Jetstream

What Jetstream does

Jetstream is a privately held, San Francisco-based pre-seed venture capital fund founded in 2019 by Tommy Leep, a Stanford graduate and Silicon Valley native who previously served as the first hire at Floodgate and held roles at Haystack, AngelList, and Congruent Ventures. The fund invests at the pre-seed stage in startups whose missions align with helping people live healthier, wealthier, and more resilient lives, with a portfolio of 50+ companies spanning climate technology, fintech, health, disaster recovery, EV charging, and the space and air economy. Jetstream positions itself around fast decision-making, founder accessibility, and follow-on funding support.

The fund's core product is a single investment vehicle that pairs early capital with structured community support: portfolio founders gain access to a 20+ person advisor network drawn from senior investors at Google, OpenAI, CRV, True Ventures, Haystack, Village Global, Maveron, Obvious Ventures, Footwork, Prelude Ventures, Spero Ventures, Toba Capital, Cantos, Halogen, Soundcheck, Streetlife Ventures, Angel Collective, Neo, and Swimming With Allocators for customer introductions, strategic guidance, and coordination on subsequent financing rounds. Notable portfolio holdings include Mercury (fintech), Presto (EV charging), Bright Harbor (disaster recovery), Electric Plant Co (plant intelligence), and Immortal (health).

Economically, Jetstream operates as a small, principal-led fund with 1-10 employees and no disclosed fund size, limited partners, AUM, or revenue. Returns are generated through equity ownership in portfolio companies, realized via follow-on rounds, acquisitions, or IPOs, with management fees providing baseline operating revenue. There is no public app, API, software product, or proprietary technology platform; the asset under management and customer concentration are not disclosed, and the firm has signaled thematic expansion into the space and air economy via a disclosed interest in Shield AI.

Name

Jetstream

Legal name

Jetstream

Website

https://jetstream.io

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

Jetstream is a privately held, San Francisco-based pre-seed venture capital fund founded in 2019 by Tommy Leep, backing 50+ startups in climate tech, fintech, health, and resilience sectors with early capital and a 20+ advisor community drawn from top venture firms.

Ownership category

akta.pro rank

Product category

Venture Capital

NAICS

Other Investment Pools and Funds (5259), Funds, Trusts, and Other Financial Vehicles (525), Other Financial Vehicles (525990)

SIC

Investment Advice (6282)

akta.pro primary industry

Early-Stage Venture Capital (Pre-Seed/Seed) (FSANAAAA)

akta.pro secondary industry

Micro-VC & Angel Funds (FSANAAAI)

Keywords

• Pre-seed venture capital
• Early-stage startup investing
• Venture capital fund
• Startup funding
• Founder community support

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Venture Capital Returns: As a pre-seed venture fund, Jetstream generates returns through equity ownership in portfolio companies. Returns are realized through follow-on funding rounds, acquisitions, and IPOs of portfolio companies.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Jetstream is a pre-seed venture capital fund that invests initial capital in early-stage startups and provides founders with community access, customer introductions, strategic guidance, and assistance in raising subsequent funding rounds. The fund focuses on founders building companies that help people live healthier, wealthier, and more resilient lives, making quick investment decisions and supporting portfolio founders through a network of investor advisors from top VC firms.

Product overview

Jetstream is a pre-seed venture capital fund that operates as a single, unified investment offering. The fund focuses on investing at the earliest stages, making quick decisions, and providing portfolio companies with community access, customer introductions, strategic guidance, and support for follow-on fundraising. Jetstream does not offer a platform with modular products; rather, its core offering is the venture fund itself, which backs founders across diverse sectors including climate technology, fintech, AI, sustainability, and healthcare.

Differentiator

Problem solved

Functional benefit

Products and services

• Jetstream Fund

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators3 records

Recent moves4 records

Expansion highlights4 records

Broad incumbents

• Y Combinator: The world's largest pre-seed accelerator, funding hundreds of startups per batch with standardized terms and a massive founder community; directly comparable stage and target founder profile to Jetstream, but vastly larger scale and brand.

Direct peers

• Floodgate: Early-stage VC firm where founder Tommy Leep began his VC career as the first hire; comparable pre-seed/seed focus on transformative technology companies and a similar founder-first orientation.
• Haystack: Early-stage venture fund that Tommy Leep worked with prior to Jetstream; comparable seed/pre-seed orientation, community- and founder-driven approach to early-stage investing.
• Congruent Ventures: Climate-tech-focused early-stage venture firm where Tommy Leep previously worked; directly comparable stage, check size, and emphasis on founders building for planetary resilience.
• Pioneer Fund: Pre-seed focused venture fund investing behind solo GPs and emerging managers; comparable check size, stage focus, and emphasis on community-driven deal flow.
• Antler: Global pre-seed VC that identifies and backs founders from scratch across multiple geographies and sectors; comparable pre-seed positioning and founder-development orientation.
• Hustle Fund: Pre-seed and seed venture fund explicitly targeting early-stage founders with community-led sourcing; highly comparable stage, thesis, and go-to-market motion to Jetstream.
• Pear VC: Pre-seed and seed venture firm backing founders at the earliest stages with strong community and follow-on support; comparable stage, founder-services model, and Bay Area base.
• Susa Ventures: Early-stage venture fund focused on seed and pre-seed technology companies; comparable check size range and emphasis on concentrated, founder-friendly investing.
• Cantos: Early-stage venture fund investing at pre-seed through Series A in deep-tech and frontier categories; comparable focus on high-conviction, early-stage checks with a community of operators.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/jetstream_io

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments48 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Jetstream