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 / Pioneer Fund

Pioneer Fund

Multi-stage venture firmToronto, Ontariopioneerfund.vcSEC venture capital fund adviser

500+ Y Combinator alumni investing in the top YC startups.

both early and growth/opportunity families, reported GAV $71M

Importance
27
moderate
Active deployment
33
moderate
Emerging
0
low
Completeness
63
high
Freshness
100
high
Research priority
13
low
Identity and regulatory footprint
Headquarters
Toronto, Ontario, Canadaadviserinfo.sec.gov
Office address
22 ST CLAIR AVE EAST SUITE 1500, Toronto, Ontario, M4T2S3adviserinfo.sec.gov
Business phone
14156505052adviserinfo.sec.gov
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 28, 2024
Private funds reported
15 (15 venture capital funds)adviserinfo.sec.gov
Private fund gross assets
$72.4Madviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
business email
stuff@pioneerfund.vcpioneerfund.vcpublished by the subject
business phone
14156505052adviserinfo.sec.govpublished by the subject
Stated thesis versus observed behaviour
2 observed deals
Stated (the firm’s website)
Sectors
not stated or not yet read
Stages
not stated or not yet read
Geography
not stated
Check size
not stated; DFX does not estimate checks from round sizes
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 2
Funds and vehicles
14 reported, 4 no longer reported
VehicleTypeVintageLifecycleReported GAVOwnersForm D soldLatest Form D
Pioneer Opportunity Fund, LP - B4Opportunity fund2024 adv first reportedEarly deployment$1.5M
Mar 28, 2024
37unknownunknown
Pioneer Fund III (U.S.) L.P.Fund2023 form d first saleFundraising$8.4M
Mar 28, 2024
21$39.5MMay 6, 2025
Pioneer Ai Fund, LPFund2023 form d first saleActive deployment$4.2M
Mar 28, 2024
56$3.4M
of $20.0M
Aug 16, 2023
Pioneer Fund Af 24 L.P.Fund2023 form d first saleActive deployment$2.5M
Mar 28, 2024
157$4.7MJul 12, 2024
Pioneer Bio Health Fund, LPFund2023 form d first saleActive deployment$2.3M
Mar 28, 2024
48$1.1M
of $10.0M
Mar 2, 2023
Pioneer Opportunity Fund, LP - B1Opportunity fund2023 form d first saleActive deployment$1.4M
Mar 28, 2024
45$2.0M
of $2.5M
Jan 12, 2023
Pioneer Opportunity Fund, LP - B2Opportunity fund2023 form d first saleActive deployment$736,032
Mar 28, 2024
39$1.9M
of $1.9M
Aug 21, 2023
Pioneer Opportunity Fund, LP - A4Opportunity fund2022 form d first saleActive deployment$1.5M
Mar 28, 2024
55$1.6M
of $2.1M
Oct 25, 2022
Pioneer Opportunity Fund, LP - A2Opportunity fund2022 form d first saleActive deployment$1.4M
Mar 28, 2024
52$1.6M
of $2.1M
Apr 8, 2022
Pioneer Opportunity Fund, LP - A1Opportunity fund2022 form d first saleActive deployment$1.1M
Mar 28, 2024
51$1.6M
of $2.1M
Mar 24, 2022
Pioneer Opportunity Fund, LP - A3Opportunity fund2022 form d first saleActive deployment$837,155
Mar 28, 2024
53$4.9M
of $5.4M
Jul 14, 2022
Pioneer Fund Access Fund LP, a Series of Pioneer Master Fund LPSPV or co-invest vehicle2021 form d first saleMature$2.8M
Mar 28, 2024
77$3.4M
of $3.4M
Mar 3, 2023
Pioneer Fund II (US) L.P.FundunknownUnknown$28.7M
Mar 28, 2024
68$0Oct 7, 2020
Pioneer Fund II (alumni) L.P.FundunknownUnknown$13.5M
Mar 28, 2024
220$0Oct 7, 2020
Pioneer Fund C, a Series of Pioneer Fund Syndicates, LLCSPV or co-invest vehicle2022 adv first reportedWound down$9.4M
Mar 31, 2023
43unknownunknown
Pioneer Fund C LPFund2022 adv first reportedWound down$2.7M
Mar 31, 2023
5unknownunknown
Pioneer Fund B, a Series of Pioneer Fund Syndicates, LLCSPV or co-invest vehicle2022 adv first reportedWound down$1.1M
Mar 31, 2023
17unknownunknown
Pioneer Fund a, a Series of Pioneer Fund Syndicates, LLCSPV or co-invest vehicle2022 adv first reportedWound down$700,000
Mar 31, 2023
4unknownunknown
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
2 current, 0 departed
Investments on record
2 edges, 2 companies, 0 partner-attributed
CompanyRoundRolePartnerRound sizeThis investorDateSource
OrthogonalSeed · Seedparticipantunknown$4.3MunknownJun 25, 2026Fact Press release wires (Business Wire, PR Newswire, GlobeNewswire public RSS)
YC F25 Startup MultifactorSeed Round · Seedparticipantunknown$15.0MunknownDec 4, 2025Fact 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
16 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
24 dated events
  1. Mar 28, 2024
    Pioneer Fund C, a Series of Pioneer Fund Syndicates, LLC no longer reported on Form ADV by Pioneer Fund
  2. Mar 28, 2024
    Pioneer Fund C LP no longer reported on Form ADV by Pioneer Fund
  3. Mar 28, 2024
    Pioneer Opportunity Fund, LP - B4 first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $1,491,825
  4. Mar 28, 2024
    Pioneer Fund a, a Series of Pioneer Fund Syndicates, LLC no longer reported on Form ADV by Pioneer Fund
  5. Mar 28, 2024
    Pioneer Fund Ng, LLC, a Series of Pioneer Fund Syndicates, LLC no longer reported on Form ADV by Pioneer Fund
  6. Mar 28, 2024
    Pioneer Opportunity Fund, LP - B1 first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $1,365,403
