DFX Intelligence
Venture Capital Intelligence
Firms, funds, partners, companies and rounds from sworn filings, firm sites and announcements, kept as a graph with a date and a source on every edge. Facts, inferences and estimates are labelled as such. A fund target is never a close, GAV is never dry powder, and a round size is never an investor’s check.
Firms / Joule Ventures LLC
Joule Ventures LLC
Joule Ventures is a first-check fund for Israeli founders commercializing enterprise-grade solutions in U.S. markets.
name or self-description says seed
Importance
31
moderate
Active deployment
64
high
Emerging
0
low
Completeness
63
high
Freshness
100
high
Research priority
22
moderate
Identity and regulatory footprint
- Headquarters
- unknown
- Office address
- unknown
- Business phone
- 510-220-1110adviserinfo.sec.gov
- Website
- https://www.joulevc.com
- SEC adviser type
- exempt reporting adviseradviserinfo.sec.gov
- SEC exemption claimed
- venture capital fund adviseradviserinfo.sec.govItem 2.B(1): advises solely venture capital funds
- Latest Form ADV
- Mar 18, 2026
- Private funds reported
- 10 (10 venture capital funds)adviserinfo.sec.gov
- Private fund gross assets
- $183Madviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
- business email
- hi@joulevc.comjoulevc.compublished by the subject
- business phone
- 510-220-1110adviserinfo.sec.govpublished by the subject
Stated thesis versus observed behaviour
1 observed deals
Stated (the firm’s website)
- Sectors
- ai, enterprise software, fintech, cybersecurity, media
- Stages
- not stated or not yet read
- Geography
- atlanta, israel, new york
- Check size
- not stated; DFX does not estimate checks from round sizes
- Self-described
- seed
Observed (from deals on record)
Stage at participation
seed 100%
Stage at first entry
seed 100%
Sectors
unknown 100%
lead rate 0%follow-on rate 0%new logos, 12 months 1
Funds and vehicles
10 reported, 2 no longer reported
| Vehicle | Type | Vintage | Lifecycle | Reported GAV | Owners | Form D sold | Latest Form D |
|---|---|---|---|---|---|---|---|
| Joule SPV VI, LP | SPV or co-invest vehicle | 2025 form d first sale | Fundraising | unknown | unknown | $12.7M of $15.0M | Aug 19, 2025 |
| Joule Ventures V-A, L.P. | Feeder or parallel | 2024 form d first sale | Fundraising | unknown | unknown | $9.0M of $100M | Jun 18, 2026 |
| Joule Ventures Iv-A, LP | Feeder or parallel | 2023 adv first reported | Active deployment | $11.5M Mar 14, 2024 | 63 | unknown | unknown |
| Joule Ventures V, L.P. | Fund | 2023 form d first sale | Fundraising | unknown | unknown | $51.6M of $100M | Jun 18, 2026 |
| Janvest Capital Partners Opportunity Fund IV | Opportunity fund | 2022 adv first reported | Active deployment | $9.4M Mar 14, 2024 | 63 | unknown | unknown |
| Janvest Phe Bvcp Biocatch I, LLC | Fund | 2021 adv first reported | Mature | $10.8M Mar 14, 2024 | 10 | unknown | unknown |
| Janvest Capital Partners IV, LP | Fund | 2019 form d first sale | Mature | $36.9M Mar 14, 2024 | 97 | $33.2M of $100M | Jul 31, 2020 |
| Janvest Technologies B, LP | Fund | 2013 form d first sale | Harvest | $27.2M Mar 14, 2024 | 40 | $5.0M of $5.0M | Sep 29, 2015 |
| Janvest Capital Partners C, LP | Fund | unknown | Unknown | $19.7M Mar 14, 2024 | 65 | unknown | unknown |
| Janvest Capital Partners Opportunity Fund III | Opportunity fund | unknown | Unknown | $14.9M Mar 14, 2024 | 40 | unknown | unknown |
| Janvest Capital Partners Iv-A, LP | Feeder or parallel | 2021 adv first reported | Wound down | $6.8M Mar 19, 2021 | 25 | unknown | unknown |
| Janvest Technologies, LP | Fund | unknown | Wound down | $11.8M Dec 8, 2023 | 65 | unknown | unknown |
GAV is the gross asset value the adviser reported on Form ADV for the vehicle, never the fund’s committed size and never dry powder. Form D sold is the amount sold as of the latest filing, never a final close.
