francisco, United States51–200Artificial Intelligence, Cloud
Series ATotal funding$833.0MJan 2026
12
Hark

Seamlessly contextualize your customer's issue into a perfectly packaged service ticket deliverin...

San Francisco, United States1–10Retail, Artificial Intelligence
Series ATotal funding$703.5MMay 2026
13
Transmit Security

Transmit Security builds a modern, modular CIAM platform helping businesses deliver secure digita...

Tel Aviv, United States201–500Financial Services, Cybersecurity
Series ATotal funding$583.0MJun 2021
14
Biograph

Preventive health and longevity clinic offering 30+ advanced diagnostics in a single day to detec...

San Francisco, United States11–50Healthcare
Series ATotal funding$559.0MJan 2025
15
MoonPay

MoonPay is the leading on-ramp for crypto, allowing consumers to create a Web3 passport and pay f...

Miami, United States201–500Crypto & Web3, Fintech
Series ATotal funding$555.0MNov 2021
16
Uber Freight

Uber Freight is a managed transportation and logistics platform connecting shippers and carriers ...

Chicago, United States5001–10000Logistics
Series ATotal funding$500.0MOct 2020
17
Inertia

Inertia is developing commercial fusion power through modular high-power lasers, mass-manufacture...

Livermore, United States11–50Clean Energy, Deep Tech
Series ATotal funding$450.0MFeb 2026
18
Rhoda AI

Rhoda AI builds general-purpose foundation models that help robotic systems adapt across variable...

Palo Alto, United States11–50Robotics
Series ATotal funding$450.0MMar 2026
19
Aptos

Aptos Labs develops the Aptos blockchain, a Layer 1 network built with Move and parallel executio...

Palo Alto, United States51–200Crypto & Web3, Developer Tools
Series ATotal funding$350.0MJul 2022
20
Erebor

Digital bank for startups and cryptocurrency companies, founded by Palmer Luckey, targeting the g...

Columbus, United States51–200Fintech
Series ATotal funding$350.0MDec 2025
21
Ricursive Intelligence

Frontier AI lab developing self-improving systems that reinvent chip development and connect arti...

Palo Alto, United States1–10Artificial Intelligence, Semiconductors
Series ATotal funding$335.0MMar 2026
22
Nitra

Nitra offers a simpler, smarter way for healthcare practices to manage their spending and create ...

New York, United States11–50Fintech, Healthcare
Series ATotal funding$321.0MMar 2026
23
Focused Energy

Laser-driven fusion energy company building on NIF's foundation to develop clean, abundant fusion...

Darmstadt, United States51–200Climate Tech
Series ATotal funding$319.0MJun 2026
24
GondolaBio

GondolaBio develops breakthrough therapeutics for patients with genetic diseases, translating res...

Palo Alto, United States11–50Biotech, Healthcare
Series ATotal funding$300.0MAug 2024
25
Oratomic

Oratomic develops utility-scale quantum computers using light and atoms, with ultra-efficient err...

Pasadena, United States11–50Quantum Computing
Series ATotal funding$300.0MJul 2026