Billy Libby and the price of keeping your company

Billy Libby was at dinner with Jason Finger when his phone drew his attention away from the table. Libby was checking investments in quantitative trading funds after a volatile day. His portfolio had done well. Finger, who had co-founded Seamless, had a different sort of portfolio: technology startups whose eventual value was anybody’s guess. Each wanted access to the other’s opportunities. As Libby recalled, the next day they assembled a club of ten technology founders and ten quant founders. A distracted dinner guest had found a rather productive excuse.

That encounter supplies the opening scene for Upper90, the investment firm Libby co-founded in 2018. It also explains something about him. He had spent his working life around markets where information could be measured and prices adjusted. Finger knew the messier business of building a company. Put those experiences together and an ordinary startup funding question acquired an unfamiliar answer: perhaps some of the money could be borrowed.

The question sounds modest. Its consequences can be permanent. A founder selling shares to buy inventory gives up a piece of the company long after that inventory has left the warehouse. Libby’s work begins with this mismatch between a temporary need and a lasting claim. The financing announcement gets a day of applause. The ownership table has a much longer memory.

A trading education, measured in tiny decisions

Libby grew up in the Washington, DC, area, studied at Wharton in Philadelphia, and went to New York. His early experiences included work at the White House and investment banking in Hong Kong. Finance eventually gave him a more specific home: electronic trading. The field combined two interests he has described repeatedly, technology and data, with the speed of a market that rarely waits for anyone to finish a sentence.

He started at Goldman Sachs in 2003. His career also took him through Barclays and Virtu Financial; before Upper90, he headed quantitative execution and market-making sales at Goldman. These were businesses concerned with how orders move, how risk gets priced, and how technology changes the economics of repeated transactions. His eventual startup investing argument grew from that training. Better information should change the financing available to a business.

A company can be young and uncertain while containing something more predictable. A customer may already owe it money. A machine may have resale value. A recurring activity may produce cash that can be observed. Libby carries that distinction from public markets into private companies. The company’s ambition belongs in one conversation; the cash-producing activity deserves another. Combining them too casually makes the founder sell the same expensive shares for every kind of expense.

“It’s not how much you raise. It’s how much you own.”

Upper90’s operating thesis

Twenty people, two ways of seeing

The investment club made the difference in backgrounds useful. Quant investors and founders shared opportunities, and the gathering eventually became a fund. The club’s importance was more than social. Someone who has built a business can recognize a problem that looks ordinary from inside it. Someone trained to price risk can notice a financing possibility the founder has never considered. The same company can look quite different across the dinner table.

By May 2022, Upper90 had deployed $1 billion of capital and had a limited-partner base of more than 300 entrepreneurs. Those numbers describe a firm that had grown beyond its original club while retaining its premise: the investors could contribute operating knowledge and introductions alongside their commitments. For Libby, assembling people with different experiences was part of assembling an investment process.

That preference for community appears in another venture. He co-founded 3i Members with Mark Gerson and Teddy Gold in 2021. The membership network grew from an email chain into a place for private-market investors to exchange deals, evaluate opportunities, and meet. Its activities included idea dinners and diligence calls. There is a recognizable continuity here: start with people who know something, give them a reason to compare notes, and see what the conversation produces.

A network can be advertised as a list of names. The more interesting test is whether anyone actually picks up the phone. Libby’s ventures place that practical question near the center of the business. A founder needs capital, but may also need a customer introduction or someone who has hired the kind of executive they now require. A useful investor has work to do after the wire arrives.

Give the inventory its own financing

Upper90’s approach is easier to understand through the assets than through the industry vocabulary. Receivables are payments a business expects to collect. Inventory is stock it intends to sell. Equipment is something it uses to earn money. Libby looks for activities whose economics can support credit, including within companies too young to fit a conventional lender’s expectations. A startup label can obscure a fairly familiar financing need.

Libby draws a distinction between assessing an asset and relying on the reputation of a company’s venture backers. Traditional venture debt often sits alongside an equity round. Upper90 seeks repayment capacity in the business itself, allowing the credit conversation to happen earlier. That makes the quality of the underlying activity central: what produces cash, how consistently, and what happens if the assumptions fail?

The distinction matters because a business can contain several kinds of risk at once. Developing a new product is different from collecting an existing invoice. Buying equipment is different from finding out whether customers want the service. Treating every dollar as if it supports the same gamble hides those differences. Libby’s approach asks the financing to reflect them. It is an exercise in paying attention before it is an exercise in raising money.

The lender takes a seat beside the owner

Libby also wants the lender to care about the company’s eventual value. Upper90 combines credit with equity, giving it exposure to the business beyond loan repayment. In 2025, he described the usual lender as a temporary provider, present for a year or two or three. His firm wants an ownership interest that keeps the relationship going after a particular facility has served its purpose.

This helps explain the word “hybrid,” which otherwise sounds like something a dealer might offer with excellent mileage. The two instruments do different jobs. Credit finances an identifiable need. Equity supplies a continuing interest in the company. The arrangement cannot erase disagreements between borrowers and lenders, but it gives Libby a reason to think about the founder’s next stage as well as the current repayment schedule.

His public discussions return to the practical work behind that idea: evaluating unit economics, identifying market gaps, and meeting people in person. In April 2025, he emphasized networking and personal relationships in sourcing opportunities. After a career helping technology make markets faster, he still sees a use for being in the room. Some information travels neatly through a model. Some arrives because somebody trusts the person asking.

A driving school, a computer chip, a changing market

The examples can be refreshingly unglamorous. In 2023, Libby discussed Coastline, a technology-enabled driving-school business. A driving school has customers, operating costs, and a service people need to complete. Software may change how it runs; the financing question still concerns how the business earns money. Libby’s interest in such a company makes his ownership argument tangible. A useful business need not make its founder’s outcome depend on a spectacular valuation.

He also argued that founders should consider whether their lenders have equity in the business, and warned against choosing a facility simply because it is the largest available. Those points reveal the discipline inside his sales pitch. Access to capital is only one part of the decision. The relationship, the amount, and the permanent ownership consequences belong in the same calculation. More money can make an announcement impressive while making the underlying decision worse.

By April 2025, his examples included NVIDIA GPUs and the problem of financing newer equipment categories. Libby described Crusoe approaching Upper90 about equipment that banks did not yet understand well. The opportunity was to help finance an asset before it became familiar to conventional lenders. Here, his trading background and startup relationships meet again: recognize something measurable while the established market is still working out what to call it.

His public discussions also cover how assets become seasoned, market cycles, hiring, and diversification. It places his work in a less tidy setting than the slogan suggests. A financing model has to operate through changing prices and changing appetites for risk. The question of what a founder owns remains useful; answering it requires more than a clever structure at the beginning.

The ownership argument has to survive the cycle

In August 2022, Upper90 announced a $180 million initial closing for its third fund. At that point, the firm said it managed and had syndicated more than $2.2 billion across 43 portfolio companies. The wording matters: that figure combined managed and syndicated capital. It was a measure of the financing activity around the firm, rather than a simple claim about the size of a single fund.

The portfolio’s history also includes a difficult turn. Thrasio, the Amazon-brand acquirer that Upper90 backed early, entered Chapter 11 in February 2024. Its restructuring announcement described a plan to eliminate approximately $495 million of existing debt. The company’s later trouble belongs alongside its earlier growth. A collection of assets can support a financing thesis and still encounter operating and balance-sheet problems. Predictability is something to examine repeatedly.

By September 2024, Libby was publicly discussing companies outside the hypergrowth path, the disruption in private capital, and the work investors need to do with businesses. Those are natural subjects for someone whose argument has always involved the space between venture ambition and ordinary cash needs. When a company stops matching the growth story imagined for it, the financing still has to function.

The dinner with Finger began with two people wanting access to different investments. The career that followed has turned that curiosity into a persistent question about what founders keep. Libby’s proposition is concrete enough to remain interesting after the fundraising headlines fade: understand the activity, find capital that fits it, and consider the ownership consequences before signing. The founder will be living with the answer long after everyone has finished congratulating them.