Addition is a New York City-based venture capital firm founded in 2020 by Lee Fixel, the former head of Tiger Global Management's private equity business. The firm invests in founder-led, technology-enabled companies across multiple stages, allocating roughly one-third of its capital to early-stage investments and the remainder to growth-stage opportunities. Sectors of focus include software and SaaS, fintech and payments, artificial intelligence and machine learning, developer tools and infrastructure, cybersecurity, consumer, logistics, and clean energy. Typical checks range from about $10M to $200M, with a reported sweet spot near $30M-$50M. Addition operates a streamlined solo-GP model with Fixel as sole managing partner making final investment decisions, enabling fast conviction. Across Addition One through Addition Five (2020-2023) the firm raised roughly $7B-$7.3B in committed capital. Notable investments include Stripe, Snyk, Hugging Face, Chainalysis, Navan, dLocal, Delhivery, Airwallex, Freshworks, Warby Parker, and Lyra Health.
Firms are ranked by cumulative portfolio strength — how many highly-rated API companies they've backed, weighted by tier across composite quality and agent-readiness. The averages below are a secondary read on the typical company in the book.
Addition has 24 portfolio companies tracked on the APIs.io network, of which 17 (71%) publish APIs indexed here. The remaining 7 are tracked as profiles without a published API on the network.
Its highest-rated API providers on the network are Airwallex, Stripe, Stedi, Snyk, Chronosphere.
Portfolio on the Network
Portfolio companies that publish APIs indexed on APIs.io, grouped by their
API Evangelist rating. Exemplar and Strong are expanded by default.
Exemplar4Complete, well-documented, and agent-ready
aid: addition
name: Addition
description: >-
Addition is a New York City-based venture capital firm founded in 2020 by Lee
Fixel, the former head of Tiger Global Management's private equity business.
The firm invests in founder-led, technology-enabled companies across multiple
stages, allocating roughly one-third of its capital to early-stage
investments and the remainder to growth-stage opportunities. Sectors of focus
include software and SaaS, fintech and payments, artificial intelligence and
machine learning, developer tools and infrastructure, cybersecurity,
consumer, logistics, and clean energy. Typical checks range from about $10M to
$200M, with a reported sweet spot near $30M-$50M. Addition operates a
streamlined solo-GP model with Fixel as sole managing partner making final
investment decisions, enabling fast conviction. Across Addition One through
Addition Five (2020-2023) the firm raised roughly $7B-$7.3B in committed
capital. Notable investments include Stripe, Snyk, Hugging Face, Chainalysis,
Navan, dLocal, Delhivery, Airwallex, Freshworks, Warby Parker, and Lyra
Health.
x-type: venture-capital
x-category: Venture Capital
deliveryModel:
model: unknown
open_source: false
commercial: false
callable_host: false
label: Delivery model not determined — needs a product licence on record
confidence: low
source:
- none
generated: '2026-08-28'
method: derived
accessModel:
pricing: unknown
onboarding: unknown
trial: false
try_now: false
public: false
label: Unknown
confidence: low
source: []
generated: '2026-07-22'
method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/addition.png
tags:
- Venture Capital
- Early Stage
- Growth Stage
- Fintech
- Artificial Intelligence
- Developer Tools
- Software
- New York
created: '2026-07-17'
modified: '2026-07-17'
specificationVersion: '0.23'
apis: []
common:
- type: Website
url: https://addition.com
- type: Portfolio
url: https://addition.com
- type: Portfolio
url: portfolio/addition-portfolio.yml
- type: Crunchbase
url: https://www.crunchbase.com/organization/addition-7af4
- type: Team
url: team/addition-team.yml
- type: Features
data:
- 'Stage: Early stage and growth stage (multi-stage)'
- 'Typical check: ~$10M-$200M (sweet spot ~$30M-$50M)'
- 'Sectors: software/SaaS, fintech, AI/ML, developer tools, cybersecurity, consumer, logistics, clean energy'
- 'Geography: United States and global'
- 'Committed capital: ~$7B-$7.3B across five funds (2020-2023)'
- 'Founded: 2020'
- 'HQ: New York City, NY (Park Avenue Tower)'
- 'Founder / sole managing partner: Lee Fixel (ex-Tiger Global)'
sources:
- https://en.wikipedia.org/wiki/Addition_(investment_firm)
- https://www.crunchbase.com/organization/addition-7af4
- https://techcrunch.com/2023/06/14/lee-fixel-addition-fund/
updated: '2026-07-17'
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
url: https://apievangelist.com
- FN: APIs.json
url: http://apisjson.org
- FN: Addition
url: https://addition.com
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