A spreadsheet is a wonderfully democratic object. It opens quickly, accepts almost anything and gives its owner the calming sensation that every important fact has a cell. It is also a precarious place to store who owns a company, which options belong to an employee and whether an investor signed off on a decision. Andy Choi saw that contradiction from both sides of the table. As a software engineer, he knew a system could be built. As a venture investor, he knew why the system mattered.
The mismatch became the starting point for Quota Lab, the Seoul company Choi co-founded in 2019. Its flagship product, QuotaBook, brought cap tables, securities history, stock options, governance and investor reporting into one online workspace. The initial proposition sounded almost aggressively sensible: founders and investors should be able to work from the same version of consequential financial information.
Sensible propositions still need selling. In the early days, companies accustomed to spreadsheets and documents asked why they should pay for a new service. Choi has recalled that Toss becoming a customer gave other startups a visible example. One trusted user did what a hundred feature lists could not. The unfamiliar category acquired a reference point.
A builder before a balance sheet
Choi's route into finance began with making things. He first encountered coding at an academy while he was in elementary school. At Daewon Foreign Language High School, with university approaching, he was drawn to computer science because code let him create something by himself and see a result immediately. He went to Carnegie Mellon University in Pittsburgh and completed undergraduate and master's study in computer science.
His professional life started in Chicago in 2010, where he developed infrastructure at an algorithmic-trading firm. Later engineering work took him through mobile payments and e-commerce. Those jobs put software beside money, transactions and operational detail, the mundane joints where an elegant idea has to survive contact with actual records.
Then he changed vantage point. In 2017, Choi joined K Cube Ventures, now Kakao Ventures, as an investment manager. The work exposed him to founders who were building modern products while administering their own ownership through Excel sheets, Word files and manual exchanges. An encounter with the American equity-management company Carta made the local gap easier to see. A practice can feel normal until a different system makes it look antique.
“It's all about digitising information and bringing it together on one platform.”Andy Choi on QuotaBook's essential mission
There was a useful irony in what followed. Choi has said that his time in venture capital initially convinced him not to become a founder. He watched entrepreneurs fight difficult battles every day and understood the cost with unusual clarity. Yet founders and investors reacted warmly when he tested the idea of digital securities management. The evidence gradually outweighed the warning. He and fellow former investors founded Quota Lab.
The spreadsheet was only the first clue
QuotaBook entered Y Combinator's Winter 2021 batch. That year, Quota Lab was also selected for South Korea's Baby Unicorn 200 program. In August 2022, the company raised an $11 million Series A led by Elefund, with Access Ventures, Hana Securities and other investors participating. At the time, Choi said the platform had more than 3,500 startup and investor users, and he outlined plans to grow the product team and expand in Southeast Asia.
From cap table to market plumbing
The product kept following the information. A company's cap table connects to employee stock options and restricted stock units. Governance connects to board and shareholder decisions. Investors need to monitor portfolios and report to the institutions that provide their capital. Quota Lab expanded from company equity administration into fund information, investment returns, limited-partner reporting and analytics. Its acquisition of Logos System in 2023 added established systems for fund operations and accounting.
This is the strategic move inside Choi's story: do not stop where the first customer finishes typing. Follow the record to the next person who depends on it. A founder issues a security. An employee receives a grant. A venture fund owns the asset. A limited partner needs a report. The same underlying truth keeps changing hands. Each handoff is an opportunity for delay, duplication or disagreement, and therefore an opportunity for infrastructure.
By 2024, Choi said Quota Lab served more than 5,000 customers and its software managed more than 3,800 funds. The company described meaningful use across startups, venture firms and the institutions behind those firms. Quota Lab also reported that its combined revenue with Logos System had risen from KRW 3.9 billion in 2020 to KRW 7.8 billion in 2023. The figures suggest a company moving beyond the charming stage when a founder can know every workflow by memory.
Scale changes the moral weight of software. A slightly awkward button is an inconvenience. An unreliable ownership record is a dispute waiting for a date. By January 2026, Quota Lab said its systems contained data associated with roughly KRW 110 trillion in assets. At that altitude, product design meets institutional responsibility. Choi's language has accordingly grown less like ordinary SaaS and more like public works.
The highway beneath the market
Choi has compared Quota Lab's work to laying a country's highways, financial infrastructure intended for the present generation and those that follow. It is a revealing metaphor. Highways are useful because they are dependable, shared and mostly ignored while working. Nobody frames a photograph of a clean database schema. Everyone notices when the road disappears.
His latest ambition brings that metaphor close to the state-regulated core of finance. South Korea has been preparing to allow specialized electronic registration for private-company shares. Quota Lab plans to pursue the opportunity through a consortium with established financial institutions. Choi's argument is that electronic registration touches property rights and therefore requires both fintech invention and institutional trust. The partnership model is meant to combine the two.
“Through the digitization of securities issuance, I want to turn the private market into a place where people trust systems rather than people.”Andy Choi, January 2026
The wording matters. Private markets have always relied on relationships, and Choi is not proposing a world without them. He is arguing that the record beneath a relationship should not depend on memory, possession of a paper contract or confidence in a particular intermediary. Systems can preserve the facts so people are free to spend their trust on judgment rather than clerical reconstruction.
What builders can borrow from Choi's playbook
- Watch for important work that users have normalized as annoying.
- Use a career change to collect another view of the same problem.
- Find a reference customer whose decision teaches the market.
- Follow shared data through every handoff, not only the first task.
- Treat trust as a product requirement once software carries real rights.
A company shaped like a career
Quota Lab makes more sense when read as a map of Choi's experience. Computer science supplied the instinct to formalize a messy process. Trading infrastructure showed that finance depends on dependable machinery. Payments and commerce brought him near systems that must reconcile reality with records. Venture capital revealed the users, their incentives and the precise spots where information went stale. Founding forced all of those observations into one product.
That combination also gave him a practical advantage when the product was young. As a former investment manager, Choi already understood the calendars, vocabulary and reporting obligations of the funds he hoped to serve. He also had relationships with prospective customers in startups and venture capital. As an engineer, he could see which inconveniences were symptoms of a deeper systems problem. Neither perspective alone guaranteed a company. Together, they shortened the distance between complaint and specification. The cap table was not an isolated document; it was an active record with consequences for fundraising, employee compensation, approvals and future transactions. QuotaBook could therefore begin with a narrow administrative task while pointing toward a much broader network. The humble opening was part of the design, not a limit on the ambition.
The connections also explain his long horizon. In 2022, he spoke about Southeast Asian markets including Vietnam, Indonesia, Singapore and Taiwan. Later he described reaching companies in India and other countries where private-market infrastructure remained early. International expansion is not simply a matter of translating buttons. Securities rules, business customs and institutional trust are local. The aspiration is nevertheless consistent: make a Korean-built system useful wherever private capital still travels through fragile files.
There is no cinematic villain in this story. Excel performed its assigned duties. The problem was that the duties outgrew the tool. Choi's sharpest observation was to see administrative boredom as a signal. When enough valuable decisions lean on a makeshift process, replacing it can become a consequential business.
His career has now traveled from writing infrastructure, to financing the people who build companies, to building infrastructure for their financing. The loop is neat, perhaps suspiciously so. Real careers rarely announce their theme in advance. Choi found his by paying attention to the paperwork everyone else had learned to work around.