/Companies

Atomic

YC S20

San Francisco, US · Founded 2020 · 25 employees · Hiring · 40 known investors

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Atomic Vest provides a white-label investment and savings platform for fintechs and financial institutions to offer wealth management, cash management, and brokerage services to their customers. The platform provides APIs, pre-built experiences, and back-office solutions covering fractional stocks, bonds, mutual funds, ETFs, and alternative investments.

Also known as Flux · Atomic Brokerage LLC · Atomic Invest · AtomicVest, Inc.

AI & Machine LearningEnterprise SoftwareFintechSaaSArtificial IntelligenceUnited States of AmericaAmerica / CanadaFully Remote

Founders & leadership· Y Combinator alumni (S20)

Atomic was founded in 2020 by David Dindi, Emma Marriott, and Marco Alban-Hidalgo.

DDDavid Dindi
David DindiCo-founder and CEODavid Dindi holds BSc and MSc degrees from Stanford University in Chemical Engineering and Computer Science, with an AI focus. He previously worked as a quantitative analyst at Makena Capital and as a quant at Evidence Based Portfolio Management, a family office in the DACH region.
EMEmma Marriott
Emma MarriottFounder
MAMarco Alban-Hidalgo
Marco Alban-HidalgoFounder

Investors · 40

Abacus Capital GroupreportedNew York

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AntireportedSan Juan · $250K – $30M

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Aquiline Technology GrowthreportedNew York

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Charles Delingpolereported

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Coughdrop CapitalreportedSeattle · $40K – $100K

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DASH VenturesreportedAmman

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Flux CapitalreportedLos Angeles · $250K – $5M

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L&S Venture CapitalreportedSeoul

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Venture Investment AssociatesreportedPeapack

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Wedbush VenturesreportedLos Angeles · $1M – $3M

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XG VenturesreportedMenlo Park

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Also in the syndicate · 6

AnthemisleadAppia VenturesErie Strategic VenturesIntuitIntuit VenturesNationwide Ventures

Funding

SEC filings, press & company announcements

$30M disclosed across 1 of 2 rounds · 2021–2025

Source: company announcements and press reports — follow each round's link for the claim.

Company profile

researched Aug 2026

Atomic (AtomicVest, Inc., branded Atomic Invest) operates an embedded investing and savings platform that fintechs, banks, insurers, brokerages and consumer brands use to offer investment products to their own customers. Its solution set spans wealth management (including custom/direct indexing and bond laddering delivered in an automated way), cash management accounts for individuals and businesses with access to FDIC-insured cash sweeps, money market funds and treasury bills, and brokerage covering fractional stocks and ETFs, fixed income, mutual funds and alternative investments across U.S. and international markets.

The platform is delivered through developer-first APIs, pre-built front-end experiences and a back-office dashboard for managing customer accounts, with the stated aim of removing the legal and operational work required to build brokerage in-house. Brokerage capabilities include custody, execution and clearing in up to 60 global markets, expanded fractionalization across stocks, corporate bonds, treasury bills, municipals and commercial paper, securities-backed lending with margin and non-purpose lending rates, and integrated reference and real-time market data.

Atomic positions its model as decoupling client-facing distribution of investing services from the underlying brokerage infrastructure and regulatory obligations, so partners can embed brokerage and wealth capabilities in a matter of weeks without making brokerage a core competency.

Business model

Business-to-business infrastructure: Atomic supplies regulated brokerage and advisory infrastructure, APIs and pre-built interfaces to partner institutions, which distribute the resulting investing and savings products to their own end customers. Atomic's broker-dealer subsidiary, Atomic Brokerage LLC, carries the regulated relationship with end investors, with clearing and custody provided by Pershing LLC and other clearing firms.

Traction

Over the year preceding the August 2025 financing, Atomic reported growing end-investor accounts 52x and processing more than $20 billion in annualized trading volume, serving partners including NerdWallet, Yieldstreet and Bluevine.

