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The Venture Codex

Day One Ventures

2055 Turk Street, San Francisco, California, 94115, United States

Overview

Venture capital firm backing customer-obsessed companies.

Founded

2018

Deals ยท 12mo

3

Links

WebsiteLinkedInX (Twitter)

Stage focus

Seed
Series A

Geographic focus

United States

Sector focus

Business Development
Financial Services
Information Technology
Venture Capital

Investment portfolio

87rounds
NAMEDATESIZE
Tivara
Jan 2026Participated
$4 MSeed
Valar Atomics
Dec 2025Led
$130 MSeries A
Lantern
Oct 2025Participated
$3 MSeed
Filed
May 2025Participated
$17 MSeed
Durin
Apr 2025Participated
$3 MSeed
Superpower
Apr 2025Participated
$30 MSeries A
Artisan AI
Apr 2025Participated
$25 MSeries A
Epoch Biodesign
Mar 2025Participated
$19 MSeries A
Valar Atomics
Feb 2025Participated
$19 MSeed
Wordware
Nov 2024Participated
$30 MSeed
Abel
Oct 2024Led
$5 MSeed
NetNow
Sep 2024Participated
$2 MSeed
Tivara
Jan 2026Participated
$4 MSeed
Valar Atomics
Dec 2025Led
$130 MSeries A
Lantern
Oct 2025Participated
$3 MSeed
Filed
May 2025Participated
$17 MSeed
Durin
Apr 2025Participated
$3 MSeed
Superpower
Apr 2025Participated
$30 MSeries A
Artisan AI
Apr 2025Participated
$25 MSeries A
Epoch Biodesign
Mar 2025Participated
$19 MSeries A
Valar Atomics
Feb 2025Participated
$19 MSeed
Wordware
Nov 2024Participated
$30 MSeed
Abel
Oct 2024Led
$5 MSeed
NetNow
Sep 2024Participated
$2 MSeed
87
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Insights

Time horizon

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Deal Distribution

Day One Ventures: 87 funding rounds are recorded in the selected participation categories.All available history.
Day One Ventures: 87 funding rounds are recorded in the selected participation categories. All available history
Round typeLed dealsParticipated deals
Seed146
Series A120
Series B05
Series C+01
Other Equity013

Monthly Deal Activity

Day One Ventures: 87 deals are recorded across 103 months.All available history.
Day One Ventures: 87 deals are recorded across 103 months. All available history
MonthDeals
Apr '181
May '180
Jun '181
Jul '181
Aug '180
Sep '181
Oct '182
Nov '180
Dec '180
Jan '192
Feb '190
Mar '190
Apr '190
May '191
Jun '190
Jul '190
Aug '193
Sep '191
Oct '191
Nov '190
Dec '192
Jan '201
Feb '203
Mar '200
Apr '200
May '200
Jun '201
Jul '200
Aug '200
Sep '200
Oct '201
Nov '202
Dec '200
Jan '210
Feb '211
Mar '212
Apr '210
May '210
Jun '211
Jul '211
Aug '214
Sep '210
Oct '213
Nov '213
Dec '210
Jan '221
Feb '223
Mar '222
Apr '221
May '223
Jun '222
Jul '222
Aug '222
Sep '222
Oct '220
Nov '220
Dec '220
Jan '231
Feb '232
Mar '231
Apr '231
May '231
Jun '231
Jul '230
Aug '231
Sep '230
Oct '232
Nov '230
Dec '230
Jan '240
Feb '240
Mar '243
Apr '242
May '240
Jun '240
Jul '240
Aug '241
Sep '243
Oct '241
Nov '241
Dec '240
Jan '250
Feb '251
Mar '251
Apr '253
May '251
Jun '250
Jul '250
Aug '250
Sep '250
Oct '251
Nov '250
Dec '251
Jan '261
Feb '260
Mar '260
Apr '260
May '260
Jun '260
Jul '260
Aug '260
Sep '260
Oct '260

Sector Breakdown

Day One Ventures: Enterprise Software is the largest displayed sector by deal count (28 deals).All available history.

A deal can appear in multiple sectors, so sector totals may overlap. Capital represents disclosed total round sizes, not fund cheque sizes.

Day One Ventures: Enterprise Software is the largest displayed sector by deal count (28 deals). All available history
SectorDeals
Enterprise Software28
Networks, Cloud & Communication22
AI & Machine Learning19
Professional Services18
Fintech16
Marketing & Advertising11
E-Commerce & Retail10
Media & Entertainment10
Health & Life Sciences10
Education & Workforce9
Clean Energy & Sustainability7
Data, Analytics & IT7
Space & Frontier Tech6
Consumer & Lifestyle6
Hardware & Robotics6
Food & Agriculture6
Social & Community Platforms6
Transportation & Logistics4
Developer Tools4
Government & Defense3
AR/VR3
Cybersecurity & Privacy2
Real Estate & Construction2
Crypto & Blockchain2
Manufacturing2
Travel & Hospitality1
Gaming & eSports1

Deal Size Distribution

Day One Ventures: 87 rounds have a disclosed size in the displayed size bands.All available history.

Undisclosed round sizes are excluded. Capital represents total round sizes, not fund cheque sizes.

Day One Ventures: 87 rounds have a disclosed size in the displayed size bands. All available history
Round size band (USD)Deals
<$5M27
$5M-$10M21
$10M-$25M27
$25M-$50M9
$50M-$100M1
$100M-$250M2
$250M-$500M0
$500M-$1B0
$1B+0

Deals By Geography

Day One Ventures: United States has the largest recorded deal count among the displayed regions (76 deals).All available history.

Top 4 of 4 regions; European countries are grouped as Europe.

Day One Ventures: United States has the largest recorded deal count among the displayed regions (76 deals). All available history
RegionDeals
United States76
Europe8
Canada2
Australia1
Day One Ventures: 20 co-investors are shown, with Y Combinator sharing 11 recorded deals.All available history.

Co-Investors

Bubble size = shared deals

Click a bubble to open that fund in a new tab.

Shows up to 20 co-investors ranked by shared deals. Deals may be shared with multiple funds, so rows overlap. Capital is total round size, not fund cheque size.

Day One Ventures: 20 co-investors are shown, with Y Combinator sharing 11 recorded deals. All available history
Co-investorShared deals
Y Combinator11
Andreessen Horowitz8
Abstract Ventures4
Craft Ventures4
Shrug Capital4
Betaworks3
Felicis Ventures3
General Catalyst3
Google Ventures3
Initialized Capital3
Khosla Ventures3
Neo3
Precursor Ventures3
Sequoia Capital3
Soma Capital3
South Park Commons3
AB InBev2
Afore Capital2
Alpha Bridge Ventures2
Alt Capital2

Investment Strategy

Day One Ventures: Led accounts for 2% and participating for 98% of round participation.All available history.
Day One Ventures: Led accounts for 2% and participating for 98% of round participation. All available history
CategoryDeals (count)Share (%)
Led22%
Participating8598%
Day One Ventures: Single-lead accounts for 50% and co-led for 50% of lead dynamics.All available history.
Day One Ventures: Single-lead accounts for 50% and co-led for 50% of lead dynamics. All available history
CategoryDeals (count)Share (%)
Single-lead150%
Co-led150%

Team

Drake Rehfeld

Principal

Masha Bucher

Founder and General Partner

Natalie Issa

Head of Communications