Energy technology · Oil & gas refining
E-TRON
A proprietary oil and gas refining process.
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Real estate · Venture · Private equity
We invest in real assets and the companies building what comes next
Stratosphere Capital invests across three strategies: commercial real estate, venture capital and private equity.
01
Commercial real estate
Passive LP investments in 12 multifamily communities alongside experienced sponsors, plus SilverSphere Capital development.
View LP investments 02Venture capital
15 angel investments plus the Seldor Capital fund portfolio.
View portfolio 03Private equity
E-TRON, a proprietary oil and gas refining process.
View investments01 · Commercial real estate
Asset-backed, cash-flowing property
We invest as a passive limited partner in value-add multifamily communities sponsored and operated by experienced partners, and develop new projects through SilverSphere Capital.
Multifamily LP investments
Limited partner positions in communities owned and operated by our sponsor partners.
- Communities invested in
- 12
- States: KY, NC, AZ, IL
- 4
- Total units across these communities
- 1,902
| Property | Location | Property units |
|---|---|---|
| Park Vista | Lexington, KY | 236 |
| Rise Parkside | Glendale, AZ | 352 |
| Edenbridge | Tinley Park, IL | 309 |
| Vineyard | Winston-Salem, NC | 134 |
| Diamond Ridge White | Winston-Salem, NC | 133 |
| Preakness I | Lexington, KY | 130 |
| Rise Westgate | Phoenix, AZ | 120 |
| Stonebridge | Lexington, KY | 113 |
| Diamond Ridge Red | Winston-Salem, NC | 100 |
| Little Creek | Winston-Salem, NC | 95 |
| Preakness II | Lexington, KY | 92 |
| Eastland Hills | Lexington, KY | 88 |
| Total property units | 12 communities | 1,902 |
Stratosphere Capital holds passive limited partner interests in these properties. Properties are owned and managed by their respective sponsors and operators. Unit counts reflect total property size, not Stratosphere's ownership share.
Development
SilverSphere Capital
A real estate development company building multifamily, mixed-use, hospitality, self-storage and warehouse projects, with off-market deal flow.
02 · Venture capital
Early-stage companies in space, energy and fintech
We back founders directly as angel investors and through specialist venture funds.
Angel investments
Mach33
Space investment platform
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Orbital Composites
Autonomous manufacturing on Earth and in space
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Interstellar Lab
Controlled-environment modules for crops and space
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Cosmic Shielding Corp
Plasteel radiation shielding
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Wave Motion
Jet-Gun supersonic launcher
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S.P.I.D.E.R.
Spaceport in Western Australia
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Tropical Weather
Hurricane and typhoon measurement
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Atomic Industries
Automated tool and die making
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Fluitec
Extends the life of industrial oils
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Sweater
Crowdfunding investment platform
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Fynn Credit
Loans for trade school students
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Fortivo Music
Music discovery
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Urbanred
Home essentials
LANCIO
Space-inspired digital art
TerraLaunch
Space venture vehicle co-founded by Stratosphere Capital
Funds
Seldor Capital portfolio
Fusematic
Portable friction welding systems
(opens in a new tab)Interstellar Lab
Controlled-environment modules for crops and space
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Cemvita
Synthetic biology for lower-carbon industry
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Lunasonde
Subsurface imaging from space
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Aphelion
Green in-space propulsion
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Aequor
Eco-friendly chemicals
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Rogue
Satellite vehicles and on-orbit services
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Lonestar
Data storage and edge processing from the Moon
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Swisspod
Lower-cost hyperloop technology
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Wyvern
High-resolution hyperspectral satellite imagery
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03 · Private equity
Energy technology with real-world assets
We structure direct investments in operating businesses where our energy industry experience adds value.
About
Josh Wagner, founder and managing director
Josh has more than 25 years of experience as an executive in the aerospace and oil and energy industries, and invests across real estate, angel and venture capital, and other alternative assets.
He is a graduate of the Virginia Military Institute, serves on boards focused on children's education and welfare, and is a member of Kiwanis International.
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We typically respond within two business days.