Latest developments

In August 2025 Atomic announced $30 million in growth capital led by Aquiline and Brewer Lane, with Nationwide Ventures, Intuit Ventures, Erie Strategic Ventures, Samsung Next, Appia Ventures and existing investors QED Investors, Anthemis and Y Combinator participating, earmarked for regulatory expansion, broadening the product suite and deeper work with banks, insurers and brokerages. The company also announced its expansion into Europe through the acquisition of Groene Hart Financiële Diensten.

▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies

Market position

Positioned as an investing-as-a-service provider addressing global wealth management, a market the company describes as roughly $100 trillion. It emphasizes regulatory standing as an SEC-licensed investment advisor and FINRA-registered broker-dealer, asset custody at BNY Pershing and Bank of New York Mellon, and annual SOC 2 Type II assessment.

End-to-end regulated stack combining advisory and broker-dealer licences, G-SIB custody, fractionalization extending beyond equities into corporate bonds, treasury bills, municipals and commercial paper, direct indexing, and trading access in up to 60 international markets, offered so partners can launch in weeks.

Technology

Developer-first APIs for integrating investing functionality, pre-built customer-facing experiences to shorten time to market, and a back-office dashboard for account management. Capabilities include fractional investing, direct indexing, global trading and custody, execution and clearing across up to 60 markets in the Americas, Asia, Africa, Europe and Australia, plus embedded reference and real-time pricing data.

Go-to-market

Direct enterprise sales to fintechs, banks, insurers, brokerages and consumer brands, with implementation options ranging from API integration to pre-built experiences; the site drives prospects to a "talk to us" contact flow.

Financial institutions seeking to retain deposits and add digital wealth self-service, consumer fintechs adding wealth-building features for retention, and B2B fintechs offering treasury services to business customers. Named partners include NerdWallet (consumer finance), Yieldstreet (private-markets investing) and Bluevine (business banking).

Geography

Headquartered in New York with team members across multiple locations; the company announced expansion into Europe through the acquisition of Groene Hart Financiële Diensten, and supports market access across the Americas, Asia, Africa, Europe and Australia.

History

Founded in 2020 by Emma Marriott, Marco Alban-Hidalgo and David Dindi, with David Dindi serving as CEO. The company built a regulated stack including SEC-registered advisory and the FINRA-registered broker-dealer subsidiary Atomic Brokerage LLC, and in August 2025 announced $30 million in additional growth capital to fund regulatory expansion and international scale. It has also announced a European expansion via the acquisition of Groene Hart Financiële Diensten.

Risks & controversies

As a regulated broker-dealer and investment advisor, Atomic's operations depend on maintaining FINRA and SEC registrations and on third-party clearing and custody relationships with Pershing LLC and other clearing firms; the company's own disclosures note that investing involves risk, including potential loss of principal.

Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
Annualized trading volumeAug 2025$20B
End-investor account growth (trailing year)Aug 202552x
Global markets supported for custody, execution and clearingJan 202560 markets

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

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Companies working in the same space as Atomic.

Timeline · 2

launches, deals, and filings
Aug 2025
Atomic raises $30 million in growth capital

Atomic announced an additional $30 million in growth capital led by Aquiline and Brewer Lane, with participation from Nationwide Ventures, Intuit Ventures, Erie Strategic Ventures, Samsung Next, Appia Ventures and existing backers QED Investors, Anthemis and Y Combinator, to fund regulatory expansion and scaling of its investing platform.

$30M source ↗

Jan 2025
Acquisition of Groene Hart Financiële Diensten to expand into Europe

Atomic announced European expansion through the acquisition of Groene Hart Financiële Diensten.

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

In the news

▸Research sources · 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Atomic do?
Embedded investing-as-a-service platform letting fintechs and financial institutions offer brokerage, wealth and cash products.
Who founded Atomic?
Atomic was founded by David Dindi, Emma Marriott, Marco Alban-Hidalgo in 2020.
Who are Atomic's investors?
Atomic's investors include Anthemis Venture, Brewer Lane Ventures, Collide Capital, Evolution VC Partners, Innovation Global Capital, Kube VC, Open Opportunity Fund, QED Investors and 26 more.
How much funding has Atomic raised?
Atomic has disclosed $30M raised across 1 of its 2 known rounds.
Where is Atomic headquartered?
Atomic is headquartered in San Francisco, US.