Real wealth is built pre-IPO.
Invest in early-stage private companies before they ever go public. Access that used to take hundreds of thousands of dollars and the right connections, now it takes just $5,000.
Learn more about early-stage investing and interval funds.
We’ll send you an on-demand webinar and resources for investing in private companies.
THE BIGGEST BETS START EARLY
Before they were household names, they were venture bets.
Early investors backed these companies when their products, teams, and futures were still uncertain. That greater risk created the potential for outcomes that were no longer available once the companies became widely known.
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$585,000 → approximately $3.9 billion*
Sequoia’s early investment in Airbnb -
$250,000 → $78 million in two years*
Andreessen Horowitz’s investment in Instagram -
$8 million Series A → $1.9 billion acquisition*
Google Ventures led Flatiron Health’s early oncology-tech round
IT’S HAPPENING AGAIN
Right now, the next “Airbnb” is quietly raising its first round of funding.
No press release. No ticker symbol. Just a handful of investors writing checks before anyone else knows the company exists.
Take SpaceX — one of our portfolio companies. We held interest in early 2026, at a valuation 54% below its June ‘26 $1.77 trillion IPO price.
Hill Research, Shield AI, and others in our portfolio are still private. Any one of them could be the next Airbnb, Instagram or Uber.
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AI-powered autonomy software and V-BAT unmanned aircraft built for GPS-denied, contested environments.$12.7B current valuation, up 140% in the last 12 months.
$1.5B Series G, led by Advent International — Blackstone alone committed $750M.
V-BAT selected by the U.S. Navy for up to $800M in ISR services; also chosen by the Netherlands Ministry of Defence.
Acquired Aechelon Technology, adding recurring software revenue from flight-simulation contracts. -
Gene therapy platform aiming to turn a lifetime of medication into a single treatment — co-founded out of George Church's lab at Harvard Medical School.$59.4M current valuation.
Merck Animal Health is both an investor and an active R&D partner.
$13M+ in non-dilutive DoD/SOCOM funding.
100% clean safety record across nearly 3 years of canine trials; lead human cardiac program on track for an IND within ~12 months. -
GAI platform (TriClick™) that turns weeks of manual clinical biostatistics work into hours, without sacrificing regulatory compliance.4x revenue growth and 2x enterprise value growth, 2024 to 2025.
Delivers submission-ready TFL packages roughly 300x faster than manual processes.
Targeting another 5–7x revenue growth and 7–8x valuation growth in 2026.
NJEDA's Evergreen Innovation Fund joined as an LP alongside its lead investor. -
Built the world's largest HLA-matched allogeneic iPSC cell bank — enabling off-the-shelf cell therapies without immunosuppressive drugs.Immune-matched to 90%+ of the U.S. population, vs. ~30% for Japan's comparable government-backed CiRA initiative.
Took over a decade and $57M+ to build, protected by a 23-patent estate.
$42M in non-dilutive ARPA-H federal funding.
Founder Robin Smith has built and exited two prior life sciences companies (one to PerkinElmer/Revvity, one to KKR). -
Plasma-based reactors that convert CO₂ and industrial waste gas into usable chemical feedstocks — turning emissions into a resource instead of a liability.Converts 97%+ of CO₂ in a single pass, at 98%+ purity, fully electrified.
Under a minute of startup/cool-down time, letting facilities install only the capacity they need.
Backed by ARA Partners, a private equity firm with ~$5B under management focused exclusively on industrial decarbonization.
CEO David Soane has spent ~30 years founding and scaling advanced materials companies, including one that reached the Nasdaq. -
Jetstream invested pre-IPO in the company that just completed the largest IPO in Wall Street history.Valuation grew from ~$180B at Jetstream's entry to a $1.75T IPO on June 12, 2026 — roughly 8x growth in position value.
The IPO itself raised $75B, the largest public offering ever completed.
Starlink: 10M+ subscribers across 150+ countries, projected to generate $15–20B in revenue this year.
February 2026 acquisition of xAI extends the platform into AI compute. -
Non-invasive ultrasound neuromodulation platform treating autoimmune disease — no drugs, no surgery, used at home.First-in-human trial: statistically significant reductions in TNF-α and IL-6, the two cytokines most responsible for autoimmune inflammation, with zero device-related adverse events across 14 patients.
$6M raised, brought back by its full slate of existing seed investors — a strong signal of insider conviction.
Personally backed by Mir Imran, inventor of the world's first implantable cardiac defibrillator and founder of 20+ medical device companies.
3 active clinical sites now enrolling for its next feasibility study. -
NPortable, AI-supported Doppler ultrasound platform that detects peripheral artery disease (PAD) years before symptoms appear — addressing a 22-million-patient market that today's standard screening tools routinely miss.One of 10 companies selected globally for the 2026 Mayo Clinic and ASU Health Care Accelerator; Mayo Clinic holds a strategic equity stake.
AI model shows 90%+ independently verified predictive accuracy on tibial arterial Doppler waveforms.
69 patent claims filed across a utility application and PCT filing.
Existing FDA precedent (GuideAI Health's PAD detection tool, cleared June 2026) and existing CPT reimbursement codes already pave a proven regulatory and commercial path.
Meet the Jetstream Venture Fund, an interval fund making early-stage investing more accessible.
Jetstream Venture Fund gives investors access to a professionally managed portfolio of early-stage private companies, starting at $5,000 with no accreditation requirement.
Traditional VC
- Six-figure minimums
- Accredited investors only
- Locked up for years
- Fees plus carried interest
- Manual reporting
Jetstream
- Start at $5,000
- Open to everyone
- Twice-yearly liquidity
- No carried interest
- Simple 1099-DIV
TRADITIONAL VC
MINIMUM INVESTMENT REQUIRED
INCOME OR NET WORTH TEST
LIQUIDITY
FEES
TAXES
SHARE CLASSES
TRADITIONAL VC
$250,000 minimum
Accredited or qualified
5-10+ years
Fees plus carried interest
Manual reporting
Often favor large investors
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JETSTREAM
$5,000 minimum
No financial requirement
Semi-annual withdrawal*
No carried interest
Simple 1099-DIV
Same terms for everyone
JETSTREAM MOMENTUM
Getting in early isn't a theory. There’s a historical pattern.
From Instagram to SpaceX, the pattern repeats. The earliest investors capture value the public never gets. We invested in SpaceX while it was still private; it’s now worth over $1.77 trillion as a public company. It’s one of eight picks in the portfolio. Learn more about our investment strategy.
See Jetstream Through an Investor’s Eyes
Hear directly from a current Jetstream investor as he talks with Fund Manager Doug Sylvester about why Jetstream caught his attention and what ultimately gave him the confidence to invest.
PORTFOLIO MANAGER HIGHLIGHT
This isn’t John Shufeldt’s first company. It’s his fifteenth.
A physician, attorney, and pilot with three decades in healthcare entrepreneurship, John has founded 15+ companies and exited six, turning early bets into hundred-million-dollar outcomes.
01
Dedication to Life Long Learning
Every decade, John goes back to school — an MD, then an MBA, then a JD, then certificates in Six Sigma, AI (MIT), and entrepreneurship (Harvard). He’s never stopped rebuilding his own toolkit.
02
A Network Money Can't Buy
A recognized leader in Arizona’s innovation ecosystem, his decades across healthcare, law, and entrepreneurship give Jetstream access to deal flow most funds never see.
03
Building the Next Generation
In 2026, John launched the ASU John Shufeldt School of Medicine and Medical Engineering, training the physician-engineers who will build tomorrow’s healthcare companies.
04
A Track Record of Real Exits
Founded more than a dozen companies, successfully exited six — including MeMD (sold to Walmart), Tribal Health (sold to a large PE firm) and NextCare Urgent Care.
FEATURED ON
JOIN THE JETSTREAM
The next Airbnb is already raising money. Are you in?
We can’t promise the next Uber is already in the Jetstream portfolio — but that’s exactly the kind of company we’re looking for. When one of our bets pays off, the fund’s value can rise, and so can the price to get in. The earliest investors don’t just get in first. They get in cheapest.
$5,000 Minimum
No income requriement
Semmiannual Liquidity
Can request funds back twice a year
No Carry
Investors keep all profits
1099-DIV
For simple tax reporting
Early-stage investing doesn’t have to be complicated.
You don’t have to source deals, negotiate terms, or manage a portfolio yourself. Our team handles all of it — sourcing, vetting, and ongoing management — so all you have to decide is how much to invest.
1
Create your account.
Set up a secure investor account through our secure, third-party portal in under 10 minutes. You can invest as an individual, LLC, Trust or self directed IRA.
2
Fund your investment.
Choose how much you want to invest to start — add more anytime.
3
Our team manages it from there.
We source and vet startups, negotiate terms, and deploy capital on your behalf.
4
Watch your portfolio perform.
Log in anytime to view performance. You have the opportunity for redemptions every 6 months, total redeptions of the fund cannot exceed 5% of the total NAV.
See How Easy It Is to Get Started
Creating your Jetstream account is simple. Watch the quick walkthrough to see exactly what to expect, then take the first step toward accessing private-market investments.
Have questions about the portfolio or investing? Talk one-on-one with a Fund Manager.
See what’s happening before the IPO.
Get insights into early-stage investing, understand the interval fund structure, and discover the private companies already building what’s next inside the Jetstream Venture Fund.
GETTING STARTED
How do I sign up?
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Is there an approval process?
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Who is this fund for?
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Can I invest using an IRA, Trust, or LLC?
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ABOUT THE FUND
What is an Interval Fund?
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What does evergreen mean?
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How is an Interval Fund structured differently?
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What make this fund better than a traditional fund?
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What is your investment thesis?
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INVESTING & MINIMUMS
Is $5,000 the max I can invest?
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What is the redemption period?
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What are the fees?
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TAX & REPORTING
How is tax reporting handled for Jetstream?
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ABOUT US
Who is Sweater?
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Where can I find more information on Xcellerant Ventures?
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SUPPORT
How can I get technical assistance with my investor portal?
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Investors should consider the Fund’s investment objectives, risks, charges and expenses carefully before investing. The Fund’s prospectus contains this and additional information about the Fund, and can be obtained by emailing jetstream@sweaterfunds.com or by following this link. The Fund’s prospectus should be read carefully before investing. All investments involve risks, including possible loss of principal. Past performance of venture capital investments is no indication of future success.
