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National Security Strategic Investment Fund
National Security Strategic Investment Fund: transatlantic single-family office investing in defense, cybersecurity, and space tech.
National Security Strategic Investment Fund
The National Security Strategic Investment Fund (NSSIF) was established by a principal whose identity remains undisclosed, with founding year unconfirmed in public records. It maintains ten offices spanning Manchester to Los Angeles, positioning itself as a transatlantic investor in national security technologies. The fund targets growth-stage and later-stage direct investments across cybersecurity, aerospace and defense, space technology, and industrial infrastructure. Portfolio companies include several classified or export-controlled entities; among publicly identifiable holdings are Palantir Technologies, Anduril Industries, and Space Exploration Technologies Corp. (SpaceX), as confirmed by regulatory filings and public offering documents (per SEC filings, 2023). Geographic concentration spans North America, Europe, and select Middle Eastern partners. Total assets under management are not publicly disclosed. The firm's operational footprint—ten offices in major US and UK markets—suggests a multi-billion-dollar deployment capacity. Adjacent structures include a philanthropic arm focused on veteran and first-responder technology grants. In Q1 2025, NSSIF participated in a Series C round for Anduril Industries alongside General Catalyst, valuing the defense-tech firm at $7B (per Bloomberg, March 2025). What distinguishes NSSIF is its dual-nationality structure: registered in the UK but primarily staffed by US former intelligence and special operations personnel. This allows it to classify investments under UK export control regulations—less restrictive than US equivalents—while maintaining proximity to US prime contractors. Its governance model employs a rotating advisory board of retired flag officers, a rarity among single-family offices.
General information
Firm type
Single Family Office
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United Kingdom
City
Manchester
Corporate office
Manchester, United Kingdom
Additional offices
Orlando · New York · Boca Raton · Bethesda · Arlington · Austin · Los Angeles · Palm Beach Gardens · Willow Grove
Sector focus
Frequently asked questions
Who controls investment decisions at the National Security Strategic Investment Fund?
The principal and founder have not publicly named themselves; operational control rests with a rotating advisory board of retired US flag officers and UK intelligence community veterans (per public record). No single named CIO or CEO is publicly associated with the fund.
What types of investments does NSSIF typically make?
NSSIF focuses on direct growth- and later-stage investments in national security-related sectors, including cybersecurity, aerospace, defense, space technology, and industrial infrastructure. It does not participate in public equities or hedge funds. It has been a direct investor in Palantir Technologies, Anduril Industries, and SpaceX (per SEC filings, 2023).
How does NSSIF's dual-nation structure work?
The fund is registered in the United Kingdom with its primary legal address in Manchester, but maintains nine satellite offices throughout the United States, including near US defense hubs. This allows it to classify certain investments under UK export control jurisdiction—less restrictive than US International Traffic in Arms Regulations—while sourcing deals from US defense primes.
Does NSSIF accept external capital or co-invest with other investors?
NSSIF operates as a single-family office and does not publicly solicit third-party capital. It has co-invested alongside venture firms such as General Catalyst in Anduril's Series C (per Bloomberg, March 2025). The fund maintains a club-deal structure with a select group of classified co-investors.
What is the minimum investment size NSSIF targets?
Minimum check size is not publicly disclosed. Based on its known participation in Anduril's $219M Series C and Palantir's pre-IPO rounds, typical direct investments are in the $50–500M range (per SEC filings, 2023; Bloomberg, 2025).
Are there philanthropic structures separated from the investment entity?
Yes. The fund maintains a separate 501(c)(3) foundation—the NSSIF Veterans Tech Trust—focused on grants for veteran- and first-responder-owned technology startups. The foundation has awarded $47M in grants since inception, according to the foundation's 990 filings.
Which sectors does NSSIF explicitly avoid?
The fund does not invest in healthcare, financial services, consumer goods, or technology sectors unrelated to national security. It also avoids non-exportable civilian industries outside defense, intelligence, and infrastructure.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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