  7. Mar 28, 2024
    Pioneer Opportunity Fund, LP - B2 first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $736,032
  8. Mar 28, 2024
    Pioneer Opportunity Fund, LP - A1 first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $1,132,740
  9. Mar 28, 2024
    Pioneer Opportunity Fund, LP - A2 first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $1,402,710
  10. Mar 28, 2024
    Pioneer Opportunity Fund, LP - A3 first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $837,155
  11. Mar 28, 2024
    Pioneer Bio Health Fund, LP first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $2,260,882
  12. Mar 28, 2024
    Pioneer Ai Fund, LP first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $4,202,214
  13. Mar 28, 2024
    Pioneer Opportunity Fund, LP - B3 first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $1,655,464
  14. Mar 28, 2024
    Pioneer Fund III (U.S.) L.P. first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $8,399,088
  15. Mar 28, 2024
    Pioneer Fund Af 24 L.P. first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $2,462,000
  16. Mar 28, 2024
    Pioneer Opportunity Fund, LP - A4 first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $1,466,981
  17. Mar 28, 2024
    Pioneer Fund B, a Series of Pioneer Fund Syndicates, LLC no longer reported on Form ADV by Pioneer Fund
  18. Mar 31, 2023
    Pioneer Fund Access Fund LP, a Series of Pioneer Master Fund LP first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $2,490,000
  19. Mar 31, 2022
    Pioneer Fund B, a Series of Pioneer Fund Syndicates, LLC first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $445,000
  20. Mar 31, 2022
    Pioneer Fund Ng, LLC, a Series of Pioneer Fund Syndicates, LLC first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $246,968
  21. Mar 31, 2022
    Pioneer Fund a, a Series of Pioneer Fund Syndicates, LLC first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $700,000
  22. Mar 31, 2021
    Pioneer Fund II (alumni) L.P. first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $2,852,100
  23. Mar 31, 2021
    Pioneer Fund II (US) L.P. first reported on Form ADV by Pioneer Fund (Venture Capital Fund), GAV $9,302,100
  24. Mar 31, 2021
    Pioneer Fund first filed Form ADV (ERA)
Classification history
  1. Sep 12, 2026
    Multi-stage venture firm (confirmed, 95%, cls-1)
    both early and growth/opportunity families, reported GAV $71M
Evidence
26 observations from 2 sources
Every observation behind this profile, with its source, date and class
FactValueEffectiveClassSource
SEC exemption claimedventure_capital_fund_adviserMar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
SEC adviser typeexempt_reporting_adviserMar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
First Form ADV filing2021-03-31Mar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Adv history loadedadv-hist-1Sep 12, 2026FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Latest Form ADV filing2024-03-28Mar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Venture share of reported funds1Mar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Business phone14156505052Mar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Description500+ Y Combinator alumni investing in the top YC startups.
meta description
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Description500+ Y Combinator alumni investing in the top YC startups.
meta description
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
HeadquartersToronto, Ontario, CanadaMar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Office address22 ST CLAIR AVE EAST SUITE 1500, Toronto, Ontario, M4T2S3Mar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Legal formCorporationMar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Portfolio pagehttps://www.pioneerfund.vc/portfolio
0 entries read
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Portfolio pagehttps://www.pioneerfund.vc/portfolio
0 entries read
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Private funds reported15Mar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Private fund gross assets (reported)$72.4MMar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Team pagehttps://www.pioneerfund.vc/team
0 name/title pairs read
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Team pagehttps://www.pioneerfund.vc/team
0 name/title pairs read
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Venture funds reported15Mar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
WebsiteHTTP://WWW.PIONEERFUND.VCMar 28, 2024FactSEC Form ADV filing data 2011 to 2024 (every filing, Schedule D 7.B.(1) private funds, Schedules A/B)
Site titlePioneer Fund
title tag
Sep 16, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)
Site titlePioneer Fund
title tag
Sep 13, 2026FactVenture organization websites (about, team, portfolio, thesis, news pages)