Investment team
5 current, 0 departed
Brian Howard Rosenzweig
PartnerPartner · since Jan 1, 2019
Brian Rosenzweig
PartnerPartner
Dafna Winocur Biran
PartnerPartner
Daniel Frankenstein
PartnerPartner
Daniel Hans Frankenstein
PartnerPartner · since Jan 1, 2019
Investments on record
1 edges, 1 companies, 0 partner-attributed
| Company | Round | Role | Partner | Round size | This investor | Date | Source |
|---|---|---|---|---|---|---|---|
| Corbel | Seed · Seed | participant | unknown | $6.7M | unknown | Oct 15, 2025 | Fact Press release wires (Business Wire, PR Newswire, GlobeNewswire public RSS) |
“This investor” is the amount disclosed for this investor alone; it is unknown unless a source said it. The round size is the whole round.
Co-investors
1 relationships from shared deals, counted for the whole firm
Limited partners
0 disclosed
No LP commitment on record. An LP edge needs a public disclosure with a quote: a pension report (see Limited partners for the plans read), a fund announcement naming the LP, or a Form ADV owner. The fund page carries the LP’s reported performance.
Timeline
13 dated events
- Sep 14, 2026Joule Ventures LLC: MULTI_STAGE_VC -> SEED_FUND_MANAGER (name or self-description says seed)Classification changedClassificationInferenceno URL
- Mar 14, 2024Janvest Technologies, LP no longer reported on Form ADV by Joule Ventures LLCFund no longer reportedFundsInferenceJanvest Technologies, LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Mar 16, 2023Joule Ventures Iv-A, LP first reported on Form ADV by Joule Ventures LLC (Venture Capital Fund), GAV $6,752,918Fund first reported on Form ADVFundsFactJoule Ventures Iv-A, LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Mar 29, 2022Janvest Capital Partners Opportunity Fund IV first reported on Form ADV by Janvest (Venture Capital Fund), GAV $4,000,250Fund first reported on Form ADVFundsFactJanvest Capital Partners Opportunity Fund IVSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Mar 29, 2022Janvest Capital Partners Iv-A, LP no longer reported on Form ADV by JanvestFund no longer reportedFundsInferenceJanvest Capital Partners Iv-A, LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Mar 19, 2021Janvest Phe Bvcp Biocatch I, LLC first reported on Form ADV by Janvest (Venture Capital Fund), GAV $1,799,946Fund first reported on Form ADVFundsFactJanvest Phe Bvcp Biocatch I, LLCSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Mar 19, 2021Janvest Capital Partners Iv-A, LP first reported on Form ADV by Janvest (Venture Capital Fund), GAV $6,801,231Fund first reported on Form ADVFundsFactJanvest Capital Partners Iv-A, LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Feb 20, 2020Janvest Capital Partners IV, LP first reported on Form ADV by Janvest (Venture Capital Fund), GAV $80,000,000Fund first reported on Form ADVFundsFactJanvest Capital Partners IV, LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Feb 20, 2020Janvest first filed Form ADV (ERA, venture capital fund adviser exemption)First SEC adviser filingOrganizationFactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Feb 20, 2020Janvest Capital Partners C, LP first reported on Form ADV by Janvest (Venture Capital Fund), GAV $25,000,000Fund first reported on Form ADVFundsFactJanvest Capital Partners C, LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Feb 20, 2020Janvest Technologies B, LP first reported on Form ADV by Janvest (Venture Capital Fund), GAV $11,000,000Fund first reported on Form ADVFundsFactJanvest Technologies B, LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Feb 20, 2020Janvest Capital Partners Opportunity Fund III first reported on Form ADV by Janvest (Venture Capital Fund), GAV $5,000,000Fund first reported on Form ADVFundsFactJanvest Capital Partners Opportunity Fund IIISEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
- Feb 20, 2020Janvest Technologies, LP first reported on Form ADV by Janvest (Venture Capital Fund), GAV $12,500,000Fund first reported on Form ADVFundsFactJanvest Technologies, LPSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Classification history
- Sep 14, 2026Seed fund manager (confirmed, 95%, cls-1)name or self-description says seed
- Sep 12, 2026Multi-stage venture firm (confirmed, 95%, cls-1)both early and growth/opportunity families, reported GAV $130M
Evidence
46 observations from 3 sources