SpaceNexus Most Active Space Investors

Which investors led the most disclosed space funding rounds in the quarter, and over the trailing twelve months.

Data as of 2025-12-31 · computed 2026-09-15

← Q3 2025 Q1 2026 →All editions

Back-computed edition

This period closed before the release began publishing on a calendar. The figures are computed from the same tables, but this is a back-calculation rather than what we would have published at the time. Scheduled editions begin with 2026-Q2.

Rounds recorded: 19
Disclosed capital: $12.5B
Rounds naming a lead: 14 of 19
Distinct lead investors: 14

Lead investors, Q4 2025

Investors ranked by the number of rounds they are recorded as leading inside the quarter.

Lead investors, Q4 2025. Investors ranked by the number of rounds they are recorded as leading inside the quarter. Showing the first 10 of 14 rows.
#	Investor	Rounds led	Disclosed total	Median round	Sectors backed	Companies
1	Fidelity Investments	1	$10.00B	$10.00B	launch	SpaceX
2	US Innovative Technology Fund	1	$510.0M	$510.0M	launch	Stoke Space
3	Altimeter Capital / Lightspeed	1	$350.0M	$350.0M	defense

Lead investors, trailing twelve months

The same ranking over the four quarters ending with this one — the stabler table, and the one to cite for "most active".

Lead investors, trailing twelve months. The same ranking over the four quarters ending with this one — the stabler table, and the one to cite for "most active". Showing the first 10 of 50 rows.
#	Investor	Rounds led	Disclosed total	Median round	Sectors backed
1	Fidelity Investments	2	$12.00B	$6.00B	launch
2	Founders Fund	2	$2.55B	$1.27B	defense; manufacturing
3	Eric Schmidt	1	$800.0M	$800.0M	launch
4	US Innovative Technology Fund

Investor participation, Q4 2025

Investors ranked by rounds they appear in at all, lead or otherwise. A different question from the lead table, and a weaker denominator.

Investor participation, Q4 2025. Investors ranked by rounds they appear in at all, lead or otherwise. A different question from the lead table, and a weaker denominator. Showing the first 10 of 22 rows.
#	Investor	Rounds	Disclosed round value	Sectors
1	Baillie Gifford	1	$10.00B	launch
2	Fidelity Investments	1	$10.00B	launch
3	General Atlantic	1	$10.00B	launch
4	Sequoia Capital	1	$10.00B	launch
5

Leads new to the table

Investors who led a round this quarter and led none in the previous 4 quarters of our records.

Leads new to the table. Investors who led a round this quarter and led none in the previous 4 quarters of our records. Showing the first 10 of 13 rows.
Investor	Rounds led	Disclosed total	Companies
US Innovative Technology Fund	1	$510.0M	Stoke Space
Altimeter Capital / Lightspeed	1	$350.0M	Castelion
Redpoint Ventures	1	$250.0M	K2 Space
General Catalyst	1	$216.0M	ICEYE
ESA European Launcher Challenge (Germany, UK)	1	$205.7M	Rocket Factory Augsburg
NightDragon / Center15 Capital

Rounds behind these tables

Every round recorded in the quarter, largest disclosed first, with its source. This is the row set the tables above are computed from.

Rounds behind these tables. Every round recorded in the quarter, largest disclosed first, with its source. This is the row set the tables above are computed from. Showing the first 10 of 19 rows.
Date	Company	Sector	Stage	Amount	Lead	Source
2025-12-15	SpaceX	launch	Tender Offer	$10.00B	Fidelity Investments	Bloomberg
2025-10-09	Stoke Space	launch	Series D	$510.0M	US Innovative Technology Fund	Aviation Week
2025-12-05	Castelion	defense	Series B	$350.0M	Altimeter Capital / Lightspeed	PR Newswire
2025-12-12

Methodology

Every figure is a count or a sum over the FundingRound table joined to the company profile. No estimate, model or projection is used anywhere in this release.
A round is attributed to the quarter its announced date falls in, in UTC.
A round counts toward an investor only when that investor is recorded as the LEAD. Participation without a lead credit is not counted, because we do not hold complete participant lists and a partial one would rank the wrong firms.
Rounds with an undisclosed amount are counted in the round count and contribute $0 to totals. Totals are therefore a floor, never an estimate.
Ranking is by rounds led, descending; ties break on disclosed total, then on investor name (A–Z), so the table is reproducible.
"New to the table" means the investor led no recorded round in the previous four quarters. It is a statement about our records, not about the firm.

What this edition can and cannot see

Coverage limits travel with the numbers, here and in every export of them.

This edition sees 19 rounds recorded for the quarter, of which 19 disclosed an amount. Totals are a floor, not an estimate.
14 of 19 rounds name a lead investor (73.7%). Every lead ranking on this page is computed over that subset only.
5 of 19 rounds carry a wider investor list. The participation table is computed over that subset, and it is the weaker of the two attributions.
Our round coverage is built from regulatory filings, company announcements and cited press coverage. It is not a census of the market, and an investor absent from a table may simply be absent from our records for that quarter.
Sector is taken from the company profile as it stands today, so a company that changed sector is reported under its current one in every quarter.
Every figure on this page is a count, a sum, a median or a ratio over our own rows. Nothing is model-generated, estimated or projected.

Cite this edition

Cite or embed this data

Citation

SpaceNexus Most Active Space Investors, Q4 2025. SpaceNexus, data as of 2025-12-31. https://spacenexus.us/releases/most-active-investors/2025-Q4. https://spacenexus.us/releases/most-active-investors/2025-Q4 (retrieved 2026-09-15).

Free to cite and embed with attribution. Data updates continuously; the citation date pins your retrieval.

By the SpaceNexus Desk

AI-drafted analysis, fact-checked before it publishes

Drafted by AI, fact-checked before publishing, corrected in public. How the desk works