J4.Ventures
VC Fund
New City, United States
J4.Ventures is a VC fund in New City focused on Financial Services and Information Technology. Early stage technology and technology enabled businesses
- Total investments:
- 33
- Last investment:
- Lead investor:
- 6%
Last updated:
For AI agents: llms.txt
Industries J4.Ventures invests in
Stages J4.Ventures invests in
Countries J4.Ventures invests in
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Jamie Rapperport
|
|||
Investment Focus
Industry
- Financial Services 8 (24%)
- Information Technology 7 (21%)
- Artificial Intelligence 6 (18%)
- FinTech 5 (15%)
- Software 4 (12%)
Stage
- Seed 11 (33%)
- Pre-Seed 11 (33%)
- Convertible Note 5 (15%)
- Series A 2 (6%)
- Funding Round 1 (3%)
Country
- United States 25 (76%)
- India 1 (3%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Bruce Jaffe
General Partner
|
General Partner | Total investments: 10 | Find email | |
|
Jamie Rapperport
General Partner
|
General Partner | Total investments: 1 | Find email |
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Hearvana
|
Hearvana is a IT consulting company. | $6M / Pre-Seed / Nov 05, 2025 | |
Ethosphere
|
Ethosphere is changing the brick-and-mortar retail game through innovative voice-AI technology that drives incredible employee experiences, next-level customer engagement, and unparalleled brand insights. | $2.5M / Pre-Seed / Sep 16, 2025 | |
Tough Day
|
Tough Day enables companies to provide employees with a safe place for candid conversation and expert guidance to resolve their workplace issues before they become messy, costly problems.When work gets tough, the tough get working. | $1.6M / Pre-Seed / Jun 01, 2025 | |
Sonar
|
Sonar is a healthcare company focusing on the proactive identification and intervention of mental health challenges in youth. | $2.4M / Pre-Seed / Feb 24, 2025 | |
Scout
|
Scout is a financial planning company that offers financial education, wealth management, and tax preparation services for athletes. | Seed / Jan 30, 2025 | |
Sound Health
|
Sound Health uses acoustic resonance to provide nasal relief. Its current product is an app that scans the face to map the bone structure and then a headband that plays music at personalized frequencies for 10 minutes. The headband is off the shelf and the sound levels are akin to wearing earpods. It envisions the headband to be over-the-counter(OTC) so it’s easily accessible to patients, whether prescribed by doctors or not. | $7M / Seed / Jul 24, 2024 | |
Molten Industries
|
Molten Industries develops clean technology with the goal of decarbonizing the hydrogen market. The company's technology generates the most affordable and environmentally friendly hydrogen. | $25M / Series A / Jun 20, 2024 | |
Refer
|
Referring people to their ideal jobs. | $2.5M / Pre-Seed / May 01, 2024 | |
Take2 AI
|
take2 is an online marketplace platform that provides a place for job seekers to display the skills required to land a job. | $5M / Seed / Apr 16, 2024 | |
Reset Financial Technologies
|
Reset is an earned-wage access platform that offers employees financial wellness and increases employee retention across industries through mission-driven technology. | $2.3M / Pre-Seed / Feb 29, 2024 | |
| See all 33 investments → | |||
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FAQ
What does J4.Ventures invest in?
J4.Ventures invests primarily in Financial Services, Information Technology and Artificial Intelligence startups, most often at Seed and Pre-Seed stage. Most of the 33 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact J4.Ventures?
Public channels for J4.Ventures include LinkedIn and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at J4.Ventures?
The team at J4.Ventures includes Bruce Jaffe (General Partner) and Jamie Rapperport (General Partner). The Team section lists each member with their title, investment count and links.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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