Most of the space industry is sold as a photograph: a rocket clearing the tower, exhaust lit gold against a coastline. Seldor Capital, a small venture firm run out of New York, is interested in a less cinematic document - the customer invoice. Its founders will look at a startup building hardware for orbit and ask a question that quietly reorders the whole pitch: does the technology do anything useful on the ground?
If the answer is no, they usually pass. If the answer is yes - a welding process that repairs satellites in orbit but also cuts emissions in a factory, a closed-loop greenhouse designed for Mars that happens to grow food in a drought - the conversation gets serious. That filter is the firm in one sentence. Seldor treats the space economy less as a frontier and more as infrastructure whose returns are ultimately booked on Earth.
01 — The thesisSpace, read as an Earth business
Seldor Capital describes itself plainly: it invests in startups working with space technologies and their applications. The founding story on its site is equally modest - the team had spent years around space startups and early-stage companies that needed funding, guidance and a support system, and built a firm to be that system. What sharpens it is the destination. The stated aim is to create a positive impact on the planet and contribute to sustainable development by harnessing the power of space businesses.
That framing explains a portfolio and a focus list that would look eccentric coming from a pure aerospace fund. Alongside telecommunications and transportation, Seldor lists precision agriculture and food security, health, advanced manufacturing, energy and environmental control among its target sectors. It is a space fund that spends a lot of its language on the ground.
Where Seldor looks — target sectors
02 — The founderFrom the World Bank to the launch pad
Seldor was founded in 2020 by Sidney Nakahodo, a Brazilian-American investor whose route into venture capital did not run through a typical Silicon Valley track. He trained as a materials engineer at the University of São Paulo's Escola Politécnica, took graduate coursework at Harvard, and earned a Master of International Affairs at Columbia's School of International and Public Affairs. Before Seldor he worked at the World Bank, advising governments, corporations and startups on strategy and finance.
He still teaches. Nakahodo serves as adjunct faculty at Columbia SIPA, where his work sits at the intersection of public policy, innovation and technology - the same three-way intersection the firm invests around. He is also a Singularity University fellow. The background matters because it shapes the fund's edge: not the biggest check in the room, but an unusually policy-literate read on which space technologies have a real market and a real regulatory path.
03 — The teamSpecialists, not a spreadsheet
For a firm of roughly eleven people, the bench is deliberately technical. Steven Gonzalez, a venture partner, spent more than three decades at NASA as a strategist and technology-transfer specialist - the exact skill of moving space technology into the commercial world. Alan Pereira, a New York State attorney with more than a decade inside international organizations including the World Bank, covers the legal and institutional side. Roberto Alvarez, described as a serial entrepreneur and "super-connector," runs a Washington trade organization and works the network. It is a team built to answer three questions at once: will the technology work, will it sell, and will the rules allow it.
Portfolio, by what it actually does
Illustrative grouping of publicly reported holdings - not weighted by investment size.
04 — The portfolioAmphibious by design
The clearest way to understand Seldor is to look at what it backed. In March 2022 it became the first institutional investor in Rogue Space Systems, a startup building robotic spacecraft - "Orbots" - to inspect, service and eventually repair other satellites, turning in-orbit servicing from a demo into a business. It put money into Interstellar Lab, whose closed-loop, controlled-environment "BioPods" were conceived for life support off-world but map directly onto food security and agriculture on Earth.
Then there is Fusematic, the tidy proof of the whole thesis. Its fusion-welding process is pitched for repairs in the vacuum of space and underwater and for lower-emission manufacturing on the ground - one technology, three environments, a customer in each. Other holdings include Swisspod in transport, Luna Sonde and Aequor in sensing and sustainable industry, and Lonestar Lunar. The pattern repeats: pick technology that refuses to stay in one environment.
05 — The marketWhere it fits, and who it isn't
The space-investing field has bigger names - Space Capital, Seraphim Space, Promus and a rotating cast of deep-tech generalists who dip in for a marquee round. Seldor is not trying to out-fund them. It fits into an earlier, smaller slot: the first-check or early-round investor that shows up when the physics is proven but the market is still a hypothesis, and brings operator and policy help rather than a large balance sheet. In a sector that is capital-hungry and hype-prone, being small, early and technical is a position, not a limitation.
The business model underneath is ordinary venture: raise from limited partners, deploy into early-stage equity, return gains through appreciation and exits. The differentiation is the sorting function. Where a generalist optimizes for the biggest possible orbital story, Seldor optimizes for the technology that already has a reason to exist on Earth - and lets space be the upside rather than the entire bet.
06 — What you can take from itThe dual-use filter, borrowed
You do not need a space fund to use Seldor's move. The transferable idea is the dual-use filter: before backing - or building - something exotic, ask whether it earns its keep in a market that already exists. It is a discipline that turns speculative categories into fundable ones, and it is why a firm that talks about orbits spends so much time on pollution, food and energy. The rocket is the headline. The point is what the payload does when it comes